WIP

Signed-off-by: Alejandro Mery <amery@jpi.io>

.env

@@ -0,0 +1,51 @@
+export CLOUDFLARE_DNS_API_TOKEN=wFpklBgp0Z1A4yDs5zNhlTKne3W2Si8GLwkl10Oz
+
+if [ -n "$JPICTL" ]; then
+	:
+elif JPICTL=$(which jpictl); then
+	echo 2 >&2
+elif [ -d ./cmd/jpictl ]; then
+	JPICTL="go run ./cmd/jpictl/"
+	if [ -d "$(go env GOBIN)" ]; then
+		echo 3a >&2
+	elif [ -d "$(go env GOPATH)" ]; then
+		export GOBIN="$(go env GOPATH)/bin"
+		echo 3b >&2
+	elif WS=$(x --root); then
+		export GOBIN="$WS/bin"
+		unset -v WS
+		echo 3c >&2
+	else
+		echo 3d >&2
+	fi
+elif [ -d "${WS:-}" -a -x "${WS:+$WS/bin/jpictl}" ]; then
+	JPICTL="$WS/bin/jpictl"
+	export PATH="$WS/bin:$PATH"
+	echo "4a" >&2
+else
+	for WS in \
+		"$(x --root)" \
+		"$HOME/projects/apptly" \
+		; do
+		if [ -x "$WS/bin/jpictl" ]; then
+			JPICTL="$WS/bin/jpictl"
+			export PATH="$WS/bin:$PATH"
+			echo "4b: '$WS'" >&2
+			break
+		fi
+	done
+	unset -v WS
+
+	[ -n "$JPICTL" ] || echo "4c" >&2
+fi
+
+if [ -n "$JPICTL" ]; then
+	echo "JPICTL='$JPICTL'" >&2
+
+	export JPICTL
+	jpictl() {
+		$JPICTL "$@"
+	}
+else
+	echo "JPICTL="
+fi

.gitignore

@@ -1 +1,2 @@
 .tmp
+.version

.vscode/launch.json

@@ -0,0 +1,38 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "write",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "cmd/jpictl",
+            "args": [ "write" ],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "name": "dump",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "cmd/jpictl",
+            "args": [ "dump", "-vvvv" ],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "name": "env",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "cmd/jpictl",
+            "args": [ "env", "-vvvv" ],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}
+
+    ]
+}

.vscode/settings.json

@@ -1,9 +1,15 @@
 {
     "cSpell.words": [
+        "asciigoat",
         "ceph",
+        "cyclomatic",
         "darvaza",
         "gofrs",
         "jpictl",
+        "libdns",
+        "Lookuper",
+        "publicsuffix",
+        "Wrapf",
         "zerolog"
     ]
 }

Makefile

@@ -6,19 +6,20 @@ GOFMT ?= gofmt
 GOFMT_FLAGS = -w -l -s
 GOGENERATE_FLAGS = -v
 
-GOPATH ?= $(shell $(GO) env GOPATH)
-GOBIN ?= $(GOPATH)/bin
-
 TOOLSDIR := $(CURDIR)/pkg/tools
-TMPDIR ?= .tmp
+TMPDIR ?= $(CURDIR)/.tmp
+OUTDIR ?= $(TMPDIR)
+
+GOLANGCI_LINT_VERSION ?= v1.59.1
+REVIVE_VERSION ?= v1.3.7
+
+GOLANGCI_LINT_URL ?= github.com/golangci/golangci-lint/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)
+GOLANGCI_LINT ?= $(GO) run $(GOLANGCI_LINT_URL)
 
-REVIVE ?= $(GOBIN)/revive
 REVIVE_CONF ?= $(TOOLSDIR)/revive.toml
 REVIVE_RUN_ARGS ?= -config $(REVIVE_CONF) -formatter friendly
-REVIVE_INSTALL_URL ?= github.com/mgechev/revive
+REVIVE_URL ?= github.com/mgechev/revive@$(REVIVE_VERSION)
-
+REVIVE ?= $(GO) run $(REVIVE_URL)
-GO_INSTALL_URLS = \
-	$(REVIVE_INSTALL_URL) \
 
 V = 0
 Q = $(if $(filter 1,$V),,@)
@@ -29,12 +30,13 @@ GO_BUILD_CMD = $(GO_BUILD) -o "$(OUTDIR)"
 
 all: get generate tidy build
 
-install:
-	$Q $(GO) install -v ./cmd/...
-
 clean: ; $(info $(M) cleaning…)
 	rm -rf $(TMPDIR)
 
+install: ; $(info $(M) cleaning…)
+	$Q $(GO) install -v ./cmd/...
+
+
 $(TMPDIR)/index: $(TOOLSDIR)/gen_index.sh Makefile FORCE ; $(info $(M) generating index…)
 	$Q mkdir -p $(@D)
 	$Q $< > $@~
@@ -54,6 +56,3 @@ tidy: fmt
 
 generate: ; $(info $(M) running go:generate…)
 	$Q git grep -l '^//go:generate' | sort -uV | xargs -r -n1 $(GO) generate $(GOGENERATE_FLAGS)
-
-$(REVIVE):
-	$Q $(GO) install -v $(REVIVE_INSTALL_URL)

cloud.yaml

@@ -0,0 +1,144 @@
+dir: m
+name: m
+domain: jpi.cloud
+ceph_fsid: 28180b9b-6d5d-4be0-bb5b-e4b04bf03804
+regions:
+  - name: de
+  - name: eu
+    id: 1
+    cluster: ""
+    regions:
+      - de
+      - nl
+  - name: nl
+  - name: uk
+    id: 2
+    cluster: ""
+  - name: us
+    id: 3
+    cluster: ""
+  - name: europe
+    regions:
+      - eu
+      - uk
+  - name: global
+    regions:
+      - europe
+      - us
+zones:
+  - id: 1
+    name: ssd-lon
+    regions:
+      - uk
+    machines:
+      - id: 3
+        public:
+          - 63.250.53.5
+          - 2602:ff16:7:0:1:66:0:1
+        rings:
+          - ring: 0
+            enabled: true
+            keys:
+              privatekey: WJY1yrd14c0gY4qqq1O8BPck46TVYebXrT+OoMbEqG8=
+              publickey: aDXNwapVjufcuQKfBN+waJObe1TaeeaSNl1suA0u+00=
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: 2CDO+x8HVKfw1/iqC2WkwIEQyWZsC9XPW1otqxarR0o=
+              publickey: untmMfW2W4OiMgG/6nAysoivXtDh7cZ9/rxhgJ4OlC4=
+      - id: 7
+        ceph_monitor: true
+        public:
+          - 107.155.122.3
+          - 2602:ff16:7:0:1:6d:0:1
+        rings:
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: iN4Rc3J36APlkIP/ksSpHIwAuxC/ehYLwGQ5va1AhG8=
+              publickey: XGVXDmxQajHpsgpzgrp+r/ZWxZUaodTpvGBJuLlZ0n4=
+  - id: 2
+    name: ssd-ams
+    regions:
+      - nl
+    machines:
+      - id: 3
+        public:
+          - 89.233.107.128
+          - 2602:ff16:9:0:1:1a7:0:1
+        rings:
+          - ring: 0
+            enabled: true
+            keys:
+              privatekey: oHVQY976pFH1lAhCrz9c40vR/e5PIXw7ZXv6pU6A5Ho=
+              publickey: y/Gkid2Mjxo1WO9Zi7mh+DETNYKT/AAc3K3bvr9xp3c=
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: 6I/ZMxaWUTbNc+SIGkNKxgovONqv6EAvg7NeeTRrR1c=
+              publickey: 9i0XI358OOYYoxoxV5lX8siqE8uiEwCsuWLo6LoFu0Y=
+      - id: 4
+        ceph_monitor: true
+        public:
+          - 89.233.107.251
+          - 2602:ff16:9:0:1:130:0:1
+        rings:
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: SPBd5Ka29ZecKYy7BW85rW7FO9dwKwoUHlSibybPG1s=
+              publickey: QpJupYlnJc7wc3+gAlEmbFMonsqpVnYRy7f/gnPqqBw=
+      - id: 5
+        inactive: true
+        public:
+          - 89.233.107.107
+          - 2602:ff16:9:0:1:74:0:1
+        rings:
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: mJaFvu9TBwE2i0rjhfhvpB3xZmp++3BVwa7QAvWXImY=
+              publickey: HDLVEwLv0uugyZ9C1C9ZWuiaWQ1qIqqe/DAUxYI0whM=
+  - id: 3
+    name: htz-fsn
+    regions:
+      - de
+    machines:
+      - id: 1
+        ceph_monitor: true
+        public:
+          - 157.90.209.125
+          - 2a01:4f8:252:168f::2
+        rings:
+          - ring: 0
+            enabled: true
+            keys:
+              privatekey: AMz/pCgOMVh1/2rT9uCFMox+LQgH5FrE4xUeqSs0x0M=
+              publickey: K9LYog8vtRFN4nW6dJWMQ9trmRrYuLpbu/Ze5kIiBGw=
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: 2JpA1G0Dp+sEuDhKnzToz0h76o2iLP+S7Qb9itlgXVA=
+              publickey: qWmYfgeRAQ563gWLdeYs65XjGJTSE+W8WTbpLZ0e1CQ=
+  - id: 4
+    name: ssd-nyc
+    regions:
+      - us
+    machines:
+      - id: 3
+        inactive: true
+        ceph_monitor: true
+        public:
+          - 208.87.134.41
+          - 2602:ff16:3:0:1:4fa:0:1
+        rings:
+          - ring: 0
+            enabled: true
+            keys:
+              privatekey: YNDxj+QSO3p5pXw9h7lBx0cLM0kJDv3v7BYLfc8TR3I=
+              publickey: 1UFgleUufTszPM1voIcwVhd0DpYZ1HwV05U6p3IS2DE=
+          - ring: 1
+            enabled: true
+            keys:
+              privatekey: APXGKqOxx1gOr587FSN3O3gRGpkGgSjt6zGlTu49UlU=
+              publickey: av8ni/9ZUyozabzqTjIy1sOnSJuQ9p63Tu9ECVmHB2I=

cmd/jpictl/config.go

@@ -12,6 +12,14 @@ const (
 	// DefaultConfigFile is read if -f/--config-file isn't specified.
 	// If it doesn't exist, m/ will be scanned
 	DefaultConfigFile = "cloud.yaml"
+
+	// DefaultClusterDir is the directory we will scan and write
+	// unless something else is indicated
+	DefaultClusterDir = "m"
+
+	// DefaultDomain indicates the domain to use unless
+	// something else is specified
+	DefaultDomain = "jpi.cloud"
 )
 
 // Config describes the repository
@@ -22,27 +30,34 @@ type Config struct {
 	ConfigFile string
 }
 
+var forceScan bool
+
 var cfg = &Config{
-	Base:   "m",
+	Base:   DefaultClusterDir,
-	Domain: "jpi.cloud",
+	Domain: DefaultDomain,
 }
 
 // LoadZones loads all zones and machines in the config directory
 // or file
 func (cfg *Config) LoadZones(resolve bool) (*cluster.Cluster, error) {
-	// try config file first
+	var zones *cluster.Cluster
-	zones, err := cluster.NewFromConfig(cfg.ConfigFile,
+	var err error
-		cluster.ResolvePublicAddresses(resolve),
-		cluster.WithLogger(log),
-	)
 
-	switch {
+	if !forceScan {
-	case err == nil:
+		// try config file first
-		// file was good
+		zones, err = cluster.NewFromConfig(cfg.ConfigFile,
-		return zones, nil
+			cluster.ResolvePublicAddresses(resolve),
-	case !os.IsNotExist(err) || cfg.ConfigFile != DefaultConfigFile:
+			cluster.WithLogger(log),
-		// file was bad
+		)
-		return nil, core.Wrapf(err, "NewFromConfig(%q)", cfg.ConfigFile)
+
+		switch {
+		case err == nil:
+			// file was good
+			return zones, nil
+		case !os.IsNotExist(err) || cfg.ConfigFile != DefaultConfigFile:
+			// file was bad
+			return nil, core.Wrap(err, "NewFromConfig(%q)", cfg.ConfigFile)
+		}
 	}
 
 	// default file doesn't exist. scan instead.
@@ -53,7 +68,15 @@ func (cfg *Config) LoadZones(resolve bool) (*cluster.Cluster, error) {
 }
 
 func init() {
-	rootCmd.PersistentFlags().
+	flags := rootCmd.PersistentFlags()
-		StringVarP(&cfg.ConfigFile, "config-file", "f",
+
-			DefaultConfigFile, "config file (JSON or YAML)")
+	flags.StringVarP(&cfg.Base, "scan-dir", "d",
+		DefaultClusterDir, "directory to scan for cluster data")
+	flags.StringVarP(&cfg.Domain, "domain", "D",
+		DefaultDomain, "domain to use for scanned data")
+	flags.StringVarP(&cfg.ConfigFile, "config-file", "f",
+		DefaultConfigFile, "config file (JSON or YAML)")
+
+	flags.BoolVarP(&forceScan, "force-scan", "S",
+		false, "ignore config file and scan the directory instead")
 }

cmd/jpictl/dns.go

@@ -0,0 +1,193 @@
+package main
+
+import (
+	"context"
+	"net/netip"
+	"os"
+	"time"
+
+	"darvaza.org/core"
+	"github.com/spf13/cobra"
+
+	"git.jpi.io/amery/jpictl/pkg/cluster"
+	"git.jpi.io/amery/jpictl/pkg/dns"
+)
+
+const (
+	// DNSSyncTimeout specifies how long are we willing to wait for a DNS
+	// synchronization
+	DNSSyncTimeout = 10 * time.Second
+)
+
+func newDNSManager(m *cluster.Cluster, provider dns.Provider) (*dns.Manager, error) {
+	domain := m.Domain
+	if m.Name != "" {
+		domain = m.Name + "." + domain
+	}
+
+	mgr, err := dns.NewManager(dns.WithDomain(domain), dns.WithLogger(log))
+	if err != nil {
+		return nil, err
+	}
+
+	if provider != nil {
+		// set provider only  if specified
+		err = dns.WithProvider(provider)(mgr)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if err := populateDNSManager(mgr, m); err != nil {
+		return nil, err
+	}
+
+	return mgr, nil
+}
+
+func populateDNSManager(mgr *dns.Manager, m *cluster.Cluster) error {
+	var err error
+
+	ctx := context.TODO()
+
+	m.ForEachZone(func(z *cluster.Zone) bool {
+		z.ForEachMachine(func(p *cluster.Machine) bool {
+			err = mgr.AddHost(ctx, z.Name, int(p.ID), p.IsActive(), p.PublicAddresses...)
+			return err != nil
+		})
+
+		return err != nil
+	})
+	if err != nil {
+		return err
+	}
+
+	m.ForEachRegion(func(r *cluster.Region) bool {
+		r.ForEachZone(func(z *cluster.Zone) bool {
+			err = mgr.AddRegion(ctx, r.Name, z.Name)
+			return err != nil
+		})
+
+		return err != nil
+	})
+
+	return err
+}
+
+// revive:disable:flag-parameter
+func newDNSManagerCommand(_ *cobra.Command,
+	resolve bool, withCredentials bool) (*dns.Manager, error) {
+	// revive:enable:flag-parameter
+	var cred dns.Provider
+
+	if withCredentials {
+		var err error
+
+		cred, err = dns.DefaultDNSProvider()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	m, err := cfg.LoadZones(resolve)
+	if err != nil {
+		return nil, err
+	}
+
+	return newDNSManager(m, cred)
+}
+
+// Command
+var dnsCmd = &cobra.Command{
+	Use: "dns",
+}
+
+var dnsWriteCmd = &cobra.Command{
+	Use:    "write",
+	Short:  "dns write generates public DNS records",
+	PreRun: setVerbosity,
+	RunE: func(cmd *cobra.Command, _ []string) error {
+		mgr, err := newDNSManagerCommand(cmd, true, false)
+		if err != nil {
+			return err
+		}
+
+		_, err = mgr.WriteTo(os.Stdout)
+		return err
+	},
+}
+
+var dnsSyncCmd = &cobra.Command{
+	Use:    "sync",
+	Short:  "dns sync updates public DNS records",
+	PreRun: setVerbosity,
+	RunE: func(cmd *cobra.Command, _ []string) error {
+		mgr, err := newDNSManagerCommand(cmd, true, true)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), DNSSyncTimeout)
+		defer cancel()
+
+		return mgr.Sync(ctx)
+	},
+}
+
+var dnsShowCmd = &cobra.Command{
+	Use:    "show [<name>...]",
+	Short:  "dns show lists entries on DNS for our domain",
+	PreRun: setVerbosity,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		mgr, err := newDNSManagerCommand(cmd, true, true)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), DNSSyncTimeout)
+		defer cancel()
+
+		return mgr.Show(ctx, args...)
+	},
+}
+
+var dnsAddCmd = &cobra.Command{
+	Use:    "add <name> <address..>",
+	Short:  "dns add registers a new machine on the public DNS",
+	Args:   cobra.MinimumNArgs(2),
+	PreRun: setVerbosity,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		var addrs []netip.Addr
+
+		for _, s := range args[1:] {
+			addr, err := core.ParseAddr(s)
+			switch {
+			case err != nil:
+				return core.Wrap(err, s)
+			case !addr.IsValid(), addr.IsUnspecified(), addr.IsPrivate(), addr.IsMulticast():
+				return core.Wrap(core.ErrInvalid, s)
+			default:
+				addrs = append(addrs, addr)
+			}
+		}
+
+		mgr, err := newDNSManagerCommand(cmd, true, true)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), DNSSyncTimeout)
+		defer cancel()
+
+		return mgr.Add(ctx, args[0], addrs...)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(dnsCmd)
+
+	dnsCmd.AddCommand(dnsWriteCmd)
+	dnsCmd.AddCommand(dnsSyncCmd)
+	dnsCmd.AddCommand(dnsShowCmd)
+	dnsCmd.AddCommand(dnsAddCmd)
+}

cmd/jpictl/gateway.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"os"
-	"strconv"
 	"strings"
 
 	"github.com/spf13/cobra"
@@ -44,7 +43,7 @@ func gatewaySet(zi cluster.ZoneIterator, gw string) error {
 	zi.ForEachZone(func(z *cluster.Zone) bool {
 		for _, m := range z.Machines {
 			if m.Name == gw {
-				z.SetGateway(m.ID, true)
+				_ = z.SetGateway(m.ID, true)
 				return true
 			}
 		}
@@ -80,8 +79,8 @@ func gatewayUnset(zi cluster.ZoneIterator, ngw string) error {
 	zi.ForEachZone(func(z *cluster.Zone) bool {
 		for _, m := range z.Machines {
 			if m.Name == ngw && m.IsGateway() {
-				z.SetGateway(m.ID, false)
+				_ = z.SetGateway(m.ID, false)
-				m.RemoveWireguardConfig(0)
+				_ = m.RemoveWireguardConfig(0)
 				return true
 			}
 		}
@@ -128,7 +127,7 @@ func gatewayListAll(zi cluster.ZoneIterator) error {
 			return false
 		}
 		for _, i := range ids {
-			sIDs = append(sIDs, strconv.Itoa(i))
+			sIDs = append(sIDs, i.String())
 		}
 		b.WriteString(strings.Join(sIDs, ", "))
 		b.WriteString("\n")

cmd/jpictl/list.go

@@ -0,0 +1,200 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"net/netip"
+	"os"
+
+	"darvaza.org/core"
+	"github.com/spf13/cobra"
+
+	"git.jpi.io/amery/jpictl/pkg/cluster"
+	"git.jpi.io/amery/jpictl/pkg/rings"
+	"git.jpi.io/amery/jpictl/pkg/tools"
+)
+
+type inventory struct {
+	r []*cluster.Region
+	z [][]*cluster.Zone
+}
+
+func (g *inventory) renderRingZero(out *tools.LazyBuffer) error {
+	ring0 := netip.PrefixFrom(rings.UnsafeRingZeroAddress(0, 0, 0), rings.RingZeroBits)
+	from, to, _ := rings.PrefixToRange(ring0)
+
+	_ = out.Printf("; wg%v\n", 0)
+	_ = out.Printf("%s\t%s-%s\n", ring0, from, to)
+
+	if err := g.renderRingZeroRegions(out); err != nil {
+		return err
+	}
+
+	return g.renderRingZeroZones(out)
+}
+
+func (g *inventory) renderRingZeroRegions(out *tools.LazyBuffer) error {
+	for _, r := range g.r {
+		if err := g.renderRingZeroRegion(out, r); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (*inventory) renderRingZeroRegion(out *tools.LazyBuffer, r *cluster.Region) error {
+	addr := rings.UnsafeRingZeroAddress(r.ID, 0, 0)
+	ring0r := netip.PrefixFrom(addr, rings.RingZeroBits+4)
+	from, to, _ := rings.PrefixToRange(ring0r)
+
+	_ = out.Printf("%s\t%s-%s\t# %s\n", ring0r, from, to, r.Name)
+	return nil
+}
+
+func (g *inventory) renderRingZeroZones(out *tools.LazyBuffer) error {
+	for i, r := range g.r {
+		for _, z := range g.z[i] {
+			if err := g.renderRingZeroZone(out, r, z); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+func (*inventory) renderRingZeroZone(out *tools.LazyBuffer, r *cluster.Region, z *cluster.Zone) error {
+	addr := rings.UnsafeRingZeroAddress(r.ID, z.ID, 0)
+	ring0rz := netip.PrefixFrom(addr, rings.RingZeroBits+4+4)
+	from, to, _ := rings.PrefixToRange(ring0rz)
+
+	_ = out.Printf("; wg%v: %s (%s)\n", 0, z.Name, r.Name)
+	_ = out.Printf("%s\t%s-%s\t%s\n", ring0rz, from, to, z.Name)
+
+	z.ForEachMachine(func(m *cluster.Machine) bool {
+		if m.IsGateway() {
+			addr, _ := m.RingZeroAddress()
+			cidr := netip.PrefixFrom(addr, 32)
+			_ = out.Printf("%s\t\t%s-%v\n", cidr, m.Name, 0)
+		}
+
+		return false
+	})
+
+	return nil
+}
+
+func (g *inventory) renderRingOne(out *tools.LazyBuffer) error {
+	for i, r := range g.r {
+		for _, z := range g.z[i] {
+			if err := g.renderRingOneZone(out, r, z); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (*inventory) renderRingOneZone(out *tools.LazyBuffer, r *cluster.Region, z *cluster.Zone) error {
+	ring1, err := rings.RingOnePrefix(r.ID, z.ID)
+	if err != nil {
+		return err
+	}
+
+	from, to, _ := rings.PrefixToRange(ring1)
+
+	_ = out.Printf("; wg%v: %s (%s)\n", 1, z.Name, r.Name)
+	_ = out.Printf("%s\t%s-%s\t%s\n", ring1, from, to, z.Name)
+
+	z.ForEachMachine(func(m *cluster.Machine) bool {
+		addr := m.RingOneAddress()
+		cidr := netip.PrefixFrom(addr, 32)
+		_ = out.Printf("%s\t\t%s-%v\n", cidr, m.Name, 1)
+		return false
+	})
+	return nil
+}
+
+func (g *inventory) Marshal() ([]byte, error) {
+	var buf tools.LazyBuffer
+
+	if err := g.renderRingZero(&buf); err != nil {
+		return nil, err
+	}
+
+	if err := g.renderRingOne(&buf); err != nil {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}
+
+func (g *inventory) WriteTo(out io.Writer) (int64, error) {
+	b, err := g.Marshal()
+	if err != nil {
+		return 0, err
+	}
+
+	buf := bytes.NewBuffer(b)
+	return buf.WriteTo(out)
+}
+
+func genInventory(m *cluster.Cluster) (*inventory, error) {
+	g := new(inventory)
+
+	g.populateRegions(m)
+	g.populateZones()
+
+	return g, nil
+}
+
+func (g *inventory) populateRegions(m *cluster.Cluster) {
+	m.ForEachRegion(func(r *cluster.Region) bool {
+		if r.IsPrimary() {
+			g.r = append(g.r, r)
+		}
+		return false
+	})
+
+	core.SliceSortFn(g.r, func(a, b *cluster.Region) bool {
+		return a.ID < b.ID
+	})
+}
+
+func (g *inventory) populateZones() {
+	g.z = make([][]*cluster.Zone, len(g.r))
+	for i, r := range g.r {
+		r.ForEachZone(func(z *cluster.Zone) bool {
+			g.z[i] = append(g.z[i], z)
+			return false
+		})
+
+		core.SliceSortFn(g.z[i], func(a, b *cluster.Zone) bool {
+			return a.ID < b.ID
+		})
+	}
+}
+
+// Command
+var listCmd = &cobra.Command{
+	Use:    "list",
+	Short:  "list shows the IP/CIDR inventory",
+	PreRun: setVerbosity,
+	RunE: func(_ *cobra.Command, _ []string) error {
+		m, err := cfg.LoadZones(false)
+		if err != nil {
+			return err
+		}
+
+		out, err := genInventory(m)
+		if err != nil {
+			return err
+		}
+
+		_, err = out.WriteTo(os.Stdout)
+		return err
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(listCmd)
+}

cmd/jpictl/log.go

@@ -3,9 +3,13 @@ package main
 import (
 	"fmt"
 
+	"darvaza.org/sidecar/pkg/logger/zerolog"
 	"darvaza.org/slog"
+	"github.com/spf13/cobra"
 )
 
+var log = zerolog.New(nil, slog.Error)
+
 // fatal is a convenience wrapper for slog.Logger.Fatal().Print()
 func fatal(err error, msg string, args ...any) {
 	l := log.Fatal()
@@ -19,3 +23,20 @@ func fatal(err error, msg string, args ...any) {
 
 	panic("unreachable")
 }
+
+var verbosity int
+
+// setVerbosity replaces the global logger using the
+// verbosity level specified via -v flags
+func setVerbosity(_ *cobra.Command, _ []string) {
+	desired := int8(slog.Error) + int8(verbosity)
+	if desired > 6 {
+		desired = 6
+	}
+	log = zerolog.New(nil, slog.LogLevel(desired))
+}
+
+func init() {
+	rootCmd.PersistentFlags().CountVarP(&verbosity, "verbosity", "v",
+		"increase the verbosity level to Warn, Info or Debug")
+}

cmd/jpictl/main.go

@@ -2,8 +2,8 @@
 package main
 
 import (
-	"darvaza.org/sidecar/pkg/logger/zerolog"
+	_ "embed"
-	"darvaza.org/slog"
+
 	"github.com/spf13/cobra"
 )
 
@@ -13,11 +13,10 @@ const (
 )
 
 var (
-	log       = zerolog.New(nil, slog.Error)
+	rootCmd = &cobra.Command{
-	verbosity int
+		Use:     CmdName,
-	rootCmd   = &cobra.Command{
+		Short:   "control tool for jpi.cloud",
-		Use:   CmdName,
+		Version: version,
-		Short: "control tool for jpi.cloud",
 	}
 )
 
@@ -26,16 +25,3 @@ func main() {
 		fatal(err, "")
 	}
 }
-
-func init() {
-	rootCmd.PersistentFlags().CountVarP(&verbosity, "verbosity", "v",
-		"increase the verbosity level to Warn, Info or Debug")
-}
-
-func setVerbosity(_ *cobra.Command, _ []string) {
-	desired := int8(slog.Error) + int8(verbosity)
-	if desired > 6 {
-		desired = 6
-	}
-	log = log.WithLevel(slog.LogLevel(desired))
-}

cmd/jpictl/version.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	_ "embed"
+
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+//go:generate sh -c "git describe | tr -d '\r\n' > .version"
+//go:embed .version
+var version string
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Returns jpictl's version",
+	Args:  cobra.NoArgs,
+	Run: func(_ *cobra.Command, _ []string) {
+		_, _ = fmt.Fprintf(os.Stdout, "%s\n", version)
+	},
+}
+
+func init() {
+	if version == "" {
+		version = "undetermined"
+	}
+
+	rootCmd.AddCommand(versionCmd)
+}

go.mod

@@ -1,47 +1,43 @@
 module git.jpi.io/amery/jpictl
 
-go 1.19
+go 1.21
 
 require (
+	asciigoat.org/core v0.3.9 // indirect
 	asciigoat.org/ini v0.2.5
-	darvaza.org/core v0.9.8
+	darvaza.org/cache/x/simplelru v0.1.8 // indirect
-	darvaza.org/resolver v0.5.4
+	darvaza.org/core v0.14.2
-	darvaza.org/sidecar v0.0.2
+	darvaza.org/resolver v0.9.2
-	darvaza.org/slog v0.5.3
+	darvaza.org/sidecar v0.4.0
-	darvaza.org/slog/handlers/discard v0.4.5
+	darvaza.org/slog v0.5.7
-	github.com/gofrs/uuid/v5 v5.0.0
+	darvaza.org/slog/handlers/discard v0.4.11
+	darvaza.org/slog/handlers/filter v0.4.9 // indirect
+	darvaza.org/slog/handlers/zerolog v0.4.9 // indirect
+)
+
+require (
+	github.com/gofrs/uuid/v5 v5.2.0
 	github.com/hack-pad/hackpadfs v0.2.1
-	github.com/mgechev/revive v1.3.3
+	github.com/libdns/cloudflare v0.1.1
-	github.com/spf13/cobra v1.7.0
+	github.com/libdns/libdns v0.2.2
-	golang.org/x/crypto v0.12.0
+	github.com/spf13/cobra v1.8.0
-	gopkg.in/gcfg.v1 v1.2.3
+	golang.org/x/crypto v0.25.0
+	golang.org/x/net v0.27.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
-	asciigoat.org/core v0.3.9 // indirect
-	darvaza.org/slog/handlers/filter v0.4.5 // indirect
-	darvaza.org/slog/handlers/zerolog v0.4.5 // indirect
-	github.com/BurntSushi/toml v1.3.2 // indirect
-	github.com/chavacava/garif v0.1.0 // indirect
-	github.com/fatih/color v1.15.0 // indirect
-	github.com/fatih/structtag v1.2.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/miekg/dns v1.1.59 // indirect
-	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
-	github.com/miekg/dns v1.1.55 // indirect
+	github.com/rs/zerolog v1.33.0 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/olekukonko/tablewriter v0.0.5 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/rivo/uniseg v0.4.4 // indirect
-	github.com/rs/zerolog v1.30.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/mod v0.17.0 // indirect
-	golang.org/x/net v0.14.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
-	golang.org/x/tools v0.12.0 // indirect
+	golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect
-	gopkg.in/warnings.v0 v0.1.2 // indirect
 )

go.sum

@@ -2,106 +2,80 @@ asciigoat.org/core v0.3.9 h1:hgDDz4ecm3ZvehX++m8A/IzAt+B5oDPiRtxatzfUHPQ=
 asciigoat.org/core v0.3.9/go.mod h1:CAaHwyw8MpAq4a1MYtN2dxJrsK+hmIdW50OndaQZYPI=
 asciigoat.org/ini v0.2.5 h1:4gRIp9rU+XQt8+HMqZO5R7GavMv9Yl2+N+je6djDIAE=
 asciigoat.org/ini v0.2.5/go.mod h1:gmXzJ9XFqf1NLk5nQkj04USQ4tMtdRJHNQX6vp3DzjU=
-darvaza.org/core v0.9.8 h1:luLxgfUc2pzuusYPo/Z/dC/qr9XZPKpSQw8/kS7zNUM=
+darvaza.org/cache/x/simplelru v0.1.8 h1:rvFucut4wKYbsYc994yR3P0M08NqlsvZxr5G4QK82tw=
-darvaza.org/core v0.9.8/go.mod h1:Dbme64naxeshQfxcVJX9ZT7AiGyIY8kldfuELVtf8mw=
+darvaza.org/cache/x/simplelru v0.1.8/go.mod h1:Mv1isOJTcXYK+aK0AvUe+/3KpRTXDsYga6rdTS/upNs=
-darvaza.org/resolver v0.5.4 h1:dlSBNV14yYsp7Kg7ipwYOMNsLbrpeXa8Z0HBTa0Ryxs=
+darvaza.org/core v0.14.2 h1:6p0iznuGfVGbBp+CnkZTw1b76j6Q/j4ffDztZXrrlK8=
-darvaza.org/resolver v0.5.4/go.mod h1:vHMkQUmHjaetFqG2ZLZJiQHsXEMGoTOFGm+NXwfndhE=
+darvaza.org/core v0.14.2/go.mod h1:C+B0GRNLB+/asGfxjQ9XZERdk7xaFxzt5xTIBPiNm2M=
-darvaza.org/sidecar v0.0.2 h1:4H8FUxc43kkLjxdShN1CoxLTcoHQsZjDVwm7kt6eIK0=
+darvaza.org/resolver v0.9.2 h1:sUX6LZ1eN5TzJW7L4m7HM+BvwBeWl8dYYDGVSe+AIhk=
-darvaza.org/sidecar v0.0.2/go.mod h1:yFC3Qt3j+uS7n9CMpLxwrA68z+FNJhENoenBc9zBJJo=
+darvaza.org/resolver v0.9.2/go.mod h1:XWqPhrxoOKNzRuSozOwmE1M6QVqQL28jEdxylnIO8Nw=
-darvaza.org/slog v0.5.3 h1:sQzmZXgqRh9oFMKBwEYrEpucLvKJVZxaxa2bHIA6GJ0=
+darvaza.org/sidecar v0.4.0 h1:wHghxzLsiT82WDBBUf34aTqtOvRBg4UbxVIJgKNXRVA=
-darvaza.org/slog v0.5.3/go.mod h1:59d+yi+C7gn4pDDuwbbOKawERpdXthFFk1Yc+Sv6XB0=
+darvaza.org/sidecar v0.4.0/go.mod h1:fUzjcFM4rN3bSEl4BKvok3MLpZWEhEa9+0/egmtpfMY=
-darvaza.org/slog/handlers/discard v0.4.5 h1:RRykOItNolHyiUav57lG/GFBL33rcljoa0nWTpY+T0g=
+darvaza.org/slog v0.5.7 h1:JWC0OqvzR435AidIRDp4T9kdWTURWkUjzP4R78Koq1Q=
-darvaza.org/slog/handlers/discard v0.4.5/go.mod h1:HYHfISQjMqcPbPoPZ92ib/u7s9JcXvF6OaygpPFwdF8=
+darvaza.org/slog v0.5.7/go.mod h1:12L03t+KYhsZ9IbfF+8if5w9Y91af2par+bSzeBVqIQ=
-darvaza.org/slog/handlers/filter v0.4.5 h1:CX1bMzldd67e3y3s3Sh4jK8Lyo0WMvTGBB2lD315jhc=
+darvaza.org/slog/handlers/discard v0.4.11 h1:wr34OnDoRaMV1eGgW7yUaupQxjkTnuHrJmYRPj64RHM=
-darvaza.org/slog/handlers/filter v0.4.5/go.mod h1:OuH9rHYg9CIErTJCZliMnFexBfP/HJ9PZ1V1VwSCZ1g=
+darvaza.org/slog/handlers/discard v0.4.11/go.mod h1:ynxyLmZzZ5mP4ACLhQs4MEuDyhkIzjz6DfBHUjhnIK4=
-darvaza.org/slog/handlers/zerolog v0.4.5 h1:W4cgGORx4wImr+RL96CWSQGTdkZzKX6YHXPSYJvdoB4=
+darvaza.org/slog/handlers/filter v0.4.9 h1:xD8OBwlJytpiwTSDDZqUuNSOsJuaManXQiOj9WEStr8=
-darvaza.org/slog/handlers/zerolog v0.4.5/go.mod h1:mCoh/mIl8Nsa6Yu1Um7d7cos6RuEJzgaTXaX5LDRUao=
+darvaza.org/slog/handlers/filter v0.4.9/go.mod h1:t+sjcf1c46kAdf1TRiQmop91xlkteZrC4WDXoVwHgP8=
-github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
+darvaza.org/slog/handlers/zerolog v0.4.9 h1:08FjRnwRGtJsLLBnbgxVorb/bkgm5QEM/LXD2cxeCbM=
-github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+darvaza.org/slog/handlers/zerolog v0.4.9/go.mod h1:PZYfx6eOxQfD+cXJQp52iwKgcD30QVYHoXxOCojAOdw=
-github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
-github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
-github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBDUSsw=
-github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
-github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/gofrs/uuid/v5 v5.0.0 h1:p544++a97kEL+svbcFbCQVM9KFu0Yo25UoISXGNNH9M=
+github.com/gofrs/uuid/v5 v5.2.0 h1:qw1GMx6/y8vhVsx626ImfKMuS5CvJmhIKKtuyvfajMM=
-github.com/gofrs/uuid/v5 v5.0.0/go.mod h1:CDOjlDMVAtN56jqyRUZh58JT31Tiw7/oQyEXZV+9bD8=
+github.com/gofrs/uuid/v5 v5.2.0/go.mod h1:CDOjlDMVAtN56jqyRUZh58JT31Tiw7/oQyEXZV+9bD8=
 github.com/hack-pad/hackpadfs v0.2.1 h1:FelFhIhv26gyjujoA/yeFO+6YGlqzmc9la/6iKMIxMw=
 github.com/hack-pad/hackpadfs v0.2.1/go.mod h1:khQBuCEwGXWakkmq8ZiFUvUZz84ZkJ2KNwKvChs4OrU=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/libdns/cloudflare v0.1.1 h1:FVPfWwP8zZCqj268LZjmkDleXlHPlFU9KC4OJ3yn054=
+github.com/libdns/cloudflare v0.1.1/go.mod h1:9VK91idpOjg6v7/WbjkEW49bSCxj00ALesIFDhJ8PBU=
+github.com/libdns/libdns v0.2.2 h1:O6ws7bAfRPaBsgAYt8MDe2HcNBGC29hkZ9MX2eUSX3s=
+github.com/libdns/libdns v0.2.2/go.mod h1:4Bj9+5CQiNMVGf87wjX4CY3HQJypUHRuLvlsfsZqLWQ=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
-github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
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jpictl.code-workspace

@@ -0,0 +1,14 @@
+{
+	"folders": [
+		{
+			"path": "."
+		},
+		{
+			"path": "../../../bitbucket.org/jpi/m.jpi.cloud"
+		},
+		{
+			"path": "../../../darvaza.org/core"
+		}
+	],
+	"settings": {}
+}

m/ceph.conf

@@ -0,0 +1,8 @@
+[global]
+fsid = 28180b9b-6d5d-4be0-bb5b-e4b04bf03804
+mon_initial_members = ssd-lon-7, ssd-ams-4, htz-fsn-1, ssd-nyc-3
+mon_host = 10.2.16.7, 10.1.32.4, 10.1.48.1, 10.3.64.3
+cluster_network = 10.0.0.0/8
+
+; don't rewrite labels on startup
+osd_class_update_on_start = false

m/eu/regions

@@ -0,0 +1,2 @@
+de
+nl

m/europe/regions

@@ -0,0 +1,2 @@
+eu
+uk

m/global/regions

@@ -0,0 +1,2 @@
+europe
+us

m/htz-fsn/htz-fsn-1/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s ceph k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/htz-fsn/htz-fsn-1/wg0.conf

@@ -0,0 +1,23 @@
+[Interface]
+# Name: htz-fsn-1-0
+Address = 10.0.19.1
+PrivateKey = AMz/pCgOMVh1/2rT9uCFMox+LQgH5FrE4xUeqSs0x0M=
+ListenPort = 51800
+
+[Peer]
+# Name: ssd-lon-3-0
+PublicKey = aDXNwapVjufcuQKfBN+waJObe1TaeeaSNl1suA0u+00=
+Endpoint = ssd-lon-3.m.jpi.cloud:51800
+AllowedIPs = 10.2.16.0/20, 10.0.33.3/32
+
+[Peer]
+# Name: ssd-ams-3-0
+PublicKey = y/Gkid2Mjxo1WO9Zi7mh+DETNYKT/AAc3K3bvr9xp3c=
+Endpoint = ssd-ams-3.m.jpi.cloud:51800
+AllowedIPs = 10.1.32.0/20, 10.0.18.3/32
+
+[Peer]
+# Name: ssd-nyc-3-0
+PublicKey = 1UFgleUufTszPM1voIcwVhd0DpYZ1HwV05U6p3IS2DE=
+Endpoint = ssd-nyc-3.m.jpi.cloud:51800
+AllowedIPs = 10.3.64.0/20, 10.0.52.3/32

m/htz-fsn/htz-fsn-1/wg0.key

@@ -0,0 +1 @@
+AMz/pCgOMVh1/2rT9uCFMox+LQgH5FrE4xUeqSs0x0M=

m/htz-fsn/htz-fsn-1/wg0.pub

@@ -0,0 +1 @@
+K9LYog8vtRFN4nW6dJWMQ9trmRrYuLpbu/Ze5kIiBGw=

m/htz-fsn/htz-fsn-1/wg1.conf

@@ -0,0 +1,5 @@
+[Interface]
+# Name: htz-fsn-1-1
+Address = 10.1.48.1
+PrivateKey = 2JpA1G0Dp+sEuDhKnzToz0h76o2iLP+S7Qb9itlgXVA=
+ListenPort = 51810

m/htz-fsn/htz-fsn-1/wg1.key

@@ -0,0 +1 @@
+2JpA1G0Dp+sEuDhKnzToz0h76o2iLP+S7Qb9itlgXVA=

m/htz-fsn/htz-fsn-1/wg1.pub

@@ -0,0 +1 @@
+qWmYfgeRAQ563gWLdeYs65XjGJTSE+W8WTbpLZ0e1CQ=

m/htz-fsn/regions

@@ -0,0 +1 @@
+de

m/ssd-ams/regions

@@ -0,0 +1 @@
+nl

m/ssd-ams/ssd-ams-3/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s ceph k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-ams/ssd-ams-3/wg0.conf

@@ -0,0 +1,23 @@
+[Interface]
+# Name: ssd-ams-3-0
+Address = 10.0.18.3
+PrivateKey = oHVQY976pFH1lAhCrz9c40vR/e5PIXw7ZXv6pU6A5Ho=
+ListenPort = 51800
+
+[Peer]
+# Name: ssd-lon-3-0
+PublicKey = aDXNwapVjufcuQKfBN+waJObe1TaeeaSNl1suA0u+00=
+Endpoint = ssd-lon-3.m.jpi.cloud:51800
+AllowedIPs = 10.2.16.0/20, 10.0.33.3/32
+
+[Peer]
+# Name: htz-fsn-1-0
+PublicKey = K9LYog8vtRFN4nW6dJWMQ9trmRrYuLpbu/Ze5kIiBGw=
+Endpoint = htz-fsn-1.m.jpi.cloud:51800
+AllowedIPs = 10.1.48.0/20, 10.0.19.1/32
+
+[Peer]
+# Name: ssd-nyc-3-0
+PublicKey = 1UFgleUufTszPM1voIcwVhd0DpYZ1HwV05U6p3IS2DE=
+Endpoint = ssd-nyc-3.m.jpi.cloud:51800
+AllowedIPs = 10.3.64.0/20, 10.0.52.3/32

m/ssd-ams/ssd-ams-3/wg0.key

@@ -0,0 +1 @@
+oHVQY976pFH1lAhCrz9c40vR/e5PIXw7ZXv6pU6A5Ho=

m/ssd-ams/ssd-ams-3/wg0.pub

@@ -0,0 +1 @@
+y/Gkid2Mjxo1WO9Zi7mh+DETNYKT/AAc3K3bvr9xp3c=

m/ssd-ams/ssd-ams-3/wg1.conf

@@ -0,0 +1,17 @@
+[Interface]
+# Name: ssd-ams-3-1
+Address = 10.1.32.3
+PrivateKey = 6I/ZMxaWUTbNc+SIGkNKxgovONqv6EAvg7NeeTRrR1c=
+ListenPort = 51810
+
+[Peer]
+# Name: ssd-ams-4-1
+PublicKey = QpJupYlnJc7wc3+gAlEmbFMonsqpVnYRy7f/gnPqqBw=
+Endpoint = ssd-ams-4.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.4/32
+
+[Peer]
+# Name: ssd-ams-5-1
+PublicKey = HDLVEwLv0uugyZ9C1C9ZWuiaWQ1qIqqe/DAUxYI0whM=
+Endpoint = ssd-ams-5.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.5/32

m/ssd-ams/ssd-ams-3/wg1.key

@@ -0,0 +1 @@
+6I/ZMxaWUTbNc+SIGkNKxgovONqv6EAvg7NeeTRrR1c=

m/ssd-ams/ssd-ams-3/wg1.pub

@@ -0,0 +1 @@
+9i0XI358OOYYoxoxV5lX8siqE8uiEwCsuWLo6LoFu0Y=

m/ssd-ams/ssd-ams-4/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s ceph k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-ams/ssd-ams-4/wg1.conf

@@ -0,0 +1,17 @@
+[Interface]
+# Name: ssd-ams-4-1
+Address = 10.1.32.4
+PrivateKey = SPBd5Ka29ZecKYy7BW85rW7FO9dwKwoUHlSibybPG1s=
+ListenPort = 51810
+
+[Peer]
+# Name: ssd-ams-3-1
+PublicKey = 9i0XI358OOYYoxoxV5lX8siqE8uiEwCsuWLo6LoFu0Y=
+Endpoint = ssd-ams-3.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.3/32, 10.2.16.0/20, 10.1.48.0/20, 10.3.64.0/20, 10.0.33.3/32, 10.0.18.3/32, 10.0.19.1/32, 10.0.52.3/32
+
+[Peer]
+# Name: ssd-ams-5-1
+PublicKey = HDLVEwLv0uugyZ9C1C9ZWuiaWQ1qIqqe/DAUxYI0whM=
+Endpoint = ssd-ams-5.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.5/32

m/ssd-ams/ssd-ams-4/wg1.key

@@ -0,0 +1 @@
+SPBd5Ka29ZecKYy7BW85rW7FO9dwKwoUHlSibybPG1s=

m/ssd-ams/ssd-ams-4/wg1.pub

@@ -0,0 +1 @@
+QpJupYlnJc7wc3+gAlEmbFMonsqpVnYRy7f/gnPqqBw=

m/ssd-ams/ssd-ams-5/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s ceph k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-ams/ssd-ams-5/region

@@ -0,0 +1 @@
+none

m/ssd-ams/ssd-ams-5/wg1.conf

@@ -0,0 +1,17 @@
+[Interface]
+# Name: ssd-ams-5-1
+Address = 10.1.32.5
+PrivateKey = mJaFvu9TBwE2i0rjhfhvpB3xZmp++3BVwa7QAvWXImY=
+ListenPort = 51810
+
+[Peer]
+# Name: ssd-ams-3-1
+PublicKey = 9i0XI358OOYYoxoxV5lX8siqE8uiEwCsuWLo6LoFu0Y=
+Endpoint = ssd-ams-3.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.3/32, 10.2.16.0/20, 10.1.48.0/20, 10.3.64.0/20, 10.0.33.3/32, 10.0.18.3/32, 10.0.19.1/32, 10.0.52.3/32
+
+[Peer]
+# Name: ssd-ams-4-1
+PublicKey = QpJupYlnJc7wc3+gAlEmbFMonsqpVnYRy7f/gnPqqBw=
+Endpoint = ssd-ams-4.m.jpi.cloud:51810
+AllowedIPs = 10.1.32.4/32

m/ssd-ams/ssd-ams-5/wg1.key

@@ -0,0 +1 @@
+mJaFvu9TBwE2i0rjhfhvpB3xZmp++3BVwa7QAvWXImY=

m/ssd-ams/ssd-ams-5/wg1.pub

@@ -0,0 +1 @@
+HDLVEwLv0uugyZ9C1C9ZWuiaWQ1qIqqe/DAUxYI0whM=

m/ssd-lon/regions

@@ -0,0 +1 @@
+uk

m/ssd-lon/ssd-lon-3/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s ceph k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-lon/ssd-lon-3/wg0.conf

@@ -0,0 +1,23 @@
+[Interface]
+# Name: ssd-lon-3-0
+Address = 10.0.33.3
+PrivateKey = WJY1yrd14c0gY4qqq1O8BPck46TVYebXrT+OoMbEqG8=
+ListenPort = 51800
+
+[Peer]
+# Name: ssd-ams-3-0
+PublicKey = y/Gkid2Mjxo1WO9Zi7mh+DETNYKT/AAc3K3bvr9xp3c=
+Endpoint = ssd-ams-3.m.jpi.cloud:51800
+AllowedIPs = 10.1.32.0/20, 10.0.18.3/32
+
+[Peer]
+# Name: htz-fsn-1-0
+PublicKey = K9LYog8vtRFN4nW6dJWMQ9trmRrYuLpbu/Ze5kIiBGw=
+Endpoint = htz-fsn-1.m.jpi.cloud:51800
+AllowedIPs = 10.1.48.0/20, 10.0.19.1/32
+
+[Peer]
+# Name: ssd-nyc-3-0
+PublicKey = 1UFgleUufTszPM1voIcwVhd0DpYZ1HwV05U6p3IS2DE=
+Endpoint = ssd-nyc-3.m.jpi.cloud:51800
+AllowedIPs = 10.3.64.0/20, 10.0.52.3/32

m/ssd-lon/ssd-lon-3/wg0.key

@@ -0,0 +1 @@
+WJY1yrd14c0gY4qqq1O8BPck46TVYebXrT+OoMbEqG8=

m/ssd-lon/ssd-lon-3/wg0.pub

@@ -0,0 +1 @@
+aDXNwapVjufcuQKfBN+waJObe1TaeeaSNl1suA0u+00=

m/ssd-lon/ssd-lon-3/wg1.conf

@@ -0,0 +1,11 @@
+[Interface]
+# Name: ssd-lon-3-1
+Address = 10.2.16.3
+PrivateKey = 2CDO+x8HVKfw1/iqC2WkwIEQyWZsC9XPW1otqxarR0o=
+ListenPort = 51810
+
+[Peer]
+# Name: ssd-lon-7-1
+PublicKey = XGVXDmxQajHpsgpzgrp+r/ZWxZUaodTpvGBJuLlZ0n4=
+Endpoint = ssd-lon-7.m.jpi.cloud:51810
+AllowedIPs = 10.2.16.7/32

m/ssd-lon/ssd-lon-3/wg1.key

@@ -0,0 +1 @@
+2CDO+x8HVKfw1/iqC2WkwIEQyWZsC9XPW1otqxarR0o=

m/ssd-lon/ssd-lon-3/wg1.pub

@@ -0,0 +1 @@
+untmMfW2W4OiMgG/6nAysoivXtDh7cZ9/rxhgJ4OlC4=

m/ssd-lon/ssd-lon-7/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s ceph k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-lon/ssd-lon-7/wg1.conf

@@ -0,0 +1,11 @@
+[Interface]
+# Name: ssd-lon-7-1
+Address = 10.2.16.7
+PrivateKey = iN4Rc3J36APlkIP/ksSpHIwAuxC/ehYLwGQ5va1AhG8=
+ListenPort = 51810
+
+[Peer]
+# Name: ssd-lon-3-1
+PublicKey = untmMfW2W4OiMgG/6nAysoivXtDh7cZ9/rxhgJ4OlC4=
+Endpoint = ssd-lon-3.m.jpi.cloud:51810
+AllowedIPs = 10.2.16.3/32, 10.1.32.0/20, 10.1.48.0/20, 10.3.64.0/20, 10.0.33.3/32, 10.0.18.3/32, 10.0.19.1/32, 10.0.52.3/32

m/ssd-lon/ssd-lon-7/wg1.key

@@ -0,0 +1 @@
+iN4Rc3J36APlkIP/ksSpHIwAuxC/ehYLwGQ5va1AhG8=

m/ssd-lon/ssd-lon-7/wg1.pub

@@ -0,0 +1 @@
+XGVXDmxQajHpsgpzgrp+r/ZWxZUaodTpvGBJuLlZ0n4=

m/ssd-nyc/regions

@@ -0,0 +1 @@
+us

m/ssd-nyc/ssd-nyc-3/hosts

@@ -0,0 +1,22 @@
+127.0.0.1 localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+
+10.2.16.3  ssd-lon-3
+10.2.16.7  ssd-lon-7 ssd-lon-ceph ssd-lon-k3s
+10.1.32.3  ssd-ams-3
+10.1.32.4  ssd-ams-4 ssd-ams-ceph ssd-ams-k3s
+10.1.32.5  ssd-ams-5
+10.1.48.1  htz-fsn-1 htz-fsn-ceph htz-fsn-k3s
+10.3.64.3  ssd-nyc-3 ssd-nyc-ceph ssd-nyc-k3s ceph k3s
+
+10.0.33.3  ssd-lon-3-0
+10.0.18.3  ssd-ams-3-0
+10.0.19.1  htz-fsn-1-0
+10.0.52.3  ssd-nyc-3-0

m/ssd-nyc/ssd-nyc-3/region

@@ -0,0 +1 @@
+none

m/ssd-nyc/ssd-nyc-3/wg0.conf

@@ -0,0 +1,23 @@
+[Interface]
+# Name: ssd-nyc-3-0
+Address = 10.0.52.3
+PrivateKey = YNDxj+QSO3p5pXw9h7lBx0cLM0kJDv3v7BYLfc8TR3I=
+ListenPort = 51800
+
+[Peer]
+# Name: ssd-lon-3-0
+PublicKey = aDXNwapVjufcuQKfBN+waJObe1TaeeaSNl1suA0u+00=
+Endpoint = ssd-lon-3.m.jpi.cloud:51800
+AllowedIPs = 10.2.16.0/20, 10.0.33.3/32
+
+[Peer]
+# Name: ssd-ams-3-0
+PublicKey = y/Gkid2Mjxo1WO9Zi7mh+DETNYKT/AAc3K3bvr9xp3c=
+Endpoint = ssd-ams-3.m.jpi.cloud:51800
+AllowedIPs = 10.1.32.0/20, 10.0.18.3/32
+
+[Peer]
+# Name: htz-fsn-1-0
+PublicKey = K9LYog8vtRFN4nW6dJWMQ9trmRrYuLpbu/Ze5kIiBGw=
+Endpoint = htz-fsn-1.m.jpi.cloud:51800
+AllowedIPs = 10.1.48.0/20, 10.0.19.1/32

m/ssd-nyc/ssd-nyc-3/wg0.key

@@ -0,0 +1 @@
+YNDxj+QSO3p5pXw9h7lBx0cLM0kJDv3v7BYLfc8TR3I=

m/ssd-nyc/ssd-nyc-3/wg0.pub

@@ -0,0 +1 @@
+1UFgleUufTszPM1voIcwVhd0DpYZ1HwV05U6p3IS2DE=

m/ssd-nyc/ssd-nyc-3/wg1.conf

@@ -0,0 +1,5 @@
+[Interface]
+# Name: ssd-nyc-3-1
+Address = 10.3.64.3
+PrivateKey = APXGKqOxx1gOr587FSN3O3gRGpkGgSjt6zGlTu49UlU=
+ListenPort = 51810

m/ssd-nyc/ssd-nyc-3/wg1.key

@@ -0,0 +1 @@
+APXGKqOxx1gOr587FSN3O3gRGpkGgSjt6zGlTu49UlU=

m/ssd-nyc/ssd-nyc-3/wg1.pub

@@ -0,0 +1 @@
+av8ni/9ZUyozabzqTjIy1sOnSJuQ9p63Tu9ECVmHB2I=

pkg/ceph/config.go

@@ -39,6 +39,9 @@ func writeGlobalToBuffer(w *bytes.Buffer, c *GlobalConfig) {
 	_, _ = fmt.Fprintf(w, "%s = %s\n", "mon_initial_members", strings.Join(c.Monitors, ", "))
 	_, _ = fmt.Fprintf(w, "%s = %s\n", "mon_host", joinAddrs(c.MonitorsAddr, ", "))
 	_, _ = fmt.Fprintf(w, "%s = %s\n", "cluster_network", c.ClusterNetwork.String())
+
+	_, _ = fmt.Fprintf(w, "\n; %s\n", "don't rewrite labels on startup")
+	_, _ = fmt.Fprintf(w, "%s = %s\n", "osd_class_update_on_start", "false")
 }
 
 func joinAddrs(addrs []netip.Addr, sep string) string {

pkg/ceph/config_parser.go

@@ -17,7 +17,7 @@ var sectionMap = map[string]func(*Config, *basic.Section) error{
 func loadConfSection(out *Config, src *basic.Section) error {
 	h, ok := sectionMap[src.Key]
 	if !ok {
-		return core.Wrapf(fs.ErrInvalid, "unknown section %q", src.Key)
+		return core.Wrap(fs.ErrInvalid, "unknown section %q", src.Key)
 	}
 
 	return h(out, src)
@@ -48,7 +48,7 @@ func loadGlobalConfField(cfg *GlobalConfig, field basic.Field) error {
 	switch field.Key {
 	case "fsid":
 		if !core.IsZero(cfg.FSID) {
-			return core.Wrapf(fs.ErrInvalid, "duplicate field %q", field.Key)
+			return core.Wrap(fs.ErrInvalid, "duplicate field %q", field.Key)
 		}
 
 		err := cfg.FSID.UnmarshalText([]byte(field.Value))

pkg/cluster/addr.go

@@ -0,0 +1,43 @@
+package cluster
+
+import (
+	"net/netip"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
+)
+
+// RingOnePrefix returns the ring 1 subnet of this [Zone].
+func (z *Zone) RingOnePrefix() netip.Prefix {
+	subnet, err := rings.RingOnePrefix(z.RegionID(), z.ID)
+	if err != nil {
+		panic(err)
+	}
+	return subnet
+}
+
+// RingOnePrefix returns the ring 1 subnet this [Machine] belongs
+// to.
+func (m *Machine) RingOnePrefix() netip.Prefix {
+	return m.zone.RingOnePrefix()
+}
+
+// RingZeroAddress returns the ring 0 address of the [Machine]
+// if it can act as gateway.
+func (m *Machine) RingZeroAddress() (netip.Addr, bool) {
+	addr, err := rings.RingZeroAddress(m.Region(), m.Zone(), m.ID)
+	if err != nil {
+		return netip.Addr{}, false
+	}
+
+	return addr, true
+}
+
+// RingOneAddress returns the ring 1 address of the [Machine]
+func (m *Machine) RingOneAddress() netip.Addr {
+	addr, err := rings.RingOneAddress(m.Region(), m.Zone(), m.ID)
+	if err != nil {
+		panic(err)
+	}
+
+	return addr
+}

pkg/cluster/ceph.go

@@ -66,7 +66,7 @@ func (m *Cluster) GenCephConfig() (*ceph.Config, error) {
 
 	m.ForEachZone(func(z *Zone) bool {
 		for _, p := range z.GetCephMonitors() {
-			addr, _ := RingOneAddress(z.ID, p.ID)
+			addr := p.RingOneAddress()
 
 			cfg.Global.Monitors = append(cfg.Global.Monitors, p.Name)
 			cfg.Global.MonitorsAddr = append(cfg.Global.MonitorsAddr, addr)

pkg/cluster/ceph_scan.go

@@ -4,6 +4,7 @@ import (
 	"os"
 
 	"darvaza.org/slog"
+
 	"git.jpi.io/amery/jpictl/pkg/ceph"
 )
 
@@ -14,8 +15,7 @@ type cephScanTODO struct {
 
 func (todo *cephScanTODO) checkMachine(p *Machine) bool {
 	// on ceph all addresses are ring1
-	ring1, _ := RingOneAddress(p.Zone(), p.ID)
+	addr := p.RingOneAddress().String()
-	addr := ring1.String()
 
 	if _, found := todo.names[p.Name]; found {
 		// found on the TODO by name
@@ -71,12 +71,9 @@ func newCephScanTODO(cfg *ceph.Config) *cephScanTODO {
 	return todo
 }
 
-func (m *Cluster) scanCephMonitors(_ *ScanOptions) error {
+func (m *Cluster) scanCephMonitors(opts *ScanOptions) error {
 	cfg, err := m.GetCephConfig()
-	switch {
+	if err != nil && !os.IsNotExist(err) {
-	case os.IsNotExist(err):
-		err = nil
-	case err != nil:
 		return err
 	}
 
@@ -94,6 +91,10 @@ func (m *Cluster) scanCephMonitors(_ *ScanOptions) error {
 		todo.LogMissing(m.log)
 	}
 
+	return m.initCephMonitors(opts)
+}
+
+func (m *Cluster) initCephMonitors(_ *ScanOptions) error {
 	// make sure every zone has one
 	m.ForEachZone(func(z *Zone) bool {
 		_ = z.GetCephMonitors()

pkg/cluster/cluster.go

@@ -27,7 +27,8 @@ type Cluster struct {
 	Domain  string `json:"domain,omitempty" yaml:"domain,omitempty"`
 
 	CephFSID uuid.UUID `json:"ceph_fsid,omitempty" yaml:"ceph_fsid,omitempty"`
-	Zones    []*Zone   `json:"zones,omitempty"     yaml:"zones,omitempty"`
+	Regions  []Region  `json:",omitempty"          yaml:",omitempty"`
+	Zones    []*Zone   `json:",omitempty"          yaml:",omitempty"`
 }
 
 // revive:enable:line-length-limit

pkg/cluster/cluster_file.go

@@ -1,9 +1,12 @@
 package cluster
 
 import (
+	"bufio"
+	"bytes"
 	"fmt"
 	"io"
 	"os"
+	"strings"
 
 	fs "github.com/hack-pad/hackpadfs"
 )
@@ -33,7 +36,26 @@ func (m *Cluster) openWriter(name string, flags int, args ...any) (io.WriteClose
 		return nil, err
 	}
 
-	return f.(io.WriteCloser), nil
+	if f, ok := f.(io.WriteCloser); ok {
+		return f, nil
+	}
+
+	panic("unreachable")
+}
+
+// RemoveFile deletes a file from the cluster's config directory
+func (m *Cluster) RemoveFile(name string, args ...any) error {
+	if len(args) > 0 {
+		name = fmt.Sprintf(name, args...)
+	}
+
+	err := fs.Remove(m.dir, name)
+	switch {
+	case os.IsNotExist(err):
+		return nil
+	default:
+		return err
+	}
 }
 
 // ReadFile reads a file from the cluster's config directory
@@ -44,3 +66,50 @@ func (m *Cluster) ReadFile(name string, args ...any) ([]byte, error) {
 
 	return fs.ReadFile(m.dir, name)
 }
+
+// ReadLines reads a file from the cluster's config directory,
+// split by lines, trimmed, and accepting `#` to comment lines out.
+func (m *Cluster) ReadLines(name string, args ...any) ([]string, error) {
+	var out []string
+
+	data, err := m.ReadFile(name, args...)
+	if err != nil {
+		return nil, err
+	}
+
+	sc := bufio.NewScanner(bytes.NewReader(data))
+	for sc.Scan() {
+		s := strings.TrimSpace(sc.Text())
+		switch {
+		case s == "", strings.HasPrefix(s, "#"):
+			// ignore
+		default:
+			// accepted
+			out = append(out, s)
+		}
+	}
+
+	return out, nil
+}
+
+// WriteStringFile writes the given content to a file on the machine's config directory
+func (m *Cluster) WriteStringFile(value string, name string, args ...any) error {
+	f, err := m.CreateTruncFile(name, args...)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	buf := bytes.NewBufferString(value)
+	_, err = buf.WriteTo(f)
+	return err
+}
+
+// MkdirAll creates directories relative to the cluster's config directory
+func (m *Cluster) MkdirAll(name string, args ...any) error {
+	if len(args) > 0 {
+		name = fmt.Sprintf(name, args...)
+	}
+
+	return fs.MkdirAll(m.dir, name, 0755)
+}

pkg/cluster/cluster_import.go

@@ -6,14 +6,18 @@ import (
 	"os"
 
 	"gopkg.in/yaml.v3"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 func (m *Cluster) init(opts *ScanOptions) error {
 	for _, fn := range []func(*ScanOptions) error{
 		m.initZones,
+		m.initRegions,
 		m.scanZoneIDs,
 		m.scanSort,
 		m.scanGateways,
+		m.initCephMonitors,
 	} {
 		if err := fn(opts); err != nil {
 			return err
@@ -43,7 +47,7 @@ func (m *Cluster) initZones(opts *ScanOptions) error {
 
 func (m *Cluster) initZone(z *Zone, _ *ScanOptions) error {
 	var hasMissing bool
-	var lastMachineID int
+	var lastMachineID rings.NodeID
 
 	z.zones = m
 	z.logger = m
@@ -56,7 +60,7 @@ func (m *Cluster) initZone(z *Zone, _ *ScanOptions) error {
 		case p.ID == 0:
 			hasMissing = true
 		case p.ID > lastMachineID:
-			lastMachineID = z.ID
+			lastMachineID = p.ID
 		}
 
 		return false

pkg/cluster/cluster_scan.go

@@ -2,15 +2,30 @@ package cluster
 
 import (
 	"io/fs"
+	"path"
 	"sort"
+	"strings"
 
 	"darvaza.org/core"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
+)
+
+const (
+	// ZoneRegionsFileName indicates the file containing
+	// region names as references
+	ZoneRegionsFileName = "regions"
+
+	// RegionClusterTokenFileName contains the kubernetes
+	// token of the cluster this region represents
+	RegionClusterTokenFileName = "k8s_token"
 )
 
 func (m *Cluster) scan(opts *ScanOptions) error {
 	for _, fn := range []func(*ScanOptions) error{
 		m.scanDirectory,
 		m.scanMachines,
+		m.initRegions,
 		m.scanZoneIDs,
 		m.scanSort,
 		m.scanGateways,
@@ -24,7 +39,7 @@ func (m *Cluster) scan(opts *ScanOptions) error {
 	return nil
 }
 
-func (m *Cluster) scanDirectory(_ *ScanOptions) error {
+func (m *Cluster) scanDirectory(opts *ScanOptions) error {
 	// each directory is a zone
 	entries, err := fs.ReadDir(m.dir, ".")
 	if err != nil {
@@ -33,16 +48,14 @@ func (m *Cluster) scanDirectory(_ *ScanOptions) error {
 
 	for _, e := range entries {
 		if e.IsDir() {
-			z, err := m.newZone(e.Name())
+			ok, err := m.scanSubdirectory(opts, e.Name())
 			switch {
 			case err != nil:
 				return core.Wrap(err, e.Name())
-			case z.Machines.Len() == 0:
+			case !ok:
-				z.warn(nil).
+				m.warn(nil).
-					WithField("zone", z.Name).
+					WithField("zone", e.Name()).
 					Print("empty")
-			default:
-				m.Zones = append(m.Zones, z)
 			}
 		}
 	}
@@ -50,6 +63,27 @@ func (m *Cluster) scanDirectory(_ *ScanOptions) error {
 	return nil
 }
 
+func (m *Cluster) scanSubdirectory(_ *ScanOptions, name string) (bool, error) {
+	z, err := m.newZone(name)
+	switch {
+	case err != nil:
+		// somewhere went wrong scanning the subdirectory
+		return false, err
+	case z.Machines.Len() > 0:
+		// zones have machines and the regions they belong
+		m.Zones = append(m.Zones, z)
+		return true, nil
+	case len(z.Regions) > 0:
+		// regions have no machines but can include
+		// other regions
+		m.appendRegionRegions(name, z.Regions...)
+		return true, nil
+	default:
+		// empty
+		return false, nil
+	}
+}
+
 func (m *Cluster) newZone(name string) (*Zone, error) {
 	z := &Zone{
 		zones:  m,
@@ -73,12 +107,16 @@ func (m *Cluster) scanMachines(opts *ScanOptions) error {
 		err = p.scan(opts)
 		return err != nil
 	})
+	m.ForEachMachine(func(p *Machine) bool {
+		err = p.scanWrapUp(opts)
+		return err != nil
+	})
 	return err
 }
 
 func (m *Cluster) scanZoneIDs(_ *ScanOptions) error {
 	var hasMissing bool
-	var lastZoneID int
+	var lastZoneID rings.ZoneID
 
 	m.ForEachZone(func(z *Zone) bool {
 		switch {
@@ -150,34 +188,96 @@ func (z *Zone) scan() error {
 	}
 
 	for _, e := range entries {
-		if e.IsDir() {
+		name := e.Name()
-			m := &Machine{
-				zone:   z,
-				logger: z,
-				Name:   e.Name(),
-			}
 
-			m.debug().
+		switch {
-				WithField("node", m.Name).
+		case name == ZoneRegionsFileName:
+			err = z.loadRegions()
+		case name == RegionClusterTokenFileName:
+			err = z.loadClusterToken()
+		case e.IsDir():
+			err = z.scanSubdirectory(name)
+		default:
+			z.warn(nil).
 				WithField("zone", z.Name).
-				Print("found")
+				WithField("filename", name).
+				Print("unknown")
+		}
 
-			if err := m.init(); err != nil {
+		if err != nil {
-				m.error(err).
+			return err
-					WithField("node", m.Name).
-					WithField("zone", z.Name).
-					Print()
-
-				return err
-			}
-
-			z.Machines = append(z.Machines, m)
 		}
 	}
 
 	return nil
 }
 
+func (z *Zone) loadRegions() error {
+	filename := path.Join(z.Name, ZoneRegionsFileName)
+	regions, err := z.zones.ReadLines(filename)
+
+	if err == nil {
+		// parsed
+		err = z.appendRegions(regions...)
+		if err != nil {
+			err = core.Wrap(err, filename)
+		}
+	}
+
+	return err
+}
+
+func (z *Zone) loadClusterToken() error {
+	var token string
+
+	filename := path.Join(z.Name, RegionClusterTokenFileName)
+	lines, err := z.zones.ReadLines(filename)
+	if err != nil {
+		return err
+	}
+
+	// first non-empty line
+	for _, s := range lines {
+		s = strings.TrimSpace(s)
+		if s != "" {
+			token = s
+			break
+		}
+	}
+
+	err = z.zones.setRegionClusterToken(z.Name, token)
+	if err != nil {
+		err = core.Wrap(err, filename)
+	}
+
+	return err
+}
+
+func (z *Zone) scanSubdirectory(name string) error {
+	m := &Machine{
+		zone:   z,
+		logger: z,
+		Name:   name,
+	}
+
+	m.debug().
+		WithField("node", m.Name).
+		WithField("zone", z.Name).
+		Print("found")
+
+	if err := m.init(); err != nil {
+		m.error(err).
+			WithField("node", m.Name).
+			WithField("zone", z.Name).
+			Print()
+
+		return err
+	}
+
+	z.Machines = append(z.Machines, m)
+	return nil
+}
+
 // GetGateway returns the first gateway found, if none
 // files will be created to enable the first [Machine] to
 // be one

pkg/cluster/cluster_scan_options.go

@@ -27,7 +27,7 @@ type ScanOptions struct {
 // the DNS resolver to get PublicAddresses of nodes.
 // Default is true
 func ResolvePublicAddresses(resolve bool) ScanOption {
-	return func(m *Cluster, opt *ScanOptions) error {
+	return func(_ *Cluster, opt *ScanOptions) error {
 		opt.DontResolvePublicAddresses = !resolve
 		return nil
 	}
@@ -36,7 +36,7 @@ func ResolvePublicAddresses(resolve bool) ScanOption {
 // WithLookuper specifies what resolver.Lookuper to use to
 // find public addresses
 func WithLookuper(h resolver.Lookuper) ScanOption {
-	return func(m *Cluster, opt *ScanOptions) error {
+	return func(m *Cluster, _ *ScanOptions) error {
 		if h == nil {
 			return fs.ErrInvalid
 		}
@@ -49,7 +49,7 @@ func WithLookuper(h resolver.Lookuper) ScanOption {
 // public addresses. if nil is passed, the [net.Resolver] will be used.
 // The default is using Cloudflare's 1.1.1.1.
 func WithResolver(h resolver.Resolver) ScanOption {
-	return func(m *Cluster, opt *ScanOptions) error {
+	return func(m *Cluster, _ *ScanOptions) error {
 		if h == nil {
 			h = resolver.SystemResolver(true)
 		}

pkg/cluster/env.go

@@ -5,11 +5,16 @@ import (
 	"fmt"
 	"io"
 	"strings"
+
+	"darvaza.org/core"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 // Env is a shell environment factory for this cluster
 type Env struct {
 	ZoneIterator
+	RegionIterator
 
 	cephFSID string
 	export   bool
@@ -23,26 +28,61 @@ func (m *Cluster) Env(export bool) (*Env, error) {
 	}
 
 	env := &Env{
-		ZoneIterator: m,
+		ZoneIterator:   m,
-		cephFSID:     fsid.String(),
+		RegionIterator: m,
-		export:       export,
+		cephFSID:       fsid.String(),
+		export:         export,
 	}
 
 	return env, nil
 }
 
-// Zones returns the list of Zone IDs
+// Zones returns the list of Zone IDs of a region,
-func (m *Env) Zones() []int {
+// or from all if none is specified.
-	var zones []int
+func (m *Env) Zones(r *Region) []rings.ZoneID {
+	var zones []rings.ZoneID
 
-	m.ForEachZone(func(z *Zone) bool {
+	iter := core.IIf[ZoneIterator](r != nil, r, m)
+
+	iter.ForEachZone(func(z *Zone) bool {
 		zones = append(zones, z.ID)
 		return false
 	})
 
+	core.SliceSortOrdered(zones)
 	return zones
 }
 
+// RegionsNames returns a sorted list of primary regions names
+func (m *Env) RegionsNames() []string {
+	var regions []string
+
+	m.ForEachRegion(func(r *Region) bool {
+		if r.IsPrimary() {
+			regions = append(regions, r.Name)
+		}
+
+		return false
+	})
+
+	core.SliceSortOrdered(regions)
+	return regions
+}
+
+// Regions returns a sorted list of primary regions IDs
+func (m *Env) Regions() (regions []rings.RegionID) {
+	m.ForEachRegion(func(r *Region) bool {
+		if r.IsPrimary() {
+			regions = append(regions, r.ID)
+		}
+
+		return false
+	})
+
+	core.SliceSortOrdered(regions)
+	return regions
+}
+
 // WriteTo generates environment variables for shell scripts
 func (m *Env) WriteTo(w io.Writer) (int64, error) {
 	var buf bytes.Buffer
@@ -51,56 +91,75 @@ func (m *Env) WriteTo(w io.Writer) (int64, error) {
 		m.writeEnvVar(&buf, m.cephFSID, "FSID")
 	}
 
-	m.writeEnvVarInts(&buf, m.Zones(), "ZONES")
+	regions := m.getRegions()
-
+	ids := core.SliceMap(regions, func(_ []rings.RegionID, r *Region) (out []rings.RegionID) {
-	m.ForEachZone(func(z *Zone) bool {
+		return append(out, r.ID)
-		m.writeEnvZone(&buf, z)
-		return false
 	})
+	names := core.SliceMap(regions, func(_ []string, r *Region) (out []string) {
+		return append(out, r.Name)
+	})
+
+	m.writeEnvVar(&buf, genEnvInts(ids), "REGIONS")
+	m.writeEnvVar(&buf, genEnvStrings(names), "REGIONS_NAMES")
+
+	for _, r := range regions {
+		m.writeEnvRegion(&buf, r)
+	}
 
 	return buf.WriteTo(w)
 }
 
-func (m *Env) writeEnvZone(w io.Writer, z *Zone) {
+func (m *Env) getRegions() (out []*Region) {
-	zoneID := z.ID
+	m.ForEachRegion(func(r *Region) bool {
+		if r.IsPrimary() {
+			out = append(out, r)
+		}
+		return false
+	})
 
-	// ZONE{zoneID}
+	core.SliceSortFn(out, func(a, b *Region) bool {
-	m.writeEnvVar(w, genEnvZoneNodes(z), "ZONE%v", zoneID)
+		return a.ID < b.ID
+	})
 
-	// ZONE{zoneID}_NAME
+	return out
-	m.writeEnvVar(w, z.Name, "ZONE%v_%s", zoneID, "NAME")
+}
+func (m *Env) writeEnvRegion(w io.Writer, r *Region) {
+	regionID := r.ID
 
-	// ZONE{zoneID}_GW
+	// REGION{regionID}_NAME
+	m.writeEnvVar(w, r.Name, "REGION%v_%s", regionID, "NAME")
+
+	// REGION{regionID}_ZONES
+	m.writeEnvVar(w, genEnvInts(m.Zones(r)), "REGION%v_%s", regionID, "ZONES")
+
+	r.ForEachZone(func(z *Zone) bool {
+		m.writeEnvZone(w, r, z)
+		return false
+	})
+}
+
+func (m *Env) writeEnvZone(w io.Writer, r *Region, z *Zone) {
+	zonePrefix := fmt.Sprintf("REGION%v_ZONE%v", r.ID, z.ID)
+	monPrefix := zonePrefix + "_MON"
+
+	// REGION{regionID}_ZONE{zoneID}
+	m.writeEnvVar(w, genEnvZoneNodes(z), zonePrefix)
+
+	// REGION{regionID}_ZONE{zoneID}_NAME
+	m.writeEnvVar(w, z.Name, zonePrefix+"_NAME")
+
+	// REGION{regionID}_ZONE{zoneID}_GW
 	gateways, _ := z.GatewayIDs()
-	m.writeEnvVarInts(w, gateways, "ZONE%v_%s", zoneID, "GW")
+	m.writeEnvVar(w, genEnvInts(gateways), zonePrefix+"_GW")
 
 	// Ceph
 	monitors := z.GetCephMonitors()
-	// MON{zoneID}_NAME
+	// REGION{regionID}_MON{zone_ID}
-	m.writeEnvVar(w, genEnvZoneCephMonNames(monitors), "MON%v_%s", zoneID, "NAME")
+	m.writeEnvVar(w, genEnvZoneCephMonNames(monitors), monPrefix)
-	// MON{zoneID}_IP
+	// REGION{regionID}_MON{zone_ID}_IP
-	m.writeEnvVar(w, genEnvZoneCephMonIPs(monitors), "MON%v_%s", zoneID, "IP")
+	m.writeEnvVar(w, genEnvZoneCephMonIPs(monitors), monPrefix+"_IP")
-	// MON{zoneID}_ID
+	// REGION{regionID}_MON{zone_ID}_ID
-	m.writeEnvVar(w, genEnvZoneCephMonIDs(monitors), "MON%v_%s", zoneID, "ID")
+	m.writeEnvVar(w, genEnvZoneCephMonIDs(monitors), monPrefix+"_ID")
-}
-
-func (m *Env) writeEnvVarInts(w io.Writer, value []int, name string, args ...any) {
-	var s string
-
-	if n := len(value); n > 0 {
-		var buf bytes.Buffer
-
-		for i, v := range value {
-			if i != 0 {
-				_, _ = fmt.Fprint(&buf, " ")
-			}
-			_, _ = fmt.Fprintf(&buf, "%v", v)
-		}
-
-		s = buf.String()
-	}
-
-	m.writeEnvVar(w, s, name, args...)
 }
 
 func (m *Env) writeEnvVar(w io.Writer, value string, name string, args ...any) {
@@ -117,10 +176,32 @@ func (m *Env) writeEnvVar(w io.Writer, value string, name string, args ...any) {
 	if name != "" {
 		value = strings.TrimSpace(value)
 
-		_, _ = fmt.Fprintf(w, "%s%s=%q\n", prefix, name, value)
+		if value == "" {
+			_, _ = fmt.Fprintf(w, "%s%s=\n", prefix, name)
+		} else {
+			_, _ = fmt.Fprintf(w, "%s%s=%q\n", prefix, name, value)
+		}
 	}
 }
 
+func genEnvInts[T core.Signed](values []T) string {
+	var buf bytes.Buffer
+
+	for _, v := range values {
+		if buf.Len() > 0 {
+			_, _ = buf.WriteRune(' ')
+		}
+
+		_, _ = buf.WriteString(fmt.Sprintf("%v", int64(v)))
+	}
+
+	return buf.String()
+}
+
+func genEnvStrings(values []string) string {
+	return strings.Join(values, " ")
+}
+
 func genEnvZoneNodes(z *Zone) string {
 	if n := z.Len(); n > 0 {
 		s := make([]string, 0, n)
@@ -130,7 +211,7 @@ func genEnvZoneNodes(z *Zone) string {
 			return false
 		})
 
-		return strings.Join(s, " ")
+		return genEnvStrings(s)
 	}
 	return ""
 }
@@ -151,7 +232,7 @@ func genEnvZoneCephMonNames(m Machines) string {
 func genEnvZoneCephMonIPs(m Machines) string {
 	var buf strings.Builder
 	m.ForEachMachine(func(p *Machine) bool {
-		addr, _ := RingOneAddress(p.Zone(), p.ID)
+		addr := p.RingOneAddress()
 
 		if buf.Len() > 0 {
 			_, _ = buf.WriteRune(' ')

pkg/cluster/errors.go

@@ -1,6 +1,13 @@
 package cluster
 
-import "errors"
+import (
+	"errors"
+	"io/fs"
+
+	"darvaza.org/core"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
+)
 
 var (
 	// ErrInvalidName indicates the name isn't valid
@@ -14,3 +21,9 @@ var (
 	// the intended purpose
 	ErrInvalidNode = errors.New("invalid node")
 )
+
+// ErrInvalidRing returns an error indicating the [rings.RingID]
+// can't be used for the intended purpose
+func ErrInvalidRing(ringID rings.RingID) error {
+	return core.QuietWrap(fs.ErrInvalid, "invalid ring %v", ringID)
+}

pkg/cluster/hosts.go

@@ -71,14 +71,14 @@ func (p *Machine) WriteHosts() error {
 func (z *Zone) genHosts(out *hostsFile, p *Machine) {
 	var names []string
 
-	ip, _ := RingOneAddress(p.zone.ID, p.ID)
+	ip := p.RingOneAddress()
 	names = append(names, p.Name)
 
 	if p.CephMonitor {
 		names = append(names, fmt.Sprintf("%s-%s", p.zone.Name, "ceph"))
 		names = append(names, fmt.Sprintf("%s-%s", p.zone.Name, "k3s"))
 
-		if z.ID == p.zone.ID {
+		if z.Is(p.Region(), p.Zone()) {
 			names = append(names, "ceph")
 			names = append(names, "k3s")
 		}
@@ -94,7 +94,7 @@ func (z *Zone) genHosts(out *hostsFile, p *Machine) {
 	if p.IsGateway() {
 		var s string
 
-		ip, _ = RingZeroAddress(p.zone.ID, p.ID)
+		ip, _ = p.RingZeroAddress()
 		s = fmt.Sprintf("%s-%v", p.Name, 0)
 
 		entry = hostsEntry{

pkg/cluster/machine.go

@@ -3,6 +3,8 @@ package cluster
 import (
 	"net/netip"
 	"strings"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 // revive:disable:line-length-limit
@@ -12,9 +14,10 @@ type Machine struct {
 	zone   *Zone
 	logger `json:"-" yaml:"-"`
 
-	ID   int
+	ID   rings.NodeID
 	Name string `json:"-" yaml:"-"`
 
+	Inactive        bool         `json:"inactive,omitempty"     yaml:"inactive,omitempty"`
 	CephMonitor     bool         `json:"ceph_monitor,omitempty" yaml:"ceph_monitor,omitempty"`
 	PublicAddresses []netip.Addr `json:"public,omitempty"       yaml:"public,omitempty"`
 	Rings           []*RingInfo  `json:"rings,omitempty"        yaml:"rings,omitempty"`
@@ -43,15 +46,20 @@ func (m *Machine) FullName() string {
 	return strings.Join(name, ".")
 }
 
+// IsActive indicates the machine is to be included in regions' DNS entries
+func (m *Machine) IsActive() bool {
+	return !m.Inactive
+}
+
 // IsGateway tells if the Machine is a ring0 gateway
 func (m *Machine) IsGateway() bool {
-	_, ok := m.getRingInfo(0)
+	_, ok := m.getRingInfo(rings.RingZeroID)
 	return ok
 }
 
 // SetGateway enables/disables a Machine ring0 integration
 func (m *Machine) SetGateway(enabled bool) error {
-	ri, found := m.getRingInfo(0)
+	ri, found := m.getRingInfo(rings.RingZeroID)
 	switch {
 	case !found && !enabled:
 		return nil
@@ -64,14 +72,19 @@ func (m *Machine) SetGateway(enabled bool) error {
 	}
 
 	ri.Enabled = enabled
-	return m.SyncWireguardConfig(0)
+	return m.SyncWireguardConfig(rings.RingZeroID)
 }
 
 // Zone indicates the [Zone] this machine belongs to
-func (m *Machine) Zone() int {
+func (m *Machine) Zone() rings.ZoneID {
 	return m.zone.ID
 }
 
+// Region indicates the [Region] this machine belongs to
+func (m *Machine) Region() rings.RegionID {
+	return m.zone.RegionID()
+}
+
 func (m *Machine) getPeerByName(name string) (*Machine, bool) {
 	return m.zone.zones.GetMachineByName(name)
 }

pkg/cluster/machine_file.go

@@ -1,7 +1,6 @@
 package cluster
 
 import (
-	"bytes"
 	"fmt"
 	"io"
 	"os"
@@ -12,10 +11,9 @@ import (
 
 // OpenFile opens a file on the machine's config directory with the specified flags
 func (m *Machine) OpenFile(name string, flags int, args ...any) (fs.File, error) {
-	base := m.zone.zones.dir
 	fullName := m.getFilename(name, args...)
 
-	return fs.OpenFile(base, fullName, flags, 0644)
+	return m.zone.zones.OpenFile(fullName, flags)
 }
 
 // CreateTruncFile creates or truncates a file on the machine's config directory
@@ -34,42 +32,47 @@ func (m *Machine) openWriter(name string, flags int, args ...any) (io.WriteClose
 		return nil, err
 	}
 
-	return f.(io.WriteCloser), nil
+	if f, ok := f.(io.WriteCloser); ok {
+		return f, nil
+	}
+
+	panic("unreachable")
 }
 
 // RemoveFile deletes a file from the machine's config directory
 func (m *Machine) RemoveFile(name string, args ...any) error {
-	base := m.zone.zones.dir
 	fullName := m.getFilename(name, args...)
-	err := fs.Remove(base, fullName)
 
-	switch {
+	return m.zone.zones.RemoveFile(fullName)
-	case os.IsNotExist(err):
-		return nil
-	default:
-		return err
-	}
 }
 
 // ReadFile reads a file from the machine's config directory
 func (m *Machine) ReadFile(name string, args ...any) ([]byte, error) {
-	base := m.zone.zones.dir
 	fullName := m.getFilename(name, args...)
 
-	return fs.ReadFile(base, fullName)
+	return m.zone.zones.ReadFile(fullName)
+}
+
+// ReadLines reads a file from the machine's config directory,
+// split by lines, trimmed, and accepting `#` to comment lines out.
+func (m *Machine) ReadLines(name string, args ...any) ([]string, error) {
+	fullName := m.getFilename(name, args...)
+
+	return m.zone.zones.ReadLines(fullName)
 }
 
 // WriteStringFile writes the given content to a file on the machine's config directory
 func (m *Machine) WriteStringFile(value string, name string, args ...any) error {
-	f, err := m.CreateTruncFile(name, args...)
+	fullName := m.getFilename(name, args...)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
 
-	buf := bytes.NewBufferString(value)
+	return m.zone.zones.WriteStringFile(value, fullName)
-	_, err = buf.WriteTo(f)
+}
-	return err
+
+// MkdirAll creates directories relative to the machine's config directory
+func (m *Machine) MkdirAll(name string, args ...any) error {
+	fullName := m.getFilename(name, args...)
+
+	return m.zone.zones.MkdirAll(fullName)
 }
 
 func (m *Machine) getFilename(name string, args ...any) string {

pkg/cluster/machine_rings.go

@@ -8,18 +8,26 @@ import (
 
 	"darvaza.org/core"
 
+	"git.jpi.io/amery/jpictl/pkg/rings"
 	"git.jpi.io/amery/jpictl/pkg/wireguard"
 )
 
 // GetWireguardKeys reads a wgN.key/wgN.pub files
-func (m *Machine) GetWireguardKeys(ring int) (wireguard.KeyPair, error) {
+func (m *Machine) GetWireguardKeys(ringID rings.RingID) (wireguard.KeyPair, error) {
 	var (
 		data []byte
-		err  error
 		out  wireguard.KeyPair
 	)
 
-	data, err = m.ReadFile("wg%v.key", ring)
+	ring, err := AsWireguardInterfaceID(ringID)
+	if err != nil {
+		// invalid ring
+		return out, err
+	}
+
+	keyFile, pubFile, _ := ring.Files()
+
+	data, err = m.ReadFile(keyFile)
 	if err != nil {
 		// failed to read
 		return out, err
@@ -28,11 +36,11 @@ func (m *Machine) GetWireguardKeys(ring int) (wireguard.KeyPair, error) {
 	out.PrivateKey, err = wireguard.PrivateKeyFromBase64(string(data))
 	if err != nil {
 		// bad key
-		err = core.Wrapf(err, "wg%v.key", ring)
+		err = core.Wrap(err, keyFile)
 		return out, err
 	}
 
-	data, err = m.ReadFile("wg%v.pub", ring)
+	data, err = m.ReadFile(pubFile)
 	switch {
 	case os.IsNotExist(err):
 		// no wgN.pub is fine
@@ -44,7 +52,7 @@ func (m *Machine) GetWireguardKeys(ring int) (wireguard.KeyPair, error) {
 		out.PublicKey, err = wireguard.PublicKeyFromBase64(string(data))
 		if err != nil {
 			// bad key
-			err = core.Wrapf(err, "wg%v.pub", ring)
+			err = core.Wrap(err, pubFile)
 			return out, err
 		}
 	}
@@ -53,8 +61,8 @@ func (m *Machine) GetWireguardKeys(ring int) (wireguard.KeyPair, error) {
 	return out, err
 }
 
-func (m *Machine) tryReadWireguardKeys(ring int) error {
+func (m *Machine) tryReadWireguardKeys(ringID rings.RingID) error {
-	kp, err := m.GetWireguardKeys(ring)
+	kp, err := m.GetWireguardKeys(ringID)
 	switch {
 	case os.IsNotExist(err):
 		// ignore
@@ -65,20 +73,25 @@ func (m *Machine) tryReadWireguardKeys(ring int) error {
 	default:
 		// import keys
 		ri := &RingInfo{
-			Ring: ring,
+			Ring: MustWireguardInterfaceID(ringID),
 			Keys: kp,
 		}
 
-		return m.applyRingInfo(ring, ri)
+		return m.applyRingInfo(ringID, ri)
 	}
 }
 
 // RemoveWireguardKeys deletes wgN.key and wgN.pub from
 // the machine's config directory
-func (m *Machine) RemoveWireguardKeys(ring int) error {
+func (m *Machine) RemoveWireguardKeys(ringID rings.RingID) error {
-	var err error
+	ring, err := AsWireguardInterfaceID(ringID)
+	if err != nil {
+		return err
+	}
 
-	err = m.RemoveFile("wg%v.pub", ring)
+	keyFile, pubFile, _ := ring.Files()
+
+	err = m.RemoveFile(pubFile)
 	switch {
 	case os.IsNotExist(err):
 		// ignore
@@ -86,7 +99,7 @@ func (m *Machine) RemoveWireguardKeys(ring int) error {
 		return err
 	}
 
-	err = m.RemoveFile("wg%v.key", ring)
+	err = m.RemoveFile(keyFile)
 	if os.IsNotExist(err) {
 		// ignore
 		err = nil
@@ -96,8 +109,13 @@ func (m *Machine) RemoveWireguardKeys(ring int) error {
 }
 
 // GetWireguardConfig reads a wgN.conf file
-func (m *Machine) GetWireguardConfig(ring int) (*wireguard.Config, error) {
+func (m *Machine) GetWireguardConfig(ringID rings.RingID) (*wireguard.Config, error) {
-	data, err := m.ReadFile("wg%v.conf", ring)
+	ring, err := AsWireguardInterfaceID(ringID)
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := m.ReadFile(ring.ConfFile())
 	if err != nil {
 		return nil, err
 	}
@@ -106,7 +124,7 @@ func (m *Machine) GetWireguardConfig(ring int) (*wireguard.Config, error) {
 	return wireguard.NewConfigFromReader(r)
 }
 
-func (m *Machine) tryApplyWireguardConfig(ring int) error {
+func (m *Machine) tryApplyWireguardConfig(ring rings.RingID) error {
 	wg, err := m.GetWireguardConfig(ring)
 	switch {
 	case os.IsNotExist(err):
@@ -118,21 +136,31 @@ func (m *Machine) tryApplyWireguardConfig(ring int) error {
 	}
 }
 
-func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
+func (m *Machine) applyWireguardConfigNode(ring rings.RingID, wg *wireguard.Config) error {
 	addr := wg.GetAddress()
-	zoneID, nodeID, ok := Rings[ring].Decode(addr)
+	if !core.IsZero(addr) {
-	if !ok {
+		regionID, zoneID, nodeID, ok := Rings[ring].Decode(addr)
-		return fmt.Errorf("%s: invalid address", addr)
+		if !ok {
-	}
+			return fmt.Errorf("%s: invalid address", addr)
+		}
 
-	if err := m.applyZoneNodeID(zoneID, nodeID); err != nil {
+		if err := m.applyZoneNodeID(regionID, zoneID, nodeID); err != nil {
-		return core.Wrapf(err, "%s: invalid address", addr)
+			return core.Wrap(err, "%s: invalid address", addr)
+		}
 	}
 
 	if err := m.applyWireguardInterfaceConfig(ring, wg.Interface); err != nil {
 		return core.Wrap(err, "interface")
 	}
 
+	return nil
+}
+
+func (m *Machine) applyWireguardConfig(ring rings.RingID, wg *wireguard.Config) error {
+	if err := m.applyWireguardConfigNode(ring, wg); err != nil {
+		return err
+	}
+
 	for _, peer := range wg.Peer {
 		err := m.applyWireguardPeerConfig(ring, peer)
 		switch {
@@ -142,7 +170,7 @@ func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
 				WithField("subsystem", "wireguard").
 				WithField("node", m.Name).
 				WithField("peer", peer.Endpoint.Host).
-				WithField("ring", ring).
+				WithField("ring", MustWireguardInterfaceID(ring)).
 				Print("ignoring unknown endpoint")
 		case err != nil:
 			return core.Wrap(err, "peer")
@@ -152,9 +180,9 @@ func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
 	return nil
 }
 
-func (m *Machine) getRingInfo(ring int) (*RingInfo, bool) {
+func (m *Machine) getRingInfo(ring rings.RingID) (*RingInfo, bool) {
 	for _, ri := range m.Rings {
-		if ri.Ring == ring {
+		if ri.RingID() == ring {
 			return ri, ri.Enabled
 		}
 	}
@@ -162,13 +190,13 @@ func (m *Machine) getRingInfo(ring int) (*RingInfo, bool) {
 	return nil, false
 }
 
-func (m *Machine) applyRingInfo(ring int, new *RingInfo) error {
+func (m *Machine) applyRingInfo(ring rings.RingID, new *RingInfo) error {
 	cur, _ := m.getRingInfo(ring)
 	if cur == nil {
 		// first, append
 		m.debug().
 			WithField("node", m.Name).
-			WithField("ring", ring).
+			WithField("ring", MustWireguardInterfaceID(ring)).
 			Print("found")
 		m.Rings = append(m.Rings, new)
 		return nil
@@ -178,9 +206,11 @@ func (m *Machine) applyRingInfo(ring int, new *RingInfo) error {
 	return cur.Merge(new)
 }
 
-func (m *Machine) applyWireguardInterfaceConfig(ring int, data wireguard.InterfaceConfig) error {
+func (m *Machine) applyWireguardInterfaceConfig(ring rings.RingID,
+	data wireguard.InterfaceConfig) error {
+	//
 	ri := &RingInfo{
-		Ring:    ring,
+		Ring:    MustWireguardInterfaceID(ring),
 		Enabled: true,
 		Keys: wireguard.KeyPair{
 			PrivateKey: data.PrivateKey,
@@ -190,7 +220,9 @@ func (m *Machine) applyWireguardInterfaceConfig(ring int, data wireguard.Interfa
 	return m.applyRingInfo(ring, ri)
 }
 
-func (m *Machine) applyWireguardPeerConfig(ring int, pc wireguard.PeerConfig) error {
+func (m *Machine) applyWireguardPeerConfig(ring rings.RingID,
+	pc wireguard.PeerConfig) error {
+	//
 	peer, found := m.getPeerByName(pc.Endpoint.Name())
 	switch {
 	case !found:
@@ -202,7 +234,7 @@ func (m *Machine) applyWireguardPeerConfig(ring int, pc wireguard.PeerConfig) er
 	default:
 		// apply RingInfo
 		ri := &RingInfo{
-			Ring:    ring,
+			Ring:    MustWireguardInterfaceID(ring),
 			Enabled: true,
 			Keys: wireguard.KeyPair{
 				PublicKey: pc.PublicKey,
@@ -213,27 +245,57 @@ func (m *Machine) applyWireguardPeerConfig(ring int, pc wireguard.PeerConfig) er
 	}
 }
 
-func (m *Machine) applyZoneNodeID(zoneID, nodeID int) error {
+func (m *Machine) applyZoneNodeID(regionID rings.RegionID,
+	zoneID rings.ZoneID, nodeID rings.NodeID) error {
+	//
 	switch {
-	case zoneID == 0:
+	case !regionID.Valid():
+		return fmt.Errorf("invalid %s", "regionID")
+	case !zoneID.Valid():
 		return fmt.Errorf("invalid %s", "zoneID")
-	case nodeID == 0:
+	case !nodeID.Valid():
 		return fmt.Errorf("invalid %s", "nodeID")
 	case m.ID != nodeID:
-		return fmt.Errorf("invalid %s: %v ≠ %v", "zoneID", m.ID, nodeID)
+		return fmt.Errorf("invalid %s: %v ≠ %v", "nodeID", m.ID, nodeID)
 	case m.zone.ID != 0 && m.zone.ID != zoneID:
 		return fmt.Errorf("invalid %s: %v ≠ %v", "zoneID", m.zone.ID, zoneID)
-	case m.zone.ID == 0:
+	case m.Region() != regionID:
-		m.zone.ID = zoneID
+		return fmt.Errorf("invalid %s: %v ≠ %v", "regionID", m.Region(), regionID)
-	}
+	default:
+		if m.zone.ID == 0 {
+			m.zone.ID = zoneID
+		}
 
+		return nil
+	}
+}
+
+func (m *Machine) setRingDefaults(ri *RingInfo) error {
+	if ri.Keys.PrivateKey.IsZero() {
+		m.info().
+			WithField("subsystem", "wireguard").
+			WithField("node", m.Name).
+			WithField("ring", ri.Ring).
+			Print("generating key pair")
+
+		kp, err := wireguard.NewKeyPair()
+		if err != nil {
+			return err
+		}
+		ri.Keys = kp
+	}
 	return nil
 }
 
 // RemoveWireguardConfig deletes wgN.conf from the machine's
 // config directory.
-func (m *Machine) RemoveWireguardConfig(ring int) error {
+func (m *Machine) RemoveWireguardConfig(ringID rings.RingID) error {
-	err := m.RemoveFile("wg%v.conf", ring)
+	ring, err := AsWireguardInterfaceID(ringID)
+	if err != nil {
+		return err
+	}
+
+	err = m.RemoveFile(ring.ConfFile())
 	if os.IsNotExist(err) {
 		err = nil
 	}
@@ -241,7 +303,12 @@ func (m *Machine) RemoveWireguardConfig(ring int) error {
 	return err
 }
 
-func (m *Machine) createRingInfo(ring int, enabled bool) (*RingInfo, error) {
+func (m *Machine) createRingInfo(ringID rings.RingID, enabled bool) (*RingInfo, error) {
+	ring, err := AsWireguardInterfaceID(ringID)
+	if err != nil {
+		return nil, err
+	}
+
 	keys, err := wireguard.NewKeyPair()
 	if err != nil {
 		return nil, err
@@ -253,7 +320,7 @@ func (m *Machine) createRingInfo(ring int, enabled bool) (*RingInfo, error) {
 		Keys:    keys,
 	}
 
-	err = m.applyRingInfo(ring, ri)
+	err = m.applyRingInfo(ringID, ri)
 	if err != nil {
 		return nil, err
 	}

pkg/cluster/machine_scan.go

@@ -3,11 +3,14 @@ package cluster
 import (
 	"context"
 	"net/netip"
+	"os"
 	"strconv"
 	"strings"
 	"time"
 
 	"darvaza.org/core"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 // LookupNetIP uses the DNS Resolver to get the public addresses associated
@@ -36,8 +39,8 @@ func (m *Machine) init() error {
 		return core.Wrap(err, m.Name)
 	}
 
-	for i := 0; i < RingsCount; i++ {
+	for _, ring := range Rings {
-		if err := m.tryReadWireguardKeys(i); err != nil {
+		if err := m.tryReadWireguardKeys(ring.ID); err != nil {
 			return core.Wrap(err, m.Name)
 		}
 	}
@@ -64,17 +67,57 @@ func (m *Machine) setID() error {
 		return err
 	}
 
-	m.ID = int(id)
+	m.ID = rings.NodeID(id)
 	return nil
 }
 
-func (m *Machine) scan(opts *ScanOptions) error {
+// scan is called once we know about all zones and machine names
-	for i := 0; i < RingsCount; i++ {
+func (m *Machine) scan(_ *ScanOptions) error {
-		if err := m.tryApplyWireguardConfig(i); err != nil {
+	for _, ring := range Rings {
+		if err := m.tryApplyWireguardConfig(ring.ID); err != nil {
 			m.error(err).
 				WithField("subsystem", "wireguard").
 				WithField("node", m.Name).
-				WithField("ring", i).
+				WithField("ring", MustWireguardInterfaceID(ring.ID)).
+				Print()
+			return err
+		}
+	}
+
+	return m.loadInactive()
+}
+
+func (m *Machine) loadInactive() error {
+	data, err := m.ReadLines("region")
+	switch {
+	case os.IsNotExist(err):
+		// no file
+		return nil
+	case err != nil:
+		// read error
+		return err
+	default:
+		// look for "none"
+		for _, r := range data {
+			switch r {
+			case "none":
+				m.Inactive = true
+			default:
+				m.Inactive = false
+			}
+		}
+		return nil
+	}
+}
+
+// scanWrapUp is called once all machines have been scanned
+func (m *Machine) scanWrapUp(opts *ScanOptions) error {
+	for _, ri := range m.Rings {
+		if err := m.setRingDefaults(ri); err != nil {
+			m.error(err).
+				WithField("subsystem", "wireguard").
+				WithField("node", m.Name).
+				WithField("ring", ri.Ring).
 				Print()
 			return err
 		}

pkg/cluster/regions.go

@@ -0,0 +1,431 @@
+package cluster
+
+import (
+	"bytes"
+	"path/filepath"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
+)
+
+var (
+	_ MachineIterator = (*Region)(nil)
+	_ ZoneIterator    = (*Region)(nil)
+
+	_ RegionIterator = (*Zone)(nil)
+	_ RegionIterator = (*Cluster)(nil)
+)
+
+// A RegionIterator is a set of Regions we can iterate on
+type RegionIterator interface {
+	ForEachRegion(func(*Region) bool)
+}
+
+// Region represents a group of zones geographically related
+type Region struct {
+	m     *Cluster
+	zones []*Zone
+
+	Name    string
+	ID      rings.RegionID `json:",omitempty" yaml:",omitempty"`
+	Cluster *string        `json:",omitempty" yaml:",omitempty"`
+	Regions []string       `json:",omitempty" yaml:",omitempty"`
+}
+
+// IsPrimary indicates the region is primary and corresponds
+// to a kubernetes cluster.
+func (r *Region) IsPrimary() bool {
+	return r != nil && r.Cluster != nil
+}
+
+// ForEachRegion calls a function for each Region of the cluster
+// until instructed to terminate the loop
+func (m *Cluster) ForEachRegion(fn func(r *Region) bool) {
+	for i := range m.Regions {
+		r := &m.Regions[i]
+		if fn(r) {
+			return
+		}
+	}
+}
+
+// ForEachMachine calls a function for each Machine in the region
+// until instructed to terminate the loop
+func (r *Region) ForEachMachine(fn func(*Machine) bool) {
+	r.ForEachZone(func(z *Zone) bool {
+		var term bool
+
+		z.ForEachMachine(func(p *Machine) bool {
+			if p.IsActive() {
+				term = fn(p)
+			}
+			return term
+		})
+
+		return term
+	})
+}
+
+// ForEachZone calls a function for each Zone in the region
+// until instructed to terminate the loop
+func (r *Region) ForEachZone(fn func(*Zone) bool) {
+	for _, p := range r.zones {
+		if fn(p) {
+			// terminate
+			return
+		}
+	}
+}
+
+func (m *Cluster) initRegions(_ *ScanOptions) error {
+	regions := make(map[string][]*Zone)
+
+	// first regions defined by zones
+	m.ForEachZone(func(z *Zone) bool {
+		SortRegions(z.Regions)
+		for _, region := range z.Regions {
+			regions[region] = append(regions[region], z)
+		}
+
+		return false
+	})
+
+	// bind first level regions and their zones
+	for name, zones := range regions {
+		m.setRegionZones(name, zones...)
+	}
+
+	// and combine zones to produce larger regions
+	for i := range m.Regions {
+		r := &m.Regions[i]
+		m.finishRegion(r)
+	}
+
+	m.sortRegions()
+	m.scanRegionID()
+	m.computeZonesRegion()
+	return nil
+}
+
+func (m *Cluster) setRegionZones(name string, zones ...*Zone) {
+	for i := range m.Regions {
+		r := &m.Regions[i]
+
+		if r.Name == name {
+			// found
+			r.m = m
+			r.zones = zones
+			return
+		}
+	}
+
+	// new
+	m.Regions = append(m.Regions, Region{
+		m:     m,
+		zones: zones,
+		Name:  name,
+	})
+}
+
+func (m *Cluster) setRegionClusterToken(name string, token string) error {
+	for i := range m.Regions {
+		r := &m.Regions[i]
+
+		if r.Name == name {
+			// found
+			r.Cluster = &token
+			return nil
+		}
+	}
+
+	// new
+	m.Regions = append(m.Regions, Region{
+		m:       m,
+		Name:    name,
+		Cluster: &token,
+	})
+	return nil
+}
+
+func (m *Cluster) appendRegionRegions(name string, subs ...string) {
+	for i := range m.Regions {
+		r := &m.Regions[i]
+
+		if name == r.Name {
+			// found
+			r.Regions = append(r.Regions, subs...)
+			return
+		}
+	}
+
+	// new
+	m.Regions = append(m.Regions, Region{
+		Name:    name,
+		Regions: subs,
+	})
+}
+
+// ForEachRegion calls a function on all regions this zone belongs to.
+func (z *Zone) ForEachRegion(fn func(*Region) bool) {
+	if fn == nil {
+		return
+	}
+
+	z.zones.ForEachRegion(func(r *Region) bool {
+		var match bool
+
+		r.ForEachZone(func(z2 *Zone) bool {
+			match = (z == z2)
+			return match
+		})
+
+		if match && fn(r) {
+			return true
+		}
+
+		return false
+	})
+}
+
+func (z *Zone) appendRegions(regions ...string) error {
+	for _, s := range regions {
+		// TODO: validate
+		z.debug().
+			WithField("zone", z.Name).
+			WithField("region", s).
+			Print("attached")
+
+		z.Regions = append(z.Regions, s)
+	}
+
+	return nil
+}
+
+func (m *Cluster) finishRegion(r *Region) {
+	if r.m != nil {
+		// ready
+		return
+	}
+
+	r.m = m
+	sub := []string{}
+	for _, name := range r.Regions {
+		r2, ok := m.getFinishRegion(name)
+		if !ok {
+			m.warn(nil).WithField("region", name).Print("unknown region")
+			continue
+		}
+
+		sub = append(sub, r2.Name)
+		r.zones = append(r.zones, r2.zones...)
+	}
+	r.Regions = sub
+}
+
+// revive:disable:cognitive-complexity
+func (m *Cluster) scanRegionID() {
+	// revive:enable:cognitive-complexity
+	var max rings.RegionID
+	var missing bool
+
+	// check IDs
+	ids := make(map[rings.RegionID]bool)
+	fn := func(r *Region) bool {
+		var term bool
+
+		switch {
+		case !r.IsPrimary():
+			// secondary, no ID.
+			r.ID = 0
+		case !r.ID.Valid():
+			// primary without ID
+			missing = true
+		case ids[r.ID]:
+			// duplicate
+			m.error(nil).WithField("region", r.Name).Print("duplicate ID")
+			missing = true
+			r.ID = 0
+		default:
+			ids[r.ID] = true
+
+			if r.ID > max {
+				max = r.ID
+			}
+		}
+
+		return term
+	}
+	m.ForEachRegion(fn)
+
+	if missing {
+		// assign missing IDs
+		fn := func(r *Region) bool {
+			var term bool
+
+			switch {
+			case !r.IsPrimary():
+				// ignore secondary
+			case r.ID.Valid():
+				// already has an ID
+			default:
+				r.ID = max + 1
+				max = r.ID
+			}
+
+			return term
+		}
+
+		m.ForEachRegion(fn)
+	}
+}
+
+func (m *Cluster) computeZonesRegion() {
+	fn := func(r *Region, z *Zone) {
+		if z.region != nil {
+			m.error(nil).
+				WithField("zone", z.Name).
+				WithField("region", []string{
+					z.region.Name,
+					r.Name,
+				}).
+				Print("zone in two regions")
+		} else {
+			z.region = r
+		}
+	}
+
+	m.ForEachRegion(func(r *Region) bool {
+		var term bool
+
+		if r.IsPrimary() {
+			r.ForEachZone(func(z *Zone) bool {
+				fn(r, z)
+				return term
+			})
+		}
+
+		return term
+	})
+}
+
+func (m *Cluster) getRegion(name string) (*Region, bool) {
+	for i := range m.Regions {
+		r := &m.Regions[i]
+		if name == r.Name {
+			return r, true
+		}
+	}
+
+	return nil, false
+}
+
+func (m *Cluster) getFinishRegion(name string) (*Region, bool) {
+	if r, ok := m.getRegion(name); ok {
+		m.finishRegion(r)
+		return r, true
+	}
+
+	return nil, false
+}
+
+// SyncRegions writes to the file system the regions this [Zone]
+// belongs to.
+func (z *Zone) SyncRegions() error {
+	err := z.syncZoneRegions()
+	if err == nil {
+		z.ForEachMachine(func(p *Machine) bool {
+			err = z.syncMachineRegions(p)
+			return err != nil
+		})
+	}
+
+	return err
+}
+
+func (*Zone) syncMachineRegions(p *Machine) error {
+	var err error
+
+	if p.IsActive() {
+		err = p.RemoveFile("region")
+	} else {
+		err = p.WriteStringFile("none\n", "region")
+	}
+
+	if err == nil {
+		err = p.RemoveFile(RegionClusterTokenFileName)
+	}
+
+	return err
+}
+
+func (z *Zone) syncZoneRegions() error {
+	name := filepath.Join(z.Name, ZoneRegionsFileName)
+
+	if len(z.Regions) > 0 {
+		var buf bytes.Buffer
+
+		for _, s := range z.Regions {
+			_, _ = buf.WriteString(s)
+			_, _ = buf.WriteRune('\n')
+		}
+
+		return z.zones.WriteStringFile(buf.String(), name)
+	}
+
+	return z.zones.RemoveFile(name)
+}
+
+// SyncRegions writes to the file system the regions covered
+// by this meta-region
+func (r *Region) SyncRegions() error {
+	if err := r.syncRegionsFile(); err != nil {
+		return err
+	}
+
+	return r.syncClusterFile()
+}
+
+func (r *Region) mkdir() error {
+	return r.m.MkdirAll(r.Name)
+}
+
+func (r *Region) syncRegionsFile() error {
+	var err error
+
+	name := filepath.Join(r.Name, ZoneRegionsFileName)
+
+	if len(r.Regions) == 0 {
+		err = r.m.RemoveFile(name)
+	} else if err = r.mkdir(); err == nil {
+		var buf bytes.Buffer
+
+		for _, s := range r.Regions {
+			_, _ = buf.WriteString(s)
+			_, _ = buf.WriteRune('\n')
+		}
+
+		err = r.m.WriteStringFile(buf.String(), name)
+	}
+
+	return err
+}
+
+func (r *Region) syncClusterFile() error {
+	var err error
+
+	name := filepath.Join(r.Name, RegionClusterTokenFileName)
+
+	if r.Cluster == nil {
+		err = r.m.RemoveFile(name)
+	} else if err = r.mkdir(); err == nil {
+		var buf bytes.Buffer
+
+		_, _ = buf.WriteString(*r.Cluster)
+		if buf.Len() > 0 {
+			_, _ = buf.WriteRune('\n')
+		}
+
+		err = r.m.WriteStringFile(buf.String(), name)
+	}
+
+	return err
+}

pkg/cluster/regions_utils.go

@@ -0,0 +1,41 @@
+package cluster
+
+import "sort"
+
+// SortRegions sorts regions. first by length those 3-character
+// or shorter, and then by length. It's mostly aimed at
+// supporting ISO-3166 order
+func SortRegions(regions []string) []string {
+	sort.Slice(regions, func(i, j int) bool {
+		r1, r2 := regions[i], regions[j]
+		return regionLess(r1, r2)
+	})
+
+	return regions
+}
+
+func regionLess(r1, r2 string) bool {
+	switch {
+	case len(r1) < 4:
+		switch {
+		case len(r1) < len(r2):
+			return true
+		case len(r1) > len(r2):
+			return false
+		default:
+			return r1 < r2
+		}
+	case len(r2) < 4:
+		return false
+	default:
+		return r1 < r2
+	}
+}
+
+func (m *Cluster) sortRegions() {
+	sort.Slice(m.Regions, func(i, j int) bool {
+		r1 := m.Regions[i].Name
+		r2 := m.Regions[j].Name
+		return regionLess(r1, r2)
+	})
+}

pkg/cluster/rings.go

@@ -3,32 +3,88 @@ package cluster
 import (
 	"fmt"
 	"io/fs"
+	"log"
 	"net/netip"
+	"strconv"
 
+	"git.jpi.io/amery/jpictl/pkg/rings"
 	"git.jpi.io/amery/jpictl/pkg/wireguard"
 )
 
 const (
-	// MaxZoneID indicates the highest ID allowed for a Zone
-	MaxZoneID = 0xf
-	// MaxNodeID indicates the highest Machine ID allowed within a Zone
-	MaxNodeID = 0xff - 1
-	// RingsCount indicates how many wireguard rings we have
-	RingsCount = 2
 	// RingZeroPort is the port wireguard uses for ring0
 	RingZeroPort = 51800
 	// RingOnePort is the port wireguard uses for ring1
 	RingOnePort = 51810
 )
 
+// WireguardInterfaceID represents the number in the `wg%v`
+// interface name.
+type WireguardInterfaceID uint
+
+// AsWireguardInterfaceID returns the [WireguardInterfaceID] for
+// a valid [rings.RingID].
+func AsWireguardInterfaceID(ring rings.RingID) (WireguardInterfaceID, error) {
+	switch ring {
+	case rings.RingZeroID:
+		return 0, nil
+	case rings.RingOneID:
+		return 1, nil
+	default:
+		return 0, ErrInvalidRing(ring)
+	}
+}
+
+// MustWireguardInterfaceID returns the [WireguardInterfaceID] for
+// a valid [rings.RingID], and panics if it's not.
+func MustWireguardInterfaceID(ring rings.RingID) WireguardInterfaceID {
+	id, err := AsWireguardInterfaceID(ring)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// RingID tells the [rings.RingID] of the [WireguardInterfaceID].
+func (wi WireguardInterfaceID) RingID() rings.RingID {
+	return rings.RingID(wi + 1)
+}
+
+// PubFile returns "wgN.pub"
+func (wi WireguardInterfaceID) PubFile() string {
+	return fmt.Sprintf("wg%v.pub", wi)
+}
+
+// KeyFile returns "wgN.key"
+func (wi WireguardInterfaceID) KeyFile() string {
+	return fmt.Sprintf("wg%v.key", wi)
+}
+
+// ConfFile returns "wgN.conf"
+func (wi WireguardInterfaceID) ConfFile() string {
+	return fmt.Sprintf("wg%v.conf", wi)
+}
+
+// Files returns all wgN.ext file names.
+func (wi WireguardInterfaceID) Files() (keyFile, pubFile, confFile string) {
+	prefix := "wg" + strconv.Itoa(int(wi))
+
+	return prefix + ".key", prefix + ".pub", prefix + ".conf"
+}
+
 // RingInfo contains represents the Wireguard endpoint details
 // for a Machine on a particular ring
 type RingInfo struct {
-	Ring    int
+	Ring    WireguardInterfaceID
 	Enabled bool
 	Keys    wireguard.KeyPair
 }
 
+// RingID returns the [rings.RingID] for this [RingInfo].
+func (ri *RingInfo) RingID() rings.RingID {
+	return rings.RingID(ri.Ring + 1)
+}
+
 // Merge attempts to combine two RingInfo structs
 func (ri *RingInfo) Merge(alter *RingInfo) error {
 	switch {
@@ -41,7 +97,7 @@ func (ri *RingInfo) Merge(alter *RingInfo) error {
 		// can't disable via Merge
 		return fmt.Errorf("invalid %s: %v → %v", "enabled", ri.Enabled, alter.Enabled)
 	case !canMergeKeyPairs(ri.Keys, alter.Keys):
-		// incompatible keypairs
+		// incompatible key pairs
 		return fmt.Errorf("invalid %s: %s ≠ %s", "keys", ri.Keys, alter.Keys)
 	}
 
@@ -54,7 +110,7 @@ func (ri *RingInfo) unsafeMerge(alter *RingInfo) error {
 		ri.Enabled = true
 	}
 
-	// fill the gaps on our keypair
+	// fill the gaps on our key pair
 	if ri.Keys.PrivateKey.IsZero() {
 		ri.Keys.PrivateKey = alter.Keys.PrivateKey
 	}
@@ -79,108 +135,34 @@ func canMergeKeyPairs(p1, p2 wireguard.KeyPair) bool {
 // RingAddressEncoder provides encoder/decoder access for a particular
 // Wireguard ring
 type RingAddressEncoder struct {
-	ID     int
+	ID     rings.RingID
 	Port   uint16
-	Encode func(zoneID, nodeID int) (netip.Addr, bool)
+	Encode func(rings.RegionID, rings.ZoneID, rings.NodeID) (netip.Addr, error)
-	Decode func(addr netip.Addr) (zoneID, nodeID int, ok bool)
+	Decode func(addr netip.Addr) (rings.RegionID, rings.ZoneID, rings.NodeID, bool)
 }
 
 var (
 	// RingZero is a wg0 address encoder/decoder
 	RingZero = RingAddressEncoder{
-		ID:     0,
+		ID:     rings.RingZeroID,
 		Port:   RingZeroPort,
-		Decode: ParseRingZeroAddress,
+		Decode: rings.DecodeRingZeroAddress,
-		Encode: RingZeroAddress,
+		Encode: rings.RingZeroAddress,
 	}
 	// RingOne is a wg1 address encoder/decoder
 	RingOne = RingAddressEncoder{
-		ID:     1,
+		ID:     rings.RingOneID,
 		Port:   RingOnePort,
-		Decode: ParseRingOneAddress,
+		Decode: rings.DecodeRingOneAddress,
-		Encode: RingOneAddress,
+		Encode: rings.RingOneAddress,
 	}
 	// Rings provides indexed access to the ring address encoders
-	Rings = [RingsCount]RingAddressEncoder{
+	Rings = []RingAddressEncoder{
 		RingZero,
 		RingOne,
 	}
 )
 
-// ValidZoneID checks if the given zoneID is a valid 4 bit zone number.
-//
-// 0 is reserved, and only allowed when composing CIDRs.
-func ValidZoneID(zoneID int) bool {
-	switch {
-	case zoneID < 0 || zoneID > MaxZoneID:
-		return false
-	default:
-		return true
-	}
-}
-
-// ValidNodeID checks if the given nodeID is a valid 8 bit number.
-// nodeID is unique within a Zone.
-// 0 is reserved, and only allowed when composing CIDRs.
-func ValidNodeID(nodeID int) bool {
-	switch {
-	case nodeID < 0 || nodeID > MaxNodeID:
-		return false
-	default:
-		return true
-	}
-}
-
-// ParseRingZeroAddress extracts zone and node ID from a wg0 [netip.Addr]
-// wg0 addresses are of the form `10.0.{{zoneID}}.{{nodeID}}`
-func ParseRingZeroAddress(addr netip.Addr) (zoneID int, nodeID int, ok bool) {
-	if addr.IsValid() {
-		a4 := addr.As4()
-
-		if a4[0] == 10 && a4[1] == 0 {
-			return int(a4[2]), int(a4[3]), true
-		}
-	}
-	return 0, 0, false
-}
-
-// RingZeroAddress returns a wg0 IP address
-func RingZeroAddress(zoneID, nodeID int) (netip.Addr, bool) {
-	switch {
-	case !ValidZoneID(zoneID) || !ValidNodeID(nodeID):
-		return netip.Addr{}, false
-	default:
-		a4 := [4]uint8{10, 0, uint8(zoneID), uint8(nodeID)}
-		return netip.AddrFrom4(a4), true
-	}
-}
-
-// ParseRingOneAddress extracts zone and node ID from a wg1 [netip.Addr]
-// wg1 addresses are of the form `10.{{zoneID << 4}}.{{nodeID}}`
-func ParseRingOneAddress(addr netip.Addr) (zoneID int, nodeID int, ok bool) {
-	if addr.IsValid() {
-		a4 := addr.As4()
-
-		if a4[0] == 10 && a4[2] == 0 {
-			zoneID = int(a4[1] >> 4)
-			nodeID = int(a4[3])
-			return zoneID, nodeID, true
-		}
-	}
-	return 0, 0, false
-}
-
-// RingOneAddress returns a wg1 IP address
-func RingOneAddress(zoneID, nodeID int) (netip.Addr, bool) {
-	switch {
-	case !ValidZoneID(zoneID) || !ValidNodeID(nodeID):
-		return netip.Addr{}, false
-	default:
-		a4 := [4]uint8{10, uint8(zoneID << 4), 0, uint8(nodeID)}
-		return netip.AddrFrom4(a4), true
-	}
-}
-
 var (
 	_ MachineIterator = (*Ring)(nil)
 	_ ZoneIterator    = (*Ring)(nil)
@@ -203,14 +185,15 @@ func (r *Ring) AddPeer(p *Machine) bool {
 
 	nodeID := p.ID
 	zoneID := p.Zone()
-	addr, _ := r.Encode(zoneID, nodeID)
+	regionID := p.Region()
+	addr, _ := r.Encode(regionID, zoneID, nodeID)
 
 	rp := &RingPeer{
 		Node:       p,
 		Address:    addr,
 		PrivateKey: ri.Keys.PrivateKey,
 		PeerConfig: wireguard.PeerConfig{
-			Name:      fmt.Sprintf("%s-%v", p.Name, r.ID),
+			Name:      fmt.Sprintf("%s-%v", p.Name, ri.Ring),
 			PublicKey: ri.Keys.PublicKey,
 			Endpoint: wireguard.EndpointAddress{
 				Host: p.FullName(),
@@ -220,7 +203,7 @@ func (r *Ring) AddPeer(p *Machine) bool {
 	}
 
 	switch {
-	case r.ID == 0:
+	case r.ID == rings.RingZeroID:
 		r.setRingZeroAllowedIPs(rp)
 	case p.IsGateway():
 		r.setRingOneGatewayAllowedIPs(rp)
@@ -233,42 +216,52 @@ func (r *Ring) AddPeer(p *Machine) bool {
 }
 
 func (r *Ring) setRingZeroAllowedIPs(rp *RingPeer) {
-	zoneID, _, _ := r.Decode(rp.Address)
+	regionID, zoneID, _, _ := r.Decode(rp.Address)
 
 	// everyone on ring0 is a gateway to ring1
-	addr, _ := RingOneAddress(zoneID, 0)
+	subnet, _ := rings.RingOnePrefix(regionID, zoneID)
-	rp.AllowCIDR(addr, 12)
+	rp.AllowSubnet(subnet)
 
 	// peer
 	rp.AllowCIDR(rp.Address, 32)
 }
 
 func (r *Ring) setRingOneGatewayAllowedIPs(rp *RingPeer) {
-	zoneID, _, _ := r.Decode(rp.Address)
+	regionID, zoneID, _, _ := r.Decode(rp.Address)
 
 	// peer
 	rp.AllowCIDR(rp.Address, 32)
 
+	log.Println(rp.Node.Name, "0:", rp.Address, regionID, zoneID)
+
 	// ring1 gateways connect to all other ring1 networks
 	r.ForEachZone(func(z *Zone) bool {
-		if z.ID != zoneID {
+		log.Println(rp.Node.Name, "1:", z.Name, z.RegionID(), z.ID)
-			addr, _ := r.Encode(z.ID, 0)
+
-			rp.AllowCIDR(addr, 12)
+		if !z.Is(regionID, zoneID) {
+			subnet := z.RingOnePrefix()
+			rp.AllowSubnet(subnet)
+			log.Println(rp.Node.Name, "1.1:", rp.PeerConfig.AllowedIPs)
 		}
 		return false
 	})
 
 	// ring1 gateways also connect to all ring0 addresses
 	r.ForEachZone(func(z *Zone) bool {
+		log.Println(rp.Node.Name, "2:", z.Name, z.RegionID(), z.ID)
 		z.ForEachMachine(func(p *Machine) bool {
+			log.Println(rp.Node.Name, "2.1:", p.Name, p.IsGateway())
 			if p.IsGateway() {
-				addr, _ := RingZeroAddress(z.ID, p.ID)
+				addr, _ := p.RingZeroAddress()
 				rp.AllowCIDR(addr, 32)
+				log.Println(rp.Node.Name, "2.2:", rp.PeerConfig.AllowedIPs)
 			}
 			return false
 		})
 		return false
 	})
+
+	log.Println(rp.Node.Name, "3:", rp.PeerConfig.AllowedIPs)
 }
 
 func (*Ring) setRingOneNodeAllowedIPs(rp *RingPeer) {
@@ -329,15 +322,29 @@ type RingPeer struct {
 
 // AllowCIDR allows an IP range via this peer
 func (rp *RingPeer) AllowCIDR(addr netip.Addr, bits int) {
-	cidr := netip.PrefixFrom(addr, bits)
+	rp.AllowSubnet(netip.PrefixFrom(addr, bits))
-	rp.PeerConfig.AllowedIPs = append(rp.PeerConfig.AllowedIPs, cidr)
+}
+
+// AllowSubnet allows an IP range via this peer
+func (rp *RingPeer) AllowSubnet(subnet netip.Prefix) {
+	rp.PeerConfig.AllowedIPs = append(rp.PeerConfig.AllowedIPs, subnet)
 }
 
 // NewRing composes a new Ring for Wireguard setup
-func NewRing(z ZoneIterator, m MachineIterator, ring int) (*Ring, error) {
+func NewRing(z ZoneIterator, m MachineIterator, ringID rings.RingID) (*Ring, error) {
-	r := &Ring{
+	var r *Ring
-		RingAddressEncoder: Rings[ring],
+	for _, ring := range Rings {
-		ZoneIterator:       z,
+		if ringID == ring.ID {
+			r = &Ring{
+				RingAddressEncoder: ring,
+				ZoneIterator:       z,
+			}
+			break
+		}
+	}
+
+	if r == nil {
+		return nil, ErrInvalidRing(ringID)
 	}
 
 	m.ForEachMachine(func(p *Machine) bool {

pkg/cluster/sync.go

@@ -3,8 +3,10 @@ package cluster
 // SyncAll updates all config files
 func (m *Cluster) SyncAll() error {
 	for _, fn := range []func() error{
+		m.SyncMkdirAll,
 		m.SyncAllWireguard,
 		m.SyncAllCeph,
+		m.SyncAllRegions,
 		m.WriteHosts,
 	} {
 		if err := fn(); err != nil {
@@ -15,17 +17,31 @@ func (m *Cluster) SyncAll() error {
 	return nil
 }
 
+// SyncMkdirAll creates the directories needed to store files
+// required to represent the cluster.
+func (m *Cluster) SyncMkdirAll() error {
+	err := m.MkdirAll(".")
+	if err == nil {
+		m.ForEachMachine(func(p *Machine) bool {
+			err = p.MkdirAll(".")
+			return err != nil
+		})
+	}
+
+	return err
+}
+
 // SyncAllWireguard updates all wireguard config files
 func (m *Cluster) SyncAllWireguard() error {
 	var err error
 
-	for ring := 0; ring < RingsCount; ring++ {
+	for _, ring := range Rings {
-		err = m.WriteWireguardKeys(ring)
+		err = m.WriteWireguardKeys(ring.ID)
 		if err != nil {
 			return err
 		}
 
-		err = m.SyncWireguardConfig(ring)
+		err = m.SyncWireguardConfig(ring.ID)
 		if err != nil {
 			return err
 		}
@@ -43,3 +59,24 @@ func (m *Cluster) SyncAllCeph() error {
 
 	return m.WriteCephConfig(cfg)
 }
+
+// SyncAllRegions rewrites all region data
+func (m *Cluster) SyncAllRegions() error {
+	var err error
+
+	m.ForEachZone(func(z *Zone) bool {
+		err := z.SyncRegions()
+		return err != nil
+	})
+
+	if err != nil {
+		return err
+	}
+
+	m.ForEachRegion(func(r *Region) bool {
+		err = r.SyncRegions()
+		return err != nil
+	})
+
+	return err
+}

pkg/cluster/wireguard.go

@@ -3,6 +3,8 @@ package cluster
 import (
 	"io/fs"
 	"os"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 var (
@@ -26,22 +28,22 @@ var (
 // A WireguardConfigPruner deletes wgN.conf on all machines under
 // its scope with the specified ring disabled
 type WireguardConfigPruner interface {
-	PruneWireguardConfig(ring int) error
+	PruneWireguardConfig(ring rings.RingID) error
 }
 
 // PruneWireguardConfig removes wgN.conf files of machines with
 // the corresponding ring disabled on all zones
-func (m *Cluster) PruneWireguardConfig(ring int) error {
+func (m *Cluster) PruneWireguardConfig(ring rings.RingID) error {
 	return pruneWireguardConfig(m, ring)
 }
 
 // PruneWireguardConfig removes wgN.conf files of machines with
 // the corresponding ring disabled.
-func (z *Zone) PruneWireguardConfig(ring int) error {
+func (z *Zone) PruneWireguardConfig(ring rings.RingID) error {
 	return pruneWireguardConfig(z, ring)
 }
 
-func pruneWireguardConfig(m MachineIterator, ring int) error {
+func pruneWireguardConfig(m MachineIterator, ring rings.RingID) error {
 	var err error
 
 	m.ForEachMachine(func(p *Machine) bool {
@@ -59,7 +61,7 @@ func pruneWireguardConfig(m MachineIterator, ring int) error {
 
 // PruneWireguardConfig deletes the wgN.conf file if its
 // presence on the ring is disabled
-func (m *Machine) PruneWireguardConfig(ring int) error {
+func (m *Machine) PruneWireguardConfig(ring rings.RingID) error {
 	_, ok := m.getRingInfo(ring)
 	if !ok {
 		return m.RemoveWireguardConfig(ring)
@@ -71,16 +73,16 @@ func (m *Machine) PruneWireguardConfig(ring int) error {
 // A WireguardConfigWriter rewrites all wgN.conf on all machines under
 // its scope attached to that ring
 type WireguardConfigWriter interface {
-	WriteWireguardConfig(ring int) error
+	WriteWireguardConfig(ring rings.RingID) error
 }
 
 // WriteWireguardConfig rewrites all wgN.conf on all machines
 // attached to that ring
-func (m *Cluster) WriteWireguardConfig(ring int) error {
+func (m *Cluster) WriteWireguardConfig(ring rings.RingID) error {
 	switch ring {
-	case 0:
+	case rings.RingZeroID:
 		return writeWireguardConfig(m, m, ring)
-	case 1:
+	case rings.RingOneID:
 		var err error
 		m.ForEachZone(func(z *Zone) bool {
 			err = writeWireguardConfig(m, z, ring)
@@ -88,24 +90,24 @@ func (m *Cluster) WriteWireguardConfig(ring int) error {
 		})
 		return err
 	default:
-		return fs.ErrInvalid
+		return ErrInvalidRing(ring)
 	}
 }
 
 // WriteWireguardConfig rewrites all wgN.conf on all machines
 // on the Zone attached to that ring
-func (z *Zone) WriteWireguardConfig(ring int) error {
+func (z *Zone) WriteWireguardConfig(ring rings.RingID) error {
 	switch ring {
-	case 0:
+	case rings.RingZeroID:
 		return writeWireguardConfig(z.zones, z.zones, ring)
-	case 1:
+	case rings.RingOneID:
 		return writeWireguardConfig(z.zones, z, ring)
 	default:
-		return fs.ErrInvalid
+		return ErrInvalidRing(ring)
 	}
 }
 
-func writeWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
+func writeWireguardConfig(z ZoneIterator, m MachineIterator, ring rings.RingID) error {
 	r, err := NewRing(z, m, ring)
 	if err != nil {
 		return err
@@ -121,7 +123,7 @@ func writeWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
 
 // WriteWireguardConfig rewrites the wgN.conf file of this Machine
 // if enabled
-func (m *Machine) WriteWireguardConfig(ring int) error {
+func (m *Machine) WriteWireguardConfig(ring rings.RingID) error {
 	r, err := NewRing(m.zone.zones, m.zone, ring)
 	if err != nil {
 		return err
@@ -131,12 +133,17 @@ func (m *Machine) WriteWireguardConfig(ring int) error {
 }
 
 func (m *Machine) writeWireguardRingConfig(r *Ring) error {
+	ring, err := AsWireguardInterfaceID(r.ID)
+	if err != nil {
+		return err
+	}
+
 	wg, err := r.ExportConfig(m)
 	if err != nil {
 		return nil
 	}
 
-	f, err := m.CreateTruncFile("wg%v.conf", r.ID)
+	f, err := m.CreateTruncFile(ring.ConfFile())
 	if err != nil {
 		return err
 	}
@@ -149,16 +156,16 @@ func (m *Machine) writeWireguardRingConfig(r *Ring) error {
 // A WireguardConfigSyncer updates all wgN.conf on all machines under
 // its scope reflecting the state of the ring
 type WireguardConfigSyncer interface {
-	SyncWireguardConfig(ring int) error
+	SyncWireguardConfig(ring rings.RingID) error
 }
 
 // SyncWireguardConfig updates all wgN.conf files for the specified
 // ring
-func (m *Cluster) SyncWireguardConfig(ring int) error {
+func (m *Cluster) SyncWireguardConfig(ring rings.RingID) error {
 	switch ring {
-	case 0:
+	case rings.RingZeroID:
 		return syncWireguardConfig(m, m, ring)
-	case 1:
+	case rings.RingOneID:
 		var err error
 		m.ForEachZone(func(z *Zone) bool {
 			err = syncWireguardConfig(m, z, ring)
@@ -166,24 +173,24 @@ func (m *Cluster) SyncWireguardConfig(ring int) error {
 		})
 		return err
 	default:
-		return fs.ErrInvalid
+		return ErrInvalidRing(ring)
 	}
 }
 
 // SyncWireguardConfig updates all wgN.conf files for the specified
 // ring
-func (z *Zone) SyncWireguardConfig(ring int) error {
+func (z *Zone) SyncWireguardConfig(ring rings.RingID) error {
 	switch ring {
-	case 0:
+	case rings.RingZeroID:
 		return syncWireguardConfig(z.zones, z.zones, ring)
-	case 1:
+	case rings.RingOneID:
 		return syncWireguardConfig(z.zones, z, ring)
 	default:
-		return fs.ErrInvalid
+		return ErrInvalidRing(ring)
 	}
 }
 
-func syncWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
+func syncWireguardConfig(z ZoneIterator, m MachineIterator, ring rings.RingID) error {
 	r, err := NewRing(z, m, ring)
 	if err != nil {
 		return err
@@ -203,27 +210,27 @@ func syncWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
 
 // SyncWireguardConfig updates all wgN.conf files for the specified
 // ring
-func (m *Machine) SyncWireguardConfig(ring int) error {
+func (m *Machine) SyncWireguardConfig(ring rings.RingID) error {
 	return m.zone.SyncWireguardConfig(ring)
 }
 
 // A WireguardKeysWriter writes the Wireguard Keys for all machines
 // under its scope for the specified ring
 type WireguardKeysWriter interface {
-	WriteWireguardKeys(ring int) error
+	WriteWireguardKeys(ring rings.RingID) error
 }
 
 // WriteWireguardKeys rewrites all wgN.{key,pub} files
-func (m *Cluster) WriteWireguardKeys(ring int) error {
+func (m *Cluster) WriteWireguardKeys(ring rings.RingID) error {
 	return writeWireguardKeys(m, ring)
 }
 
 // WriteWireguardKeys rewrites all wgN.{key,pub} files on this zone
-func (z *Zone) WriteWireguardKeys(ring int) error {
+func (z *Zone) WriteWireguardKeys(ring rings.RingID) error {
 	return writeWireguardKeys(z, ring)
 }
 
-func writeWireguardKeys(m MachineIterator, ring int) error {
+func writeWireguardKeys(m MachineIterator, ring rings.RingID) error {
 	var err error
 
 	m.ForEachMachine(func(p *Machine) bool {
@@ -240,12 +247,12 @@ func writeWireguardKeys(m MachineIterator, ring int) error {
 }
 
 // WriteWireguardKeys writes the wgN.key/wgN.pub files
-func (m *Machine) WriteWireguardKeys(ring int) error {
+func (m *Machine) WriteWireguardKeys(ringID rings.RingID) error {
 	var err error
 	var key, pub string
 	var ri *RingInfo
 
-	ri, _ = m.getRingInfo(ring)
+	ri, _ = m.getRingInfo(ringID)
 	if ri != nil {
 		key = ri.Keys.PrivateKey.String()
 		pub = ri.Keys.PublicKey.String()
@@ -258,12 +265,13 @@ func (m *Machine) WriteWireguardKeys(ring int) error {
 		pub = ri.Keys.PrivateKey.Public().String()
 	}
 
-	err = m.WriteStringFile(key+"\n", "wg%v.key", ring)
+	keyFile, pubFile, _ := ri.Ring.Files()
+	err = m.WriteStringFile(key+"\n", keyFile)
 	if err != nil {
 		return err
 	}
 
-	err = m.WriteStringFile(pub+"\n", "wg%v.pub", ring)
+	err = m.WriteStringFile(pub+"\n", pubFile)
 	if err != nil {
 		return err
 	}

pkg/cluster/zones.go

@@ -2,6 +2,8 @@ package cluster
 
 import (
 	"io/fs"
+
+	"git.jpi.io/amery/jpictl/pkg/rings"
 )
 
 var (
@@ -17,10 +19,12 @@ type ZoneIterator interface {
 // affinity.
 type Zone struct {
 	zones  *Cluster
+	region *Region
 	logger `json:"-" yaml:"-"`
 
-	ID   int
+	ID      rings.ZoneID
-	Name string
+	Name    string
+	Regions []string `json:",omitempty" yaml:",omitempty"`
 
 	Machines
 }
@@ -30,7 +34,7 @@ func (z *Zone) String() string {
 }
 
 // SetGateway configures a machine to be the zone's ring0 gateway
-func (z *Zone) SetGateway(gatewayID int, enabled bool) error {
+func (z *Zone) SetGateway(gatewayID rings.NodeID, enabled bool) error {
 	var err error
 	var found bool
 
@@ -55,8 +59,8 @@ func (z *Zone) SetGateway(gatewayID int, enabled bool) error {
 }
 
 // GatewayIDs returns the list of IDs of machines that act as ring0 gateways
-func (z *Zone) GatewayIDs() ([]int, int) {
+func (z *Zone) GatewayIDs() ([]rings.NodeID, int) {
-	var out []int
+	var out []rings.NodeID
 	z.ForEachMachine(func(p *Machine) bool {
 		if p.IsGateway() {
 			out = append(out, p.ID)
@@ -66,3 +70,38 @@ func (z *Zone) GatewayIDs() ([]int, int) {
 
 	return out, len(out)
 }
+
+// RegionID returns the primary [Region] of a [Zone].
+func (z *Zone) RegionID() rings.RegionID {
+	if z != nil && z.region != nil {
+		return z.region.ID
+	}
+	return 0
+}
+
+// Is checks if the given [rings.RegionID] and [rings.ZoneID] match
+// the [Zone].
+func (z *Zone) Is(regionID rings.RegionID, zoneID rings.ZoneID) bool {
+	switch {
+	case z.ID != zoneID:
+		return false
+	case z.RegionID() != regionID:
+		return false
+	default:
+		return true
+	}
+}
+
+// Eq checks if two [Zone]s are the same.
+func (z *Zone) Eq(z2 *Zone) bool {
+	switch {
+	case z == nil, z2 == nil:
+		return false
+	case z.ID != z2.ID:
+		return false
+	case z.RegionID() != z2.RegionID():
+		return false
+	default:
+		return true
+	}
+}

pkg/dns/add.go

@@ -0,0 +1,69 @@
+package dns
+
+import (
+	"context"
+	"net/netip"
+	"os"
+	"time"
+
+	"darvaza.org/core"
+	"github.com/libdns/libdns"
+)
+
+// Add adds a machine to the DNS records
+func (mgr *Manager) Add(ctx context.Context, name string, addrs ...netip.Addr) error {
+	// TODO: validate name
+
+	cur, err := mgr.GetRecords(ctx, name)
+	if err != nil {
+		return core.Wrap(err, "GetRecords")
+	}
+
+	// merge []SyncAddr for name
+	s := mgr.asSyncRecordsMap(cur)[name+mgr.suffix]
+	for _, addr := range addrs {
+		s = AppendSyncAddr(s, addr)
+	}
+
+	return mgr.addSyncAddr(ctx, name, s)
+}
+
+func (mgr *Manager) addSyncAddr(ctx context.Context, name string, s []SyncAddr) error {
+	var recs []libdns.Record
+
+	for _, a := range s {
+		recs = append(recs, libdns.Record{
+			ID:    a.ID,
+			Name:  name + mgr.suffix,
+			Type:  core.IIf(a.Addr.Is6(), "AAAA", "A"),
+			TTL:   time.Second,
+			Value: a.Addr.String(),
+		})
+	}
+
+	SortRecords(recs)
+	err := writeRecords(recs, os.Stdout)
+	if err != nil {
+		return err
+	}
+
+	_, err = mgr.p.SetRecords(ctx, mgr.domain, recs)
+	return err
+}
+
+// AppendSyncAddr appends a [netip.Addr] to a [SyncAddr] slice
+// if the address is new.
+func AppendSyncAddr(s []SyncAddr, addr netip.Addr) []SyncAddr {
+	for _, se := range s {
+		if se.Addr.Compare(addr) == 0 {
+			// found
+			return s
+		}
+	}
+
+	s = append(s, SyncAddr{
+		Addr: addr,
+		TTL:  time.Second,
+	})
+	return s
+}

pkg/dns/dns.go

@@ -0,0 +1,38 @@
+// Package dns manages DNS entries for the cluster
+package dns
+
+import (
+	"fmt"
+	"net/netip"
+)
+
+// Zone represents a set of hosts with high affinity
+type Zone struct {
+	Name string
+
+	Hosts map[int]*Host
+}
+
+func (z *Zone) String() string {
+	if z == nil {
+		return "undetermined"
+	}
+	return z.Name
+}
+
+// Host represents a member of the cluster
+type Host struct {
+	zone *Zone
+
+	ID     int
+	Active bool
+	Addrs  []netip.Addr
+}
+
+func (p *Host) String() string {
+	if p == nil {
+		return "undetermined"
+	}
+
+	return fmt.Sprintf("%s-%v", p.zone, p.ID)
+}

pkg/dns/error.go

@@ -0,0 +1,12 @@
+package dns
+
+import "errors"
+
+var (
+	// ErrNoDNSProvider indicates a [libdns.Provider] wasn't assigned
+	// to the [Manager]
+	ErrNoDNSProvider = errors.New("dns provider not specified")
+
+	// ErrNoDomain indicates a domain wasn't specified
+	ErrNoDomain = errors.New("domain not specified")
+)

pkg/dns/manager.go

@@ -0,0 +1,230 @@
+package dns
+
+import (
+	"context"
+	"io/fs"
+	"net/netip"
+	"strings"
+
+	"darvaza.org/core"
+	"darvaza.org/slog"
+	"github.com/libdns/libdns"
+	"golang.org/x/net/publicsuffix"
+
+	"git.jpi.io/amery/jpictl/pkg/cluster"
+)
+
+// Manager is a DNS Manager instance
+type Manager struct {
+	domain  string
+	suffix  string
+	zones   map[string]*Zone
+	regions map[string][]string
+
+	p Provider
+	l slog.Logger
+}
+
+// ManagerOption configures a Manager
+type ManagerOption func(*Manager) error
+
+func newErrorManagerOption(err error, hint string) ManagerOption {
+	return func(*Manager) error {
+		return core.Wrap(err, hint)
+	}
+}
+
+// WithProvider attaches a libdns Provider to the Manager
+func WithProvider(p Provider) ManagerOption {
+	var err error
+
+	if p == nil {
+		p, err = DefaultDNSProvider()
+	}
+
+	if err != nil {
+		return newErrorManagerOption(err, "WithProvider")
+	}
+
+	return func(mgr *Manager) error {
+		mgr.p = p
+		return nil
+	}
+}
+
+// WithLogger attaches a logger to the Manager
+func WithLogger(log slog.Logger) ManagerOption {
+	if log == nil {
+		log = cluster.DefaultLogger()
+	}
+
+	return func(mgr *Manager) error {
+		mgr.l = log
+		return nil
+	}
+}
+
+func (mgr *Manager) setDefaults() error {
+	var opts []ManagerOption
+
+	if mgr.l == nil {
+		opts = append(opts, WithLogger(nil))
+	}
+
+	if mgr.domain == "" || mgr.suffix == "" {
+		return ErrNoDomain
+	}
+
+	for _, opt := range opts {
+		if err := opt(mgr); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// WithDomain specifies where the manager operates
+func WithDomain(domain string) ManagerOption {
+	base, err := publicsuffix.EffectiveTLDPlusOne(domain)
+	if err != nil {
+		return newErrorManagerOption(err, "publicsuffix")
+	}
+
+	suffix := strings.TrimSuffix(domain, base)
+	if suffix != "" {
+		suffix = "." + suffix[:len(suffix)-1]
+	}
+
+	return func(mgr *Manager) error {
+		mgr.domain = base
+		mgr.suffix = suffix
+		return nil
+	}
+}
+
+// NewManager creates a DNS manager with the
+func NewManager(opts ...ManagerOption) (*Manager, error) {
+	mgr := &Manager{
+		zones:   make(map[string]*Zone),
+		regions: make(map[string][]string),
+	}
+
+	for _, opt := range opts {
+		if err := opt(mgr); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := mgr.setDefaults(); err != nil {
+		return nil, err
+	}
+	return mgr, nil
+}
+
+// GetRecords pulls all the address records on DNS for our domain,
+// optionally only those matching the given names.
+func (mgr *Manager) GetRecords(ctx context.Context, names ...string) ([]libdns.Record, error) {
+	if mgr.p == nil {
+		return nil, ErrNoDNSProvider
+	}
+
+	recs, err := mgr.p.GetRecords(ctx, mgr.domain)
+	switch {
+	case err != nil:
+		// failed
+		return nil, err
+	case len(recs) == 0:
+		// empty
+		return []libdns.Record{}, nil
+	case mgr.suffix == "" && len(names) == 0:
+		// unfiltered
+		return recs, nil
+	default:
+		// filtered
+		recs = mgr.filterRecords(recs, names...)
+		return recs, nil
+	}
+}
+
+func (mgr *Manager) filterRecords(recs []libdns.Record, names ...string) []libdns.Record {
+	out := make([]libdns.Record, 0, len(recs))
+	for _, rr := range recs {
+		name, ok := mgr.matchSuffix(rr)
+		switch {
+		case !ok:
+			// skip, wrong subdomain
+			continue
+		case len(names) == 0:
+			// unfiltered, take it
+		case !core.SliceContains(names, name):
+			// skip, not one of the requested names
+			continue
+		}
+
+		out = append(out, rr)
+	}
+
+	return out
+}
+
+func (mgr *Manager) matchSuffix(rr libdns.Record) (string, bool) {
+	if mgr.suffix == "" {
+		// no suffix
+		return rr.Name, true
+	}
+
+	// remove suffix
+	return strings.CutSuffix(rr.Name, mgr.suffix)
+}
+
+// AddHost registers a host
+func (mgr *Manager) AddHost(_ context.Context, zone string, id int,
+	active bool, addrs ...netip.Addr) error {
+	//
+	if zone == "" || id <= 0 {
+		return fs.ErrInvalid
+	}
+
+	z, ok := mgr.zones[zone]
+	if !ok {
+		z = &Zone{
+			Name:  zone,
+			Hosts: make(map[int]*Host),
+		}
+
+		mgr.zones[zone] = z
+	}
+
+	p := &Host{
+		zone:   z,
+		ID:     id,
+		Active: active,
+		Addrs:  SortAddrSlice(addrs),
+	}
+	z.Hosts[id] = p
+
+	if log, ok := mgr.l.Debug().WithEnabled(); ok {
+		log.WithField("subsystem", "dns").
+			WithField("zone", zone).
+			WithField("host", p.String()).
+			WithField("active", active).
+			Print()
+	}
+
+	return nil
+}
+
+// AddRegion specifies a new region and the zones it contains
+func (mgr *Manager) AddRegion(_ context.Context, region string, zones ...string) error {
+	mgr.regions[region] = append(mgr.regions[region], zones...)
+
+	if log, ok := mgr.l.Debug().WithEnabled(); ok {
+		for _, zoneName := range zones {
+			log.WithField("subsystem", "dns").
+				WithField("region", region).
+				WithField("zone", zoneName).Print()
+		}
+	}
+
+	return nil
+}

pkg/dns/provider.go

@@ -0,0 +1,38 @@
+package dns
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/libdns/cloudflare"
+	"github.com/libdns/libdns"
+)
+
+const (
+	// CloudflareAPIToken is the environment variable
+	// containing the API Token
+	CloudflareAPIToken = "CLOUDFLARE_DNS_API_TOKEN"
+)
+
+// Provider manages DNS entries
+type Provider interface {
+	libdns.RecordGetter
+	libdns.RecordDeleter
+	libdns.RecordSetter
+	libdns.RecordAppender
+}
+
+// DefaultDNSProvider returns a cloudflare DNS provider
+// using an API Token from env [CloudflareAPIToken]
+func DefaultDNSProvider() (*cloudflare.Provider, error) {
+	s := os.Getenv(CloudflareAPIToken)
+	if s == "" {
+		return nil, fmt.Errorf("%q: %s", CloudflareAPIToken, "not found")
+	}
+
+	p := &cloudflare.Provider{
+		APIToken: s,
+	}
+
+	return p, nil
+}

pkg/dns/record.go

@@ -0,0 +1,247 @@
+package dns
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/netip"
+	"sort"
+	"strings"
+	"time"
+
+	"darvaza.org/core"
+	"github.com/libdns/libdns"
+
+	"git.jpi.io/amery/jpictl/pkg/cluster"
+)
+
+func (mgr *Manager) fqdn(name string) string {
+	return fmt.Sprintf("%s.%s.", name, mgr.domain)
+}
+
+// SortAddrSlice sorts a slice of [netip.Addr]
+func SortAddrSlice(s []netip.Addr) []netip.Addr {
+	sort.Slice(s, func(i, j int) bool {
+		return s[i].Less(s[j])
+	})
+	return s
+}
+
+// SortAddrRecords sorts a slice of [AddrRecord]
+// by Name and Address
+func SortAddrRecords(s []AddrRecord) []AddrRecord {
+	sort.Slice(s, func(i, j int) bool {
+		return s[i].Name < s[j].Name
+	})
+
+	for _, p := range s {
+		SortAddrSlice(p.Addr)
+	}
+
+	return s
+}
+
+// SortRecords sorts a slice of [libdns.Record], by Name, Type and Value
+func SortRecords(s []libdns.Record) []libdns.Record {
+	sort.Slice(s, func(i, j int) bool {
+		return lessRecord(s[i], s[j])
+	})
+	return s
+}
+
+func lessRecord(a, b libdns.Record) bool {
+	aName := strings.ToLower(a.Name)
+	bName := strings.ToLower(b.Name)
+
+	switch {
+	case aName < bName:
+		return true
+	case aName > bName:
+		return false
+	}
+
+	aType := strings.ToUpper(a.Type)
+	bType := strings.ToUpper(b.Type)
+
+	switch {
+	case aType < bType:
+		return true
+	case aType > bType:
+		return false
+	case aType == "A", aType == "AAAA":
+		// IP Addresses
+		var aa, ba netip.Addr
+
+		switch {
+		case aa.UnmarshalText([]byte(a.Value)) != nil:
+			// bad address on a
+			return true
+		case ba.UnmarshalText([]byte(b.Value)) != nil:
+			// bad address on b
+			return false
+		default:
+			return aa.Less(ba)
+		}
+	default:
+		// text
+		return a.Value < b.Value
+	}
+}
+
+// AddrRecord represents an A or AAAA record
+type AddrRecord struct {
+	Name string
+	Addr []netip.Addr
+}
+
+// Sort sorts the addresses of the record
+func (rr *AddrRecord) Sort() {
+	SortAddrSlice(rr.Addr)
+}
+
+// Export converts the record into libdns.Record
+func (rr *AddrRecord) Export() []libdns.Record {
+	out := make([]libdns.Record, len(rr.Addr))
+	for i, addr := range rr.Addr {
+		out[i] = libdns.Record{
+			Name:  rr.Name,
+			TTL:   time.Second * 1,
+			Type:  core.IIf(addr.Is6(), "AAAA", "A"),
+			Value: addr.String(),
+		}
+	}
+
+	return out
+}
+
+// WriteTo writes the record in BIND notation
+func (rr *AddrRecord) WriteTo(w io.Writer) (int64, error) {
+	var total int
+	for _, addr := range rr.Addr {
+		n, err := fmt.Fprint(w,
+			rr.Name, "\t",
+			1, "\t",
+			core.IIf(addr.Is6(), "AAAA", "A"), "\t",
+			addr.String(), "\n")
+
+		switch {
+		case err != nil:
+			return 0, err
+		case n > 0:
+			total += n
+		}
+	}
+
+	return int64(total), nil
+}
+
+// String converts the record into BIND entries
+func (rr *AddrRecord) String() string {
+	var buf bytes.Buffer
+	_, _ = rr.WriteTo(&buf)
+	return buf.String()
+}
+
+func (mgr *Manager) genRegionsSorted() []string {
+	regions := make([]string, 0, len(mgr.regions))
+	for name := range mgr.regions {
+		regions = append(regions, name)
+	}
+
+	return cluster.SortRegions(regions)
+}
+
+func (mgr *Manager) genZonesSorted() []string {
+	zones := make([]string, 0, len(mgr.zones))
+	for name := range mgr.zones {
+		zones = append(zones, name)
+	}
+
+	sort.Strings(zones)
+	return zones
+}
+
+func (mgr *Manager) genAllAddrRecords() []AddrRecord {
+	var out []AddrRecord
+
+	cache := make(map[string][]netip.Addr)
+
+	// zones
+	for _, z := range mgr.zones {
+		// hosts
+		s := mgr.genZoneHostRecords(z)
+		out = append(out, s...)
+
+		// zone alias
+		addrs := mgr.genZoneAddresses(z)
+		name := z.Name
+
+		out = append(out, AddrRecord{
+			Name: name + mgr.suffix,
+			Addr: addrs,
+		})
+
+		// and cache for regions
+		cache[name] = addrs
+	}
+
+	for _, name := range mgr.genRegionsSorted() {
+		var addrs []netip.Addr
+
+		for _, z := range mgr.regions[name] {
+			addrs = append(addrs, cache[z]...)
+		}
+
+		rec := AddrRecord{
+			Name: name + mgr.suffix,
+			Addr: addrs,
+		}
+		rec.Sort()
+
+		out = append(out, rec)
+	}
+
+	SortAddrRecords(out)
+	return out
+}
+
+func (*Manager) genZoneAddresses(z *Zone) []netip.Addr {
+	var out []netip.Addr
+
+	for _, p := range z.Hosts {
+		if p.Active {
+			out = append(out, p.Addrs...)
+		}
+	}
+
+	SortAddrSlice(out)
+	return out
+}
+
+func (mgr *Manager) genZoneHostRecords(z *Zone) []AddrRecord {
+	out := make([]AddrRecord, 0, len(z.Hosts))
+
+	for _, p := range z.Hosts {
+		rec := AddrRecord{
+			Name: p.String() + mgr.suffix,
+			Addr: p.Addrs,
+		}
+		out = append(out, rec)
+	}
+
+	SortAddrRecords(out)
+	return out
+}
+
+func (mgr *Manager) genRegionAddressesCached(name string,
+	zones map[string][]netip.Addr) []netip.Addr {
+	//
+	var addrs []netip.Addr
+
+	for _, zoneName := range mgr.regions[name] {
+		addrs = append(addrs, zones[zoneName]...)
+	}
+
+	SortAddrSlice(addrs)
+	return addrs
+}

pkg/dns/show.go

@@ -0,0 +1,58 @@
+package dns
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	"darvaza.org/core"
+	"github.com/libdns/libdns"
+)
+
+// Show shows current DNS entries
+func (mgr *Manager) Show(ctx context.Context, names ...string) error {
+	recs, err := mgr.GetRecords(ctx, names...)
+	if err != nil {
+		return core.Wrap(err, "GetRecords")
+	}
+
+	SortRecords(recs)
+	return writeRecords(recs, os.Stdout)
+}
+
+func writeRecords(recs []libdns.Record, w io.Writer) error {
+	var buf bytes.Buffer
+
+	for _, rr := range recs {
+		_ = fmtRecord(&buf, rr)
+		_, _ = buf.WriteRune('\n')
+	}
+	_, _ = fmt.Fprintf(&buf, "; %v records\n", len(recs))
+
+	_, err := buf.WriteTo(w)
+	return err
+}
+
+func fmtRecord(w io.Writer, rr libdns.Record) error {
+	ttl := int(rr.TTL / time.Second)
+	if ttl < 1 {
+		ttl = 1
+	}
+
+	_, err := fmt.Fprintf(w, "%s\t%v\tIN\t%s\t%s",
+		rr.Name,
+		ttl,
+		rr.Type,
+		rr.Value)
+
+	if err == nil {
+		if rr.ID != "" {
+			_, err = fmt.Fprintf(w, "\t; %s", rr.ID)
+		}
+	}
+
+	return err
+}

pkg/dns/sync.go

@@ -0,0 +1,347 @@
+package dns
+
+import (
+	"context"
+	"net/netip"
+	"sort"
+	"strings"
+	"time"
+
+	"darvaza.org/core"
+	"darvaza.org/slog"
+	"github.com/libdns/libdns"
+)
+
+// SyncAddrRecord is similar to AddrRecord but include libdns.Record details
+// fetched from the Provider
+type SyncAddrRecord struct {
+	Name  string
+	Addrs []SyncAddr
+}
+
+// SyncAddr extends netip.Addr with ID and TTL fetched from the Provider
+type SyncAddr struct {
+	ID   string
+	Addr netip.Addr
+	TTL  time.Duration
+}
+
+// Export assembles a libdns.Record
+func (rec *SyncAddr) Export(name string) libdns.Record {
+	return libdns.Record{
+		ID:    rec.ID,
+		Name:  name,
+		Type:  core.IIf(rec.Addr.Is6(), "AAAA", "A"),
+		TTL:   time.Second,
+		Value: rec.Addr.String(),
+	}
+}
+
+// SortSyncAddrSlice sorts a slice of [SyncAddr] by its address
+func SortSyncAddrSlice(s []SyncAddr) []SyncAddr {
+	sort.Slice(s, func(i, j int) bool {
+		a1 := s[i].Addr
+		a2 := s[j].Addr
+		return a1.Less(a2)
+	})
+	return s
+}
+
+// GetSyncRecords pulls all the address records on DNS for our domain
+func (mgr *Manager) GetSyncRecords(ctx context.Context) ([]SyncAddrRecord, error) {
+	recs, err := mgr.GetRecords(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return mgr.asSyncRecords(recs)
+}
+
+// AsSyncAddr converts a A or AAAA [libdns.Record] into a [SyncAddr]
+func (mgr *Manager) AsSyncAddr(rr libdns.Record) (SyncAddr, bool, error) {
+	var out SyncAddr
+	var addr netip.Addr
+
+	// skip non-address types
+	if rr.Type != "A" && rr.Type != "AAAA" {
+		return out, false, nil
+	}
+
+	// skip entries not containing our suffix
+	if mgr.suffix != "" {
+		if !strings.HasSuffix(rr.Name, mgr.suffix) {
+			return out, false, nil
+		}
+	}
+
+	err := addr.UnmarshalText([]byte(rr.Value))
+	if err != nil {
+		// invalid address on A or AAAA record
+		return out, false, err
+	}
+
+	out = SyncAddr{
+		ID:   rr.ID,
+		TTL:  rr.TTL,
+		Addr: addr,
+	}
+
+	return out, true, nil
+}
+
+func (mgr *Manager) asSyncRecordsMap(recs []libdns.Record) map[string][]SyncAddr {
+	// filter and convert
+	out := make(map[string][]SyncAddr)
+	for _, rr := range recs {
+		addr, ok, err := mgr.AsSyncAddr(rr)
+		switch {
+		case err != nil:
+			// skip invalid addresses
+			mgr.l.Error().
+				WithField("subsystem", "dns").
+				WithField(slog.ErrorFieldName, err).
+				WithField("name", rr.Name).
+				WithField("type", rr.Type).
+				WithField("addr", rr.Value).
+				Print()
+		case ok:
+			// store
+			out[rr.Name] = append(out[rr.Name], addr)
+		}
+	}
+	return out
+}
+
+func (mgr *Manager) asSyncRecords(recs []libdns.Record) ([]SyncAddrRecord, error) {
+	cache := mgr.asSyncRecordsMap(recs)
+
+	// prepare records
+	out := make([]SyncAddrRecord, len(cache))
+	names := make([]string, 0, len(cache))
+	for name := range cache {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+
+	for i, name := range names {
+		addrs := cache[name]
+
+		out[i] = SyncAddrRecord{
+			Name:  name,
+			Addrs: SortSyncAddrSlice(addrs),
+		}
+	}
+
+	return out, nil
+}
+
+// Sync updates all the address records on DNS for our domain
+func (mgr *Manager) Sync(ctx context.Context) error {
+	current, err := mgr.GetSyncRecords(ctx)
+	if err != nil {
+		return core.Wrap(err, "GetRecords")
+	}
+
+	goal := mgr.genAllAddrRecords()
+	for _, p := range makeSyncMap(current, goal) {
+		err := mgr.doSync(ctx, p.Name, p.Before, p.After)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (mgr *Manager) doSync(ctx context.Context, name string,
+	before []SyncAddr, after []netip.Addr) error {
+	//
+	var err error
+
+	for _, a := range after {
+		before, err = mgr.doSyncUpdateOrInsert(ctx, name, a, before)
+		if err != nil {
+			return err
+		}
+	}
+
+	for _, b := range before {
+		err = mgr.doSyncRemove(ctx, name, b)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (mgr *Manager) doSyncUpdateOrInsert(ctx context.Context, name string,
+	addr netip.Addr, addrs []SyncAddr) ([]SyncAddr, error) {
+	//
+	var err error
+
+	i, ok := findSyncAddrSorted(addr, addrs)
+	if ok {
+		rec := addrs[i]
+
+		addrs = append(addrs[:i], addrs[i+1:]...)
+		err = mgr.doSyncUpdate(ctx, name, addr, rec)
+	} else {
+		err = mgr.doSyncInsert(ctx, name, addr)
+	}
+
+	return addrs, err
+}
+
+func (mgr *Manager) doSyncUpdate(ctx context.Context, name string,
+	addr netip.Addr, rec SyncAddr) error {
+	//
+	var log slog.Logger
+	var msg string
+	var err error
+
+	if rec.TTL != time.Second {
+		// amend TTL
+
+		// TODO: batch updates
+		_, err = mgr.p.SetRecords(ctx, mgr.domain, []libdns.Record{
+			rec.Export(name),
+		})
+
+		if err == nil {
+			log = mgr.l.Info()
+			msg = "Updated"
+		} else {
+			log = mgr.l.Error().
+				WithField(slog.ErrorFieldName, err)
+			msg = "Failed"
+		}
+	} else {
+		log = mgr.l.Info()
+		msg = "OK"
+	}
+
+	log.
+		WithField("subsystem", "dns").
+		WithField("name", name).
+		WithField("addr", addr).
+		Print(msg)
+
+	return err
+}
+
+func (mgr *Manager) doSyncInsert(ctx context.Context, name string,
+	addr netip.Addr) error {
+	//
+	var log slog.Logger
+	var msg string
+
+	rec := libdns.Record{
+		Name:  name,
+		Type:  core.IIf(addr.Is6(), "AAAA", "A"),
+		TTL:   time.Second,
+		Value: addr.String(),
+	}
+
+	_, err := mgr.p.AppendRecords(ctx, mgr.domain, []libdns.Record{
+		rec,
+	})
+
+	if err != nil {
+		log = mgr.l.Error().
+			WithField(slog.ErrorFieldName, err)
+		msg = "Failed to Add"
+	} else {
+		log = mgr.l.Info()
+		msg = "Added"
+	}
+
+	log.
+		WithField("subsystem", "dns").
+		WithField("name", name).
+		WithField("addr", addr).
+		Print(msg)
+	return err
+}
+
+func (mgr *Manager) doSyncRemove(ctx context.Context, name string,
+	rec SyncAddr) error {
+	//
+	var log slog.Logger
+	var msg string
+
+	// TODO: batch deletes
+	_, err := mgr.p.DeleteRecords(ctx, mgr.domain, []libdns.Record{
+		rec.Export(name),
+	})
+
+	if err != nil {
+		log = mgr.l.Error().
+			WithField(slog.ErrorFieldName, err)
+		msg = "Failed to Delete"
+	} else {
+		log = mgr.l.Warn()
+		msg = "Deleted"
+	}
+
+	log.
+		WithField("subsystem", "dns").
+		WithField("name", name).
+		WithField("addr", rec.Addr).
+		Print(msg)
+	return err
+}
+
+func findSyncAddrSorted(target netip.Addr, addrs []SyncAddr) (int, bool) {
+	for i, a := range addrs {
+		switch target.Compare(a.Addr) {
+		case 0:
+			// match
+			return i, true
+		case -1:
+			// miss
+			return -1, false
+		default:
+			// next
+		}
+	}
+
+	return -1, false
+}
+
+type syncMapEntry struct {
+	Name   string
+	Before []SyncAddr
+	After  []netip.Addr
+}
+
+func makeSyncMap(current []SyncAddrRecord,
+	goal []AddrRecord) map[string]syncMapEntry {
+	//
+	data := make(map[string]syncMapEntry)
+
+	for _, cur := range current {
+		me, ok := data[cur.Name]
+		if !ok {
+			me = syncMapEntry{
+				Name: cur.Name,
+			}
+		}
+
+		me.Before = append(me.Before, cur.Addrs...)
+		data[cur.Name] = me
+	}
+
+	for _, rr := range goal {
+		me, ok := data[rr.Name]
+		if !ok {
+			me = syncMapEntry{
+				Name: rr.Name,
+			}
+		}
+		me.After = append(me.After, rr.Addr...)
+		data[rr.Name] = me
+	}
+
+	return data
+}