Merge pull request 'feat: Nebula mesh network overlay' (#12) from klaatu/nixos:feat/nebula-mesh into main

Reviewed-on: https://src.thehellings.com/greg/nixos/pulls/12

hosts/unstable/exodus/default.nix

@@ -30,6 +30,9 @@
   greg = {
     home = true;
     gnome.enable = true;
+    nebula = {
+      enable = true;
+    };
     podman.enable = true;
     print.enable = true;
     tailscale = {

hosts/unstable/genesis/default.nix

@@ -35,6 +35,15 @@ in
   greg = {
     home = true;
     gnome.enable = false;
+    nebula = {
+      enable = true;
+      # genesis IS the routing node for the home LAN — it does not route through itself.
+      # Override the module default (which points at genesis) to avoid a routing loop.
+      unsafeRoutes = [ ];
+      # genesis routes the home LAN (10.42.0.0/16) into the Nebula overlay.
+      # Sign genesis's cert with -subnets '10.42.0.0/16' (see secrets/nebula/README.md).
+      routesSubnet = "10.42.0.0/16";
+    };
     proxies = {
     };
   };

hosts/unstable/hosea/default.nix

@@ -49,6 +49,7 @@ in
 
   greg = {
     home = true;
+    nebula.enable = true;
     proxies = {
       "jellyfin.home".target = "http://localhost:8096/";
       "jellyfin.thehellings.lan".target = "http://localhost:8096/";

hosts/unstable/isaiah/default.nix

@@ -42,6 +42,7 @@
       vip = metadata.hosts.${config.networking.hostName}.ip;
       priority = 255;
     };
+    nebula.enable = true;
     podman.enable = true;
     tailscale = {
       enable = true;

hosts/unstable/jeremiah/default.nix

@@ -85,6 +85,7 @@ in
       vip = ip;
       priority = 254;
     };
+    nebula.enable = true;
     tailscale = {
       enable = true;
       tags = [ "home" ];

hosts/unstable/linode/default.nix

@@ -26,6 +26,10 @@
   greg = {
     home = false;
     linode.enable = true;
+    nebula = {
+      enable = true;
+      isLighthouse = true;
+    };
     proxies."immich.thehellings.com" = {
       genAliases = false;
       target = "http://localhost:${builtins.toString config.services.immich-public-proxy.port}";

hosts/unstable/zeke/default.nix

@@ -26,6 +26,7 @@
       vipInterface = "enp12s0";
       priority = 253;
     };
+    nebula.enable = true;
     remote-builder.enable = true;
     runner = {
       enable = true;

modules/nixos/default.nix

@@ -22,6 +22,7 @@
     ./router.nix
     ./rpi4.nix
     ./syncthing.nix
+    ./nebula.nix
     ./tailscale.nix
     ./vmdev.nix
   ];

modules/nixos/nebula.nix

@@ -0,0 +1,229 @@
+{
+  config,
+  lib,
+  metadata,
+  ...
+}:
+
+# Nebula overlay mesh network module (greg namespace)
+#
+# This module configures a Nebula node for the nebula.thehellings.com overlay.
+# CIDR: 10.157.0.0/16
+# Lighthouse: linode (public internet, acts as relay too)
+#
+# Each host requires:
+#   secrets/nebula/<hostname>.key.age  - encrypted private key
+#   secrets/nebula/<hostname>.crt      - certificate (public, unencrypted in repo)
+#   secrets/nebula/ca.crt              - CA certificate (public, unencrypted in repo)
+#
+# The nebula IP for each host must be set in network.json under
+#   hosts.<name>.nebulaIp  (e.g. "10.157.0.1")
+#
+# Lighthouse address is the public IP/DNS of linode.  Update the
+# `lighthouseAddrs` option below or override per-host if it changes.
+
+let
+  cfg = config.greg.nebula;
+  nebulaDomain = "nebula.thehellings.com";
+  # Linode's public address — used by all non-lighthouse hosts to reach it.
+  # Override with greg.nebula.lighthouseAddr if the public IP ever changes.
+  defaultLighthouseAddr = "linode.${nebulaDomain}";
+in
+{
+  options.greg.nebula = {
+    enable = lib.mkEnableOption "Nebula overlay mesh network";
+
+    isLighthouse = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Whether this host is a Nebula lighthouse/relay node";
+    };
+
+    isRelay = lib.mkOption {
+      type = lib.types.bool;
+      default = cfg.isLighthouse;
+      description = "Whether this host acts as a relay (am_relay). Defaults to true when isLighthouse is true.";
+    };
+
+    nebulaIp = lib.mkOption {
+      type = lib.types.str;
+      description = "This host's Nebula overlay IP (e.g. 10.157.0.1)";
+      default =
+        let
+          hostData = metadata.hosts.${config.networking.hostName} or { };
+        in
+        hostData.nebulaIp
+          or (throw "greg.nebula.nebulaIp must be set for host ${config.networking.hostName}");
+    };
+
+    lighthouseAddr = lib.mkOption {
+      type = lib.types.str;
+      default = defaultLighthouseAddr;
+      description = "Public address (host:port) used to reach the lighthouse from non-lighthouse hosts";
+    };
+
+    lighthouseNebulaIp = lib.mkOption {
+      type = lib.types.str;
+      default =
+        let
+          linodeData = metadata.hosts.linode or { };
+        in
+        linodeData.nebulaIp or "10.157.0.1";
+      description = "Nebula overlay IP of the lighthouse host";
+    };
+
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 4242;
+      description = "UDP port Nebula listens on";
+    };
+
+    # unsafe_routes: allow non-Nebula subnets to be routed through this host.
+    # Used on genesis to expose 10.42.0.0/16 (the home LAN) to the overlay.
+    unsafeRoutes = lib.mkOption {
+      type = lib.types.listOf (
+        lib.types.submodule {
+          options = {
+            route = lib.mkOption {
+              type = lib.types.str;
+              description = "CIDR to route through this host (e.g. 10.42.0.0/16)";
+            };
+            via = lib.mkOption {
+              type = lib.types.str;
+              description = "Nebula overlay IP of the host that provides the route";
+            };
+          };
+        }
+      );
+      # Default: route the home LAN through genesis (the home router node).
+      # Hosts that ARE genesis (or any other routing node) should override this to [].
+      default = [ ];
+      description = ''
+        List of unsafe_routes to configure on this host (for reaching non-Nebula subnets).
+        Defaults to routing the home LAN (10.42.0.0/16) through genesis (10.157.0.2).
+        Override to [] on hosts that are themselves a routing node (e.g. genesis).
+      '';
+    };
+
+    # Whether this host IS the router for an unsafe subnet
+    # (enables IP forwarding + nftables masquerade for the home LAN)
+    routesSubnet = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      description = ''
+        When set, this host will route traffic from the Nebula overlay
+        to this subnet.  Enables IP forwarding and nftables masquerade.
+        Example: "10.42.0.0/16"
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    # agenix: decrypt this host's Nebula private key at boot
+    age.secrets."nebula-${config.networking.hostName}-key" = {
+      file = ../../secrets/nebula/${config.networking.hostName}.key.age;
+      owner = config.systemd.services."nebula@${nebulaDomain}".serviceConfig.User;
+      mode = "0400";
+    };
+
+    services.nebula.networks.${nebulaDomain} = {
+      enable = true;
+
+      # CA certificate (public — lives unencrypted in the repo)
+      ca = ../../secrets/nebula/ca.crt;
+
+      # Host certificate (public — lives unencrypted in the repo)
+      cert = ../../secrets/nebula/${config.networking.hostName}.crt;
+
+      # Private key (agenix-decrypted at runtime)
+      key = config.age.secrets."nebula-${config.networking.hostName}-key".path;
+
+      # Static host map: tell every node where the lighthouse lives
+      staticHostMap = {
+        "${cfg.lighthouseNebulaIp}" = [ "${cfg.lighthouseAddr}:${toString cfg.port}" ];
+      };
+
+      isLighthouse = cfg.isLighthouse;
+      isRelay = cfg.isRelay;
+
+      listen = {
+        host = "0.0.0.0";
+        # Lighthouses and relays need a fixed port; regular nodes use 0 (OS-assigned)
+        port = if (cfg.isLighthouse || cfg.isRelay) then cfg.port else null;
+      };
+
+      lighthouses = lib.optionals (!cfg.isLighthouse) [ cfg.lighthouseNebulaIp ];
+
+      relays = lib.optionals (!cfg.isLighthouse && !cfg.isRelay) [ cfg.lighthouseNebulaIp ];
+
+      tun = {
+        # Interface name
+        device = "nebula0";
+      };
+
+      settings.tun.unsafe_routes = cfg.unsafeRoutes;
+
+      # Firewall: permissive defaults — tighten per-host as desired
+      firewall = {
+        outbound = [
+          {
+            port = "any";
+            proto = "any";
+            host = "any";
+          }
+        ];
+        inbound = [
+          # Allow ICMP (ping) from any Nebula peer
+          {
+            port = "any";
+            proto = "icmp";
+            host = "any";
+          }
+          # Allow all traffic from within the Nebula overlay
+          {
+            port = "any";
+            proto = "any";
+            host = "any";
+          }
+        ]
+        # When routing an unsafe subnet, allow inbound traffic destined
+        # for that subnet from any Nebula peer (local_cidr scopes it)
+        ++ lib.optionals (cfg.routesSubnet != null) [
+          {
+            port = "any";
+            proto = "any";
+            host = "any";
+            local_cidr = cfg.routesSubnet;
+          }
+        ];
+      };
+    };
+
+    # Open the Nebula UDP port in the firewall
+    networking.firewall.allowedUDPPorts = [ cfg.port ];
+
+    # When this host routes traffic to a non-Nebula subnet, enable IP
+    # forwarding and add nftables masquerade rules (see unsafe_routes guide).
+    boot.kernel.sysctl = lib.mkIf (cfg.routesSubnet != null) {
+      "net.ipv4.ip_forward" = lib.mkDefault "1";
+    };
+
+    networking.nftables.tables = lib.mkIf (cfg.routesSubnet != null) {
+      nebula_routing = {
+        family = "ip";
+        content = ''
+          chain postrouting {
+            type nat hook postrouting priority srcnat; policy accept;
+            ip saddr 10.157.0.0/16 ip daddr ${cfg.routesSubnet} counter masquerade
+          }
+
+          chain forward {
+            type filter hook forward priority filter; policy accept;
+            ct state related,established counter accept
+            iifname "nebula0" ip saddr 10.157.0.0/16 ip daddr ${cfg.routesSubnet} counter accept
+          }
+        '';
+      };
+    };
+  };
+}

network.json

@@ -16,21 +16,29 @@
       "ip": null,
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFxmnCj2E9DxcnefPW+n4yCuLShxqr0p024riogdeXA3",
       "ts": "100.70.99.91",
-      "system": "x86_64-linux"
+      "system": "x86_64-linux",
+      "nebulaIp": "10.157.0.7"
     },
     "genesis": {
       "ip": "10.42.1.5",
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO/CGE2rqlL2Qr0TJkwQMsHFSDkhGWlrUlvfcvcylO1n",
       "ts": "100.96.198.104",
       "system": "x86_64-linux",
-      "tags": ["router", "server"]
+      "tags": [
+        "router",
+        "server"
+      ],
+      "nebulaIp": "10.157.0.2"
     },
     "hosea": {
       "ip": "10.42.1.7",
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKLIwkTTXA56sUlUjEulXXZRvZy5H4a5ZwgKWLlpkQDz",
       "ts": "100.68.203.1",
       "system": "x86_64-linux",
-      "tags": ["server"]
+      "tags": [
+        "server"
+      ],
+      "nebulaIp": "10.157.0.3"
     },
     "icdm-root": {
       "external": true,
@@ -42,8 +50,16 @@
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHleYKtfV4W1Z63Ysu9w5Rbglqlz4F92YcZoMkucoTNf",
       "ts": "100.84.183.79",
       "system": "x86_64-linux",
-      "systems": ["x86_64-linux", "aarch64-linux"],
-      "tags": ["builder", "kube", "server"]
+      "systems": [
+        "x86_64-linux",
+        "aarch64-linux"
+      ],
+      "tags": [
+        "builder",
+        "kube",
+        "server"
+      ],
+      "nebulaIp": "10.157.0.4"
     },
     "iso": {
       "external": true,
@@ -59,8 +75,16 @@
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOjQjXq9WYU2Ki27BR9WwJ4ZruS/lJXbjC1b0Q42Adi0",
       "ts": "100.102.186.39",
       "system": "x86_64-linux",
-      "systems": ["x86_64-linux", "aarch64-linux"],
-      "tags": ["builder", "kube", "server"]
+      "systems": [
+        "x86_64-linux",
+        "aarch64-linux"
+      ],
+      "tags": [
+        "builder",
+        "kube",
+        "server"
+      ],
+      "nebulaIp": "10.157.0.5"
     },
     "joel": {
       "external": true,
@@ -72,7 +96,11 @@
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMv9Zud3kZOl86gtmkn+uj3D4kiXWDPtyUL02VVLNR4Q",
       "ts": "100.109.86.8",
       "system": "x86_64-linux",
-      "tags": ["public", "server"]
+      "tags": [
+        "public",
+        "server"
+      ],
+      "nebulaIp": "10.157.0.1"
     },
     "MacBook-Pro.local": {
       "external": true,
@@ -108,8 +136,16 @@
       "pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOos0zQePsa+T6Z2dsKbPOvEdrBQ8a6mx3s7pN6ysCI0",
       "ts": "100.90.74.19",
       "system": "x86_64-linux",
-      "systems": ["x86_64-linux", "aarch64-linux"],
-      "tags": ["builder", "kube", "server"]
+      "systems": [
+        "x86_64-linux",
+        "aarch64-linux"
+      ],
+      "tags": [
+        "builder",
+        "kube",
+        "server"
+      ],
+      "nebulaIp": "10.157.0.6"
     }
   }
 }

secrets/nebula/.gitignore

@@ -0,0 +1,2 @@
+# Ensure that this doesn't accidentally get committed
+*.key

secrets/nebula/.gitkeep

@@ -0,0 +1,8 @@
+# Files that belong here (committed to repo):
+#   ca.crt           — Nebula CA certificate (public)
+#   *.crt            — per-host certificates (public)
+#   *.key.age        — agenix-encrypted private keys (safe to commit)
+#
+# Files that must NEVER be committed:
+#   ca.key           — CA private key (keep offline!)
+#   *.key            — plaintext host private keys (encrypt with agenix first)

secrets/nebula/README.md

@@ -0,0 +1,109 @@
+# Nebula PKI Bootstrap Guide
+
+This directory holds the Nebula CA certificate, host certificates, and
+agenix-encrypted private keys for the `nebula.thehellings.com` overlay network.
+
+## CIDR
+`10.157.0.0/16`
+
+## Host IP Assignments
+
+| Host      | Nebula IP    | Role                  |
+|-----------|-------------|----------------------|
+| linode    | 10.157.0.1  | Lighthouse + relay    |
+| genesis   | 10.157.0.2  | LAN router (unsafe)  |
+| hosea     | 10.157.0.3  | Regular node          |
+| isaiah    | 10.157.0.4  | Regular node          |
+| jeremiah  | 10.157.0.5  | Regular node          |
+| zeke      | 10.157.0.6  | Regular node          |
+| exodus    | 10.157.0.7  | Regular node (laptop) |
+
+---
+
+## Step 1 — Install nebula-cert
+
+```bash
+nix shell nixpkgs#nebula
+```
+
+## Step 2 — Create the CA
+
+Run once; keep `ca.key` offline/safe (do NOT commit it):
+
+```bash
+nebula-cert ca -name "thehellings.com" -out-crt ca.crt -out-key ca.key
+```
+
+Commit `ca.crt` (public) to the repo at `secrets/nebula/ca.crt`.
+Store `ca.key` securely (password manager / offline).
+
+## Step 3 — Sign host certificates
+
+For most hosts (no subnet routing):
+```bash
+nebula-cert sign -ca-crt ca.crt -ca-key ca.key \
+  -name <hostname> \
+  -ip <nebulaIp>/16 \
+  -out-crt secrets/nebula/<hostname>.crt \
+  -out-key secrets/nebula/<hostname>.key
+```
+
+For **genesis** (routes the home LAN `10.42.0.0/16`), add `-subnets`:
+```bash
+nebula-cert sign -ca-crt ca.crt -ca-key ca.key \
+  -name genesis \
+  -ip 10.157.0.2/16 \
+  -subnets '10.42.0.0/16' \
+  -out-crt secrets/nebula/genesis.crt \
+  -out-key secrets/nebula/genesis.key
+```
+
+Commit `*.crt` files (public) to the repo.
+Do NOT commit raw `*.key` files — encrypt them first (Step 4).
+
+## Step 4 — Encrypt private keys with agenix
+
+From the repo root:
+```bash
+cd nixos
+for host in linode genesis hosea isaiah jeremiah zeke exodus; do
+  agenix -e secrets/nebula/${host}.key.age < secrets/nebula/${host}.key
+  rm secrets/nebula/${host}.key   # remove plaintext key
+done
+```
+
+The `secrets/secrets.nix` file already declares the `.key.age` recipients.
+
+## Step 5 — Configure linode's public DNS / firewall
+
+- Add a DNS A record: `linode.nebula.thehellings.com` → linode's public IP
+- Open UDP port `4242` in linode's firewall / Linode Cloud Firewall rules
+
+## Step 6 — Deploy
+
+```bash
+colmena apply --on linode   # lighthouse first
+colmena apply               # rest of the fleet
+```
+
+## Verifying
+
+```bash
+# From any host, ping another by Nebula IP
+ping 10.157.0.2   # genesis
+
+# From any host, reach home LAN via unsafe_routes
+ping 10.42.1.1    # UDM Pro (via genesis)
+```
+
+## Notes
+
+- `ca.crt` is public and lives in the repo unencrypted.
+- `*.crt` (host certs) are public and live in the repo unencrypted.
+- `*.key.age` are agenix-encrypted private keys (in `secrets/nebula/`).
+- The NixOS module (`modules/nixos/nebula.nix`) references these paths directly.
+- The lighthouse (`linode`) has `isLighthouse = true` and `isRelay = true`.
+- `genesis` has `routesSubnet = "10.42.0.0/16"` which enables IP forwarding
+  and nftables masquerade so Nebula peers can reach the home LAN.
+- All other hosts have `unsafeRoutes` pointing to genesis (10.157.0.2) for
+  the 10.42.0.0/16 subnet.

secrets/nebula/ca.crt

@@ -0,0 +1,5 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGGoCCAD3RoZWhlbGxpbmdzLmNvbYQB/4UEac2JJoYEa668poIgUABA1IfasOIr
+5hw9rQQIMzYwszJHtYp9ugmJcLLunqaDQHcumg7wvHWfQtm9ONu136FMxdSeXPvx
+3QO+IOTHxm/8nuCyYUuegR6edKdxVxUPWGFkVq8M5ExxgxqsD2u2AgQ=
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/exodus.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGloD+ABmV4b2R1c6EHBAUKnQAHEIUEac2MaYYEa668pYcgg4lMYGB2VakRFO6b
+K9vHSLzjZpuqhBVQ7MReOwUHQKyCIJs1EbYsPKmY0efr23jfpyncEByAqEuDvKMz
+2+fUUzoRg0DsosJ26LJhHe1MBvQbKx//ZwJ1iTEWmkGJnAfdglLpcf6RWtSOQaEL
+UXpSV2MK3IbgSpP26zRI8mpp9OW9ApQM
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/genesis.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGvoEmAB2dlbmVzaXOhBwQFCp0AAhCiBwQFCioAABCFBGnNjNCGBGuuvKWHIIOJ
+TGBgdlWpERTumyvbx0i842abqoQVUOzEXjsFB0CsgiAgHipBP9jhM6AtUoB6/NLR
+6Ijhq9VYjlJqJcu02sDseYNAxzppNhLFQ8Q8aZiYDe8Tt8U9HbBZERXS80hmia8a
+6nUcpsL6tgc7n1hq/a4CxsSWoz8desGBF/BZKq4qEzwwBQ==
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/genesis.key.age

@@ -0,0 +1,38 @@
+age-encryption.org/v1
+-> ssh-ed25519 87huqg WXMqashYNOR9yEbdbSUDmDzoMoqgcoMsT2MH2S0GKmg
+2HtruRcG98iQuf4qmfrqSAm87HkejgmQdVJHJyOOwOI
+-> ssh-ed25519 8UnW5Q v29MY1lo+DDut1YuTfRWN3zQADxQHJXbIIUPuUJ3sAM
+qtZyn+8TGe9+bJwwvjyR76k6K9ZqGyKhQGTQKLnylZk
+-> ssh-ed25519 UFfTmg 9q7zsYWj8q5DpPoRxJgUeRMgxDPTE8q6pfHW3Qgh9hA
+dDfyqKQmFS17v7j2u7VoGUteG9hvAxEmopgIaIK/Y+k
+-> ssh-ed25519 xNtnoA fT16NQwHegZ8NID1mdIJMu3UrSD2+9t7lq8+np+HGi4
+Wv5wIZK3ET0QHeHD2QcNYAe6uPB0lwFw7gy96EwV98s
+-> ssh-ed25519 aY2AXA h93ygtkSRcDpVHy1ZhFWxLbOU0rdH1zGeZNP9Y1lbH4
+z0HjGZenKe9cQTBUAgufIUgElSqrKQAcdcPAXE6MtFI
+-> ssh-ed25519 AQhf1g C+o3QKZbh85eO25aYtcjPOSp3PINPkOCsc+4GHkq+Qs
+q2A7PK6zxcGiMwv3pdpd37xkQ4VWbZvUM49WaULuYzw
+-> ssh-ed25519 mOmPfg if1IROrr9joSCWV/DdtF5mydOKabZkXmsdAwiCErWls
+vykl/npqwKDP3a+n57Ala6QaPX/+izTputvkLsdOdWs
+-> ssh-ed25519 YJiRbw te0RkrNjbL1J76T59XWnZuDTUuGsXIaqgAcrPV9CUgo
+TpAV/oTT6MI1LgWhhgFZr0El92HQpowHhg5nGRjzs10
+-> ssh-ed25519 0/WsKg IlmjW0LvTTimuyX7pZsFjlACBJe0niM9kM/7kdJH8Tk
+NYERifDZzpmvhzn2Rf0YPviJHfGwlXGaut8Iz1JewUE
+-> ssh-ed25519 Nl/5yA kP9Lys5bCdpDDPFmeWvpzUqQe5WQBvSvYuWB+mhdVWM
+YHoc8vhAW/t+USrTNKbUR5IWdMqr2Ks4dA0Bamp52S4
+-> ssh-ed25519 GdLgCQ D4/qiTTvYk8jxewNQCVfoBQYXu+oV7q3tT3a89kG2gk
+YkzdAgpG2WsQDVpmou7fZDx6BP/SWvQPHrqXVsYMMAY
+-> ssh-ed25519 tOH/HQ vgvAN0DO1T8crhQ+hcKUx7ddHXGi2rH05Bpz1rjBU2A
+2qGje0ciWf25ZCKQ4R2mcox2nCLr10YQjU8wEyYyOSg
+-> ssh-ed25519 FpzvfQ Z7u0rxi2n3iDSiosLHR8JMahjVITwHi45I/e2kG7xz8
+7boIDstWnjmhs4JIZcC9Oe9TVerRwCpMw6KO9pd+mJg
+-> ssh-ed25519 kdPvzQ Ts1NyubR5GHNQMouf2g+CB66tP30eBgMRPY+JI4hdUI
+oVYtbwVaPAI58OLFp2ZiPq25jlPPzmhnhtFeJIaLaAg
+-> ssh-ed25519 onmXpg yIecAxAGjIc3MM9Jj2isTAeRdnw3yu2Z0V9h+9LN6AU
+7O1kkpjssbiMzl4urn2abrV7m7+zUFs8NRbpmh/2TbE
+-> ssh-ed25519 CnhD0g BUYpZVebroM2eA7jGqczpC7vlsDcdRkU2hrSUZTZ2gE
+Jbumonfp1U8URoTNkNP+d3Kyvor1jm9L1PDVUwtZgUg
+-> ssh-ed25519 4ep2UA SnRm7O7Lu9ljkA9FrJn+S90TGrE+aXK+WbKAQqJRzVw
+VpqLszwhrXDGdJuv//jrkTXfnqzMbliEEYm3HDCQ+8o
+--- yBFC+vpdV8kCw3toDhSLnWbBdZGWB3E/Ja2N0LwQ7Ws
+î"nõ4°ÎcsÉN·�žÕÍ€u¬yˆµƒ}C×xr␍ìãËõd�ñîÓ^JÄE³cC°5␍Ïï'ƒz–Ì’¡…‹Å‘¯Ñ»n@�ûå&u�ñÿ´¯
+Æ �‡{(p…ˆk«Ø‘— nL[	ÄÿAîÚcô^ìÅsž¤Ãä§È¤‘¢vLA ýÑr²ï4-‚D çû}vÊyÙ aQ

secrets/nebula/hosea.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGkoD6ABWhvc2VhoQcEBQqdAAMQhQRpzYxphgRrrrylhyCDiUxgYHZVqREU7psr
+28dIvONmm6qEFVDsxF47BQdArIIgsu+XmvDcRq7CtqiLC2sSK1eCcZ8XtMSpb1Vh
+64R7NgWDQJYr4aQrWlhuDLZR0ZkRoFYXzj34OpeXDUCFOaTAVoRRHvIvge2umpMa
+YwgjY9reccBqdFRAoAkaJBt6wixrGgs=
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/hosea.key.age

@@ -0,0 +1,37 @@
+age-encryption.org/v1
+-> ssh-ed25519 87huqg btSjOfzdV07UqZLYHUneGnFJowu4FHz9RrJ7+7ddJXs
+58MQvGqjYEnyIh1IVhOv3KmGXXdtJfeehcDYEaLgDso
+-> ssh-ed25519 8UnW5Q zH+7egFzPKq4936zmLu30rDmcKhobhNeDii9KyVBrhQ
+EAktJPVzwbtZW+13QgnTieT5byTAjR9LUHjlJS6qfRg
+-> ssh-ed25519 UFfTmg fdJBTqLeTyz7Xq4zLoGFzkCFpvQ3LwcqfEOMbYrXfGA
+6RMYkDlEKbK7R2/gi/aBv92qZQti4LQxLE5Rkp8QXmQ
+-> ssh-ed25519 xNtnoA qIHYXNrH6/1uW4VhSXc3S3KN0pZnpC5VOlbk8Jcb7F0
+8h/o26hN98uf9kPbupzSX8V+3y163MlZQEi4vZbwDGg
+-> ssh-ed25519 aY2AXA +s/czaDMCl/6RTQSdaOwn4fka9dTTuPppqA3+WDTzD8
+Z6iKe15fqSNMOCku684M9dn1aKKIUzKfLzq/NiF+L7A
+-> ssh-ed25519 AQhf1g 5M4AsA5NVhbBtpeCEk2txeFKq6YvX1R3qiv0Fu5U5XY
+3jrHOW5pKckBvO9IMnNeq1xVWxpdcsZhyzruJZA6m4w
+-> ssh-ed25519 mOmPfg /Ho4F8SLEnZS7XE7L0y0ife5DOLf0QfJCi+alwMDCy8
+vef+X+2AfGZTFY7ktmUhqmRV/RF/XoAfWNIQMUP9KUc
+-> ssh-ed25519 YJiRbw Hmx9RE09dq57CE6av0FA3iDDzFMpQLKLEUpkVymXnTw
+gqniOzWFXAglRhe3oLp2SmtYujUZXwAOa9SsvFTBFEM
+-> ssh-ed25519 0/WsKg EianWFyBA57VdsfY3fTvMCZ7DIvm3t+BhwBtx/qXOzs
+qFxbQsfWbZJQ2vVnVxSdX1hw/MBS0JL44tVKDax4v/8
+-> ssh-ed25519 Nl/5yA OxFWVZhphi0JMr+nco6rEIsOvM4wE0N1tq33V1PODRc
+hb5JOjYomRkz+ERyYeBOmX/ZMW3q8usNvB8yZE8AIpk
+-> ssh-ed25519 GdLgCQ aO0zk3ruD2oBnEJ6fMUv1JmIYWpoo2DgEqC0NpA2fmc
+6PctZY6vS3FnLVW/HbQXLEVKQHN2YGlunexHYTX0Tl0
+-> ssh-ed25519 tOH/HQ Vw8Uv0unsRMzgPE6NZhB1OcnU8C65uer5fJejQH9KzQ
+MpaE+W/Hpm59LYwvGESKn6Bz+236x1pbMup8uZ4z6nc
+-> ssh-ed25519 FpzvfQ 8Q7j/490GgZJf7mc8lsydYOKpyjLSKEXQHqqz+31T0c
+iNlRFeNjVSmsTLEwnuQhKypCOiZ3SCWJXTtz34tPgsg
+-> ssh-ed25519 kdPvzQ AOhJrxYuhkqDVbkhlpGhA925tInO5YfnTCh337LPcms
+kv/RBK7BD/g6mnsGY8jHeXwAM6Pj3PMQ9lx2MOIn1Pg
+-> ssh-ed25519 onmXpg dWB5HHlKL9MqP1a0gnpSSDAOOwLdkdqS92X69ZoYry0
+7W6QYnIGu8iUqGMzUKWOr3AzVjSNegt7BL17ZkP6Z44
+-> ssh-ed25519 CnhD0g 1xYVgHZJImVsk30tT4hC+Wfla0xssBcYS70mAG91h0g
+pSCVA/tSP17FSBqmSx+mQjwwv9SrHgIZiI5g5E9Rkao
+-> ssh-ed25519 4ep2UA 8P+sxx5e/JhdlGQ26EzavfRst+i79kAvAV0iZBRfsCQ
+O2OqHFbZmj1A8Wvj7p66YhpIuPHxFsnnyUt3xLJ6HRQ
+--- Tex+YxBloLbsHGMdMhvYly7XwY8wmSZ2sP3R3J5a0Jw
+ˆìm+	nçy­j¶§.›m'î•1Î;]&}2�LňºZÏlùÉ®|æ„ùjO=¡dE­ºôm>܉×)䩸®½Tu`–©rb:¯ØÃ!ŽZh6GÃÙ׃Ö?íOyGùÃ	õ_‹Îó„¯Ü­lQÐf°ËÙ”½nâ½"ßnêÎs£Žm‡rDUœôr})ExjhçÜ‘ eŒêi“ªt

secrets/nebula/isaiah.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGloD+ABmlzYWlhaKEHBAUKnQAEEIUEac2MaYYEa668pYcgg4lMYGB2VakRFO6b
+K9vHSLzjZpuqhBVQ7MReOwUHQKyCIBv+1Lr/E3Q6d99laLGdXRTss2SIL4OGBp8z
+qqfEsAMpg0CyDSEYuL8GaHQq708GbCxhxFifCZaRTB+ReGBScmhT9XhIwSLHRRZJ
+1TmoY4QvrdPOS3NAWvlawk/JUqN7SWQL
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/jeremiah.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGnoEGACGplcmVtaWFooQcEBQqdAAUQhQRpzYxphgRrrrylhyCDiUxgYHZVqREU
+7psr28dIvONmm6qEFVDsxF47BQdArIIgHXr6BLGmqfF92GXiN6MBj3ac0p/EtNYf
+xR3/EdI5GnGDQIFxfV5fVwi26+IRk9QIFxyyFBtmsZyPbdxL8ca1WUPm3lCNA4BT
+Knd9Y3Zlp6L35L4/dzSqAVoXu2nlHF6SOAA=
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/jeremiah.key.age

@@ -0,0 +1,38 @@
+age-encryption.org/v1
+-> ssh-ed25519 87huqg oq74sKlsXTuQiPF3vIpfFbXh4fLRWoEprZ1h5MFiyWQ
+58TOYaLR4Afm2ZSpWOHbr5ZWhzT08VSP+v9U0/lAXfs
+-> ssh-ed25519 8UnW5Q TBEe5WrfKcXulpJo6yKUdQJHwuSyJiXQRfcwL43V0mo
+dTYL5omLZDCmbExfcTwfENbh0/U3h651V8f6pHkSyw8
+-> ssh-ed25519 UFfTmg wmSLwX0Wi3z2pT1Ag5QzalAFmFnPTBH1kXBsfg+98m4
+V3unDcMC3pPlFJpG5yFi+wdCUzJEcXcxEUPOtug8v10
+-> ssh-ed25519 xNtnoA P/DzjGiesuoFbsUHf2hrtm1hYn7QDlHEM4Pn+HPp51I
+EwByGfMGGByPJeP+fC1fXtXwjtH81NSjcmBkR1Yspzo
+-> ssh-ed25519 aY2AXA Ffs4EXgQ+3UknIyTWZNfsDJY/uwM2JGMKYgoZq4SQ3Q
+ZwVfFdBdEtswaNMNcmX1sCJrEOHt10M17AFH08kKNpQ
+-> ssh-ed25519 AQhf1g FBnnAMCfUus06OPeLIhoV4yeSXdY8DGz3w9PCOuHYEY
+OmqAuVpc6UnvShK8wMbHboAlDq/TlNQkEnUX36duOWk
+-> ssh-ed25519 mOmPfg /HHd/eEJjAlj83IwGtE+Hsk5dVjWYYoChFrm+Tb2g3E
+f+S6iK6fNcKoCMDnH7HLC3LrZk/jwpfxCi6DFgFuW5Q
+-> ssh-ed25519 YJiRbw 3iblt4OCf+OOgriTYMWDDI9FhFCQQwR19pWpgyfh+Gk
+RaIjKHzOoiEdpedS3GBeBrq9M3OZs8CHPuMdzph9Gj8
+-> ssh-ed25519 0/WsKg hLS/sxN+t8LdaTLp5qIRodex6Qc2DhE3ljL65cHbUDA
+X6S4fFz6v70UC8BpXCnFvvHpsKpGett2s5wthsCjBJ4
+-> ssh-ed25519 Nl/5yA rJF2bbel2dZhH7CuC99TnG281c+9cUPF7+u0QmJ5oBU
+Pqr5fWB94NJHM4Py8sqleDgE6A26PGCTmjVv2e+t2EM
+-> ssh-ed25519 GdLgCQ wqdRmufRVW/GKqAl0UqPBUQXVUHRD1wC8dJVlcKS4kA
+MdsqIGyyMiEcF1lwnlv2JACQaoT0ryepkGYb80odJBI
+-> ssh-ed25519 tOH/HQ zFxCw9h85aJj81i07vWMsOR1VQdwebrNutvpftfobl4
+kJHWriqUGEYtWIAye6S5hLiuMnYybMmM/eI2X88WAbI
+-> ssh-ed25519 FpzvfQ +iEyOgAINtNgxctHfMt+Fj/4eGZVjsTB4godZj2UMlE
+sMrf5bW23oTEo9kQVuCmJGsMrzAFB/C3S+tEMf2sDSw
+-> ssh-ed25519 kdPvzQ 8aLywX0Y8/UbEwrH90/Y5/6bwKpkY3sEP9xcn7YAuk0
+jkXdLMmD5Xm+0Sl7nCrxcrHTG7/QD1Su0ODvna5mHN0
+-> ssh-ed25519 onmXpg qAUGZKgUjAAdlaqcOrl8TSZVUlPaECW5DDrkdWZjAUo
++PfGPASqJ84Czlco8ZUuE/wyE+rl9ww2iep9zs/9LwU
+-> ssh-ed25519 CnhD0g oVxR+8Xe9qQY8y6sCFWbqHxGPj1ECqISXMU7KAw6nUQ
+tU4/lvxoK/KV7R+3L9IiJTidodtAySAzkIXTc33vyaA
+-> ssh-ed25519 4ep2UA m+GmFvXANTiMr6U02p3GWDLr4Alk78Ae6+ePkk2qCVY
+gzufOMJbBdhqb8/VIHyLVwDfShMkYZm3Y2wbPlC4GA8
+--- 4papXHguyw6dkzGpQOp1G0uK/ztnh8vxaYzJGaDlVmE
+4ú7 ~Mãû…¬’òÙ8&Á'Xbãe ¯_·èèÿ¬­íÇ ís8xKÕ�g|qMžZ>éÕåÕ´c^㛯·1ëƒê–,E£nÔH»Ë�]LÅŒ{öIEøÉ«jY—Я‡¿úõq 2›IF³ÕÄY|%²Õ
+–ImÚx•¦Øh@xzÁ	.j�ö»÷KSV.¯-ü%Ô;�~É–1

secrets/nebula/linode.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGloD+ABmxpbm9kZaEHBAUKnQABEIUEac2aEoYEa668pYcgg4lMYGB2VakRFO6b
+K9vHSLzjZpuqhBVQ7MReOwUHQKyCIEFgo5SZK7RybOKbcnXELxD4/L6k6y/YWOoJ
+gGfhTdE0g0BeK8VBDuyxp+5rBUWhJaYMBfWJ2qidGwpeGQ+KgVew5auaf+wv4vek
+LopzejwCv7rKAIKoB7fNO1HDbYw2WXYG
+-----END NEBULA CERTIFICATE V2-----

secrets/nebula/linode.key.age

@@ -0,0 +1,38 @@
+age-encryption.org/v1
+-> ssh-ed25519 87huqg DhN/+7v38sO9JrmbpYWtu324Giuair8QxWiDQCSt5gk
+Waw20Mw9N+8HVLfpmAb6bxtwNTOJKIQNF9RAt2CizaM
+-> ssh-ed25519 8UnW5Q 7xjuMFRQnDI0EVMIG3r+lBQ/iQp+5cuP/e8Hd1Z6yl8
+7YKREAZx2VSXr1SdiVuSbi8zzsbgWo7oXhwQmTCxC00
+-> ssh-ed25519 UFfTmg ZYevBcuVZGZM/00QmV5exil67o6Dvu51PS8d5LDSmWE
+ddT6lI7aWXeefOuUoU3YdNBY/ZTqwVmAAtJY2FPUYRY
+-> ssh-ed25519 xNtnoA TE1vwgCi+E3yTyIdLlC6Yj9ZsNDKqwN/bqwtB2SZXnI
+tle+S8sDQQcADhsiwmHCZpgu3WxfVujDeZeaie3wIi0
+-> ssh-ed25519 aY2AXA Mgq42aCTJTM5wTrsBB/WiX8oA9cQZkeTNg2e/jkqSX4
+Ken49j/VMBWMr9jmwEi1RjiDThmUR9rUhVqyiMTrhNc
+-> ssh-ed25519 AQhf1g /6VEx46A9pI/UZnu25SOnSND+weefGyjbX63WclcgBo
+MI7RqhtaEd4FWjIrZNYRiGU9ukiRMfFYW73NC9Pn0n4
+-> ssh-ed25519 mOmPfg rQC30TaeT1LvDO1AsjfLrGRLpolDPoCAjtjvk5jpM3A
+Mtvq40Vkdy8GlYYRADERH7R7TrOrMmgc4L53a2S53X0
+-> ssh-ed25519 YJiRbw pjzxg4h4RsReraBckNC4lrou7mrcLrFMKBQFelVZIS8
+nSp+SiiR28F2qEyQOmtkyjLI8me5soL99ZfX2CyCtOQ
+-> ssh-ed25519 0/WsKg gJDZIO6jB2X7JcxvBQoKUjs+CmC3dM7/o86ayxuzDAM
+J1GJ8QCsdm+MV5vLKy0lDEZphcqtncdHA3Uhswtbjfk
+-> ssh-ed25519 Nl/5yA k+mNdOtNlcUtvijYanWqE6Jqx3BtssT9WlgrII53JFY
+qMFDbWsK7oqkn3+n29pupruUH1aL1GJTPdnHcd/saaU
+-> ssh-ed25519 GdLgCQ s1oCQaEMJamaGiUNwRJYGDmcnmjMs/pSUDp8MW0biy4
+ckhFXcx1t18WjY/W1urrNmZ9qab3dIlEqs5e1AaJrjE
+-> ssh-ed25519 tOH/HQ EDPn55ZqtWAphmJJw+zW7RowoLyZ5Vo5Rn6LcmtHGxA
++HSdz8oRjjr+2oXPcce5u72z7iN5LmFRULxVhCsFenY
+-> ssh-ed25519 FpzvfQ tJYYwIiFw+kdI6LHBd1QSh3eRprF9pTubyLfUN+JsXQ
+zSR6ptxNZNLuktnRdw6wzf2TwRh5sBncJgZfqSBGMc8
+-> ssh-ed25519 kdPvzQ WiR1O62lBJQCzQF021arLQuEKJOQm3mqa5dy927IFlE
+asbdcEecJRVTaasDhtAb2mB6p8gELA53nHG0bhp9j4w
+-> ssh-ed25519 onmXpg IlP7xoTg6qbCbeg4c7jGtUTueI2q5OWT8ot/tBZW0HY
+kHNPz3hUsQZuwsJRol6BwvExp8keJzcl0K4G9VELcBk
+-> ssh-ed25519 CnhD0g wVmnrThi15hQJ1JIiazwo9Tk8Hns9ALkG1Aps8gcYz4
+sSy1EVAvdZAWyDI6WJfs+UQ3E8SCGq+qVQzVhrd/GXw
+-> ssh-ed25519 4ep2UA nUckpcS8Sa5+RF7/Z5nexV7S5h9hFoj+UAfFzq7lQwk
+hrZPftJLld4FvSDnsQC7zb/yLJujY7Jm4wki1qHunoY
+--- o/cAY7EryjxlJn9BxuyQQE1s1Bwj8AIupTBMEAz+CLo
+®_PLÒ‹"oĨ0ÊN›ô’†%käóf�®Ï�.[´
«»ÕZUt
¬þI,¼f驱òý‰ù
+ÚÏ™ÕzögQÑ]¶LèY¹rŒB�Òqãõ-R„Ñ—¥Àsñôy¥L…™ÔfÎYÚ*IÈú‡àif’V©')újV’8÷Ž–␍h0ë}f Öãòœ[Ó£RÄ!í{Õ‡TÚMthÏ

secrets/nebula/zeke.crt

@@ -0,0 +1,6 @@
+-----BEGIN NEBULA CERTIFICATE V2-----
+MIGjoD2ABHpla2WhBwQFCp0ABhCFBGnNjGmGBGuuvKWHIIOJTGBgdlWpERTumyvb
+x0i842abqoQVUOzEXjsFB0CsgiCirKKbej7yAALn41C+MYmertD9LOv09gZ61ODF
+wEcnB4NAfix/r3q+XLYe3egKUoqJUW2i11x0ST0hxqhJUd8LjHKirRyHsvUraMbG
+c8x+CXsCPLgheGt548PpmrObQWtrBA==
+-----END NEBULA CERTIFICATE V2-----

secrets/secrets.nix

@@ -137,4 +137,14 @@ in
   "compose/attic.env.age".publicKeys = everyone;
 
   "grafana-api-token.age".publicKeys = everyone;
+
+  # Nebula mesh network — one private key per host, encrypted to that host's
+  # system key + all user keys so Greg can (re)encrypt them from any machine.
+  "nebula/genesis.key.age".publicKeys = everyone;
+  "nebula/hosea.key.age".publicKeys = everyone;
+  "nebula/isaiah.key.age".publicKeys = everyone;
+  "nebula/jeremiah.key.age".publicKeys = everyone;
+  "nebula/linode.key.age".publicKeys = everyone;
+  "nebula/zeke.key.age".publicKeys = everyone;
+  "nebula/exodus.key.age".publicKeys = everyone;
 }