Files
nixos/network.json
T
root 792217f640
buildbot/nix-eval Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-exodus Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-isaiah Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-genesis Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-linode Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-jeremiah Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-zeke Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-hosea Build done.
buildbot/nix-build Build done.
feat: add Nebula mesh network overlay
Introduces a greg.nebula NixOS module and enables it across all managed
hosts for the nebula.thehellings.com overlay (CIDR: 10.157.0.0/16).

Architecture:
- linode: lighthouse + relay (public internet, UDP 4242)
- genesis: regular node + unsafe_routes router for 10.42.0.0/16 (home LAN)
- hosea, isaiah, jeremiah, zeke, exodus: regular nodes with unsafe_routes
  pointing to genesis to reach the home LAN

Changes:
- modules/nixos/nebula.nix: new greg.nebula module
  - isLighthouse / isRelay options
  - unsafeRoutes option (tun.unsafe_routes)
  - routesSubnet option: enables IP forwarding + nftables masquerade NAT
    on the gateway host (genesis) so Nebula peers reach 10.42.0.0/16
  - agenix secret reference per-host (secrets/nebula/<name>.key.age)
  - opens UDP/4242 in the firewall
- modules/nixos/default.nix: import nebula.nix
- hosts/unstable/linode/default.nix: greg.nebula.isLighthouse = true
- hosts/unstable/genesis/default.nix: greg.nebula.routesSubnet = "10.42.0.0/16"
- hosts/unstable/{hosea,isaiah,jeremiah,zeke,exodus}/default.nix:
  greg.nebula.enable = true with unsafeRoutes via genesis
- network.json: add nebulaIp field for each managed host
- secrets/secrets.nix: declare nebula/<host>.key.age entries
- secrets/nebula/README.md: full PKI bootstrap guide (CA, certs, agenix)
2026-03-28 23:24:52 -05:00

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{
"infra": {
"dns": "10.42.1.5",
"gw": "10.42.1.1",
"netmask": "255.255.0.0",
"prefix": "16"
},
"hosts": {
"chronicles": {
"ip": "10.42.1.4",
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEBecZUva9OnZuXLaBun6/1ITo5f9p0YMLPD+q0egLRS",
"external": true,
"ts": "100.119.228.115"
},
"exodus": {
"ip": null,
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFxmnCj2E9DxcnefPW+n4yCuLShxqr0p024riogdeXA3",
"ts": "100.70.99.91",
"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"
],
"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"
],
"nebulaIp": "10.157.0.3"
},
"icdm-root": {
"external": true,
"system": "x86_64-linux"
},
"isaiah": {
"builder": true,
"ip": "10.42.1.6",
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHleYKtfV4W1Z63Ysu9w5Rbglqlz4F92YcZoMkucoTNf",
"ts": "100.84.183.79",
"system": "x86_64-linux",
"systems": [
"x86_64-linux",
"aarch64-linux"
],
"tags": [
"builder",
"kube",
"server"
],
"nebulaIp": "10.157.0.4"
},
"iso": {
"external": true,
"system": "x86_64-linux"
},
"ivr": {
"external": true,
"system": "aarch64-darwin"
},
"jeremiah": {
"builder": true,
"ip": "10.42.1.8",
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOjQjXq9WYU2Ki27BR9WwJ4ZruS/lJXbjC1b0Q42Adi0",
"ts": "100.102.186.39",
"system": "x86_64-linux",
"systems": [
"x86_64-linux",
"aarch64-linux"
],
"tags": [
"builder",
"kube",
"server"
],
"nebulaIp": "10.157.0.5"
},
"joel": {
"external": true,
"ip": "10.42.0.4",
"ts": null
},
"linode": {
"ip": null,
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMv9Zud3kZOl86gtmkn+uj3D4kiXWDPtyUL02VVLNR4Q",
"ts": "100.109.86.8",
"system": "x86_64-linux",
"tags": [
"public",
"server"
],
"nebulaIp": "10.157.0.1"
},
"MacBook-Pro.local": {
"external": true,
"system": "aarc64-darwin"
},
"MacBook-Prolocal.local": {
"external": true,
"system": "aarc64-darwin"
},
"nas1": {
"external": true,
"ip": "10.42.1.14",
"ts": "100.114.187.61"
},
"nixos": {
"external": true,
"system": "x86_64-linux"
},
"proxmoxtemplate": {
"external": true,
"system": "x86_64-linux"
},
"gitlab": {
"system": "x86_64-linux"
},
"wsl": {
"external": true,
"system": "aarch64-linux"
},
"zeke": {
"builder": true,
"ip": "10.42.1.13",
"pubkey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOos0zQePsa+T6Z2dsKbPOvEdrBQ8a6mx3s7pN6ysCI0",
"ts": "100.90.74.19",
"system": "x86_64-linux",
"systems": [
"x86_64-linux",
"aarch64-linux"
],
"tags": [
"builder",
"kube",
"server"
],
"nebulaIp": "10.157.0.6"
}
}
}