nixos/variables.nix

{
  # Network / domains
  lanDomain = "gitea.lan.ddnsgeek.com"; # Gitea/DDNS domain
  homeDomain = "sweet.home"; # base LAN domain for service subdomains (pve., docker.)
  tailnetDomain = "tail13f623.ts.net"; # Tailscale MagicDNS suffix
  lanCidr = "192.168.2.0/24"; # LAN subnet
  lanGateway = "192.168.2.254"; # LAN default gateway (router)
  lanPrefixLength = 24; # LAN subnet prefix length (/24 = 255.255.255.0)
  lxcLanInterface = "eth0"; # LAN NIC name in LXC containers (set by Proxmox --net0 name=eth0)
  vmLanInterface = "ens18"; # LAN NIC name in Proxmox VMs (virtio, first NIC)
  vmStorageInterface = "ens19"; # storage NIC name in HA server VMs (virtio, second NIC on vmbr1)
  pxeServerIp = "192.168.2.223"; # pxe-boot LXC container LAN IP
  nixCacheIp = "192.168.2.224"; # nix-cache LXC container LAN IP
  tailscaleRouterIp = "192.168.2.222"; # tailscale-router LXC container LAN IP
  torRelayIp = "192.168.2.221"; # tor-relay LXC container LAN IP
  serverIp = "192.168.2.226"; # server (NFS/ZFS) Proxmox VM LAN IP
  dockerIp = "192.168.2.225"; # docker Proxmox VM LAN IP
  pbsIp = "192.168.2.244"; # Proxmox Backup Server LAN IP (not NixOS-managed)
  domainControllerIp = "192.168.2.253"; # FreeIPA domain controller / primary DNS (not NixOS-managed)

  # Cross-host references (LAN hostnames/users other hosts reach over the network)
  nixCacheHost = "nix-cache"; # substituter/remote-builder hostname
  nfsServerHost = "server"; # NFS export source hostname
  dockerHost = "docker"; # docker-compose stack host

  # Raspberry Pi's own Tailscale hostname (not fronted by `server` — it
  # exports its own NFS share directly). Resolved as
  # "${raspberryPiHost}.${tailnetDomain}" in modules/raspi/mount-data.nix.
  raspberryPiHost = "raspberrypi";

  remoteBuilderUser = "nixremote"; # remote builder SSH user

  # nix-cache's own SSH host public key (not a secret — the private half
  # never leaves the host). Wired into every client's
  # programs.ssh.knownHosts by modules/nix-cache/remote-builder-client.nix
  # so distributed builds don't hit "Host key verification failed" on a
  # fresh client that has never manually ssh'd to nix-cache before. Update
  # this if nix-cache's host key is ever rotated or the host is rebuilt
  # from scratch.
  nixCacheHostKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICuHUxGNH6ei3BZD+EfZs3l4X8uJNcjQiOsM/G4yo4O/ lxc-nix-cache";

  # Public keys authorized to SSH in as remoteBuilderUser on the nix-cache
  # host (modules/nix-cache/server.nix) — one per client host that's allowed
  # to use it as a distributed builder.
  remoteBuilderAuthorizedKeys = [
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFDEA1S2ikpObREgbP5uVBWMxIOGbY8B+Wx7VTZK1m6t root@server"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPAYIT9ormlmxZ0SziyDQaUntnKI8HK9/s3Qac1ZKjP2 root@docker"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKKKzoEPl/ZW9KBRHBcp6/ThOngGpwMv5EhkTlgC4aDf root@nixos"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIGtOWOCS+ImHc7NehguoyD7PbonGosKMZqc9+QR3v/h root@nixos"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHxXTQxFnArK5HXG7czeoybZebCGfxpUdusJkPn+BCSp root@server"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICMJhrfFayLBG+gWtO6oAvgambw5nWWgztiTFEaaaVRH debian@surface"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEj26SL/emsVjW2YhRucJVp2kTz8WgcEQgjBEBLRikk root@claude"
  ];

  # Admin SSH public key, authorized on the primary user of every host and
  # the installer image's nixos/root users.
  adminSshKey = "ssh-rsa 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 wayne@stream";

  # Prestaged wifi SSID for the gui host's NetworkManager profile
  # (modules/networking/wifi.nix). The password is not here -- it's
  # sops-encrypted in secrets/gui.yaml (wifi-password) instead, since this
  # file isn't a secret store.
  wifiSsid = "nbn-fttp-net-5G";

  # Bare-metal gui host's two disks for a ZFS RAID0 (striped) root pool
  # (modules/disko/baremetal.nix). Only used transiently at disko-format
  # time (partitioning); the resulting fileSystems/zpool import reference
  # by-partlabel/by-id paths afterward regardless, same as
  # modules/disko/proxmox.nix's own plain "/dev/sda".
  guiRootDisk1 = "/dev/sda";
  guiRootDisk2 = "/dev/sdb";

  # System
  timeZone = "Australia/Brisbane";

  # Main interactive user on every host. Every module that grants this user
  # a group, a home directory, or tmpfiles ownership should reference
  # vars.primaryUser rather than the literal "nixos", so renaming it is a
  # one-line change.
  primaryUser = "nixos";

  # HA file server cluster
  # LAN IPs (vmbr0 / ens18) — client-facing: iSCSI initiators, NFS, management.
  # Storage IPs (vmbr1 / ens19) — isolated internal bridge, used for DRBD
  # replication and Corosync heartbeat only; never leaves pve1.
  # haServerVip: floating virtual IP managed by Pacemaker's IPaddr2 resource;
  # NFS and iSCSI clients connect here regardless of which node is Active.
  haServer1Host = "ha-server-1";
  haServer2Host = "ha-server-2";
  haServer1Ip = "192.168.2.228"; # LAN IP, node 1
  haServer2Ip = "192.168.2.227"; # LAN IP, node 2
  haServerVip = "192.168.2.229"; # floating VIP (Pacemaker IPaddr2)
  haServer1StorageIp = "192.168.4.228"; # storage-net IP, node 1 (vmbr1 / ens19)
  haServer2StorageIp = "192.168.4.227"; # storage-net IP, node 2 (vmbr1 / ens19)
  haStorageCidr = "192.168.4.0/29"; # storage subnet — internal to pve1 only
  haStoragePrefixLength = 29; # storage subnet prefix length (/29)
  haStorageRoot = "/srv/ha-data"; # XFS-over-DRBD mount point on the Active node
  haIscsiIqn = "iqn.2026-01.home.sweet:ha-storage";

  # Storage
  storageRoot = "/tank"; # ZFS pool root on `server`

  # NFS datasets exported from `storageRoot` on `nfsServerHost` and mounted
  # by client hosts. `subpath` is relative to `storageRoot` — combined with
  # it to build both the export line in modules/build-types/server.nix and
  # the "<nfsServerHost>:<storageRoot>/<subpath>" device string each client
  # mount uses in modules/docker/mount-data.nix. `mountpoint` is the
  # absolute local path clients mount it at, referenced by that same file's
  # fileSystems attribute name plus every other place that needs to know
  # where the share lives locally (modules/build-types/docker.nix's
  # tmpfiles rules, modules/traefik/rotate-logs.nix's log path). Renaming a
  # dataset or moving where it's mounted only needs changing it here — the
  # export and every client reference follow automatically.
  nfsShares = {
    options = "(rw,sync,no_subtree_check,no_root_squash)";
    dockerConfig = {
      subpath = "docker/config";
      mountpoint = "/mnt/docker/config";
    };
    dockerDatabases = {
      subpath = "docker/databases";
      mountpoint = "/mnt/docker/databases";
    };
    dockerVolumes = {
      subpath = "docker/volumes";
      mountpoint = "/mnt/docker/volumes";
    };
    nextcloudData = {
      subpath = "docker/nextcloud-data";
      mountpoint = "/mnt/nextcloud-data";
    };
    raspiVolumes = {
      subpath = "raspi/volumes";
      mountpoint = "/mnt/raspi-backup";
    };
    proxmoxIsos = {
      subpath = "proxmox/iso";
      mountpoint = "/mnt/iso";
    };
    proxmoxLxcImages = {
      subpath = "proxmox/lxc";
      mountpoint = "/mnt/lxc";
    };
    pxebootImages = {
      subpath = "pxe-boot/images";
      mountpoint = "/mnt/pxe-images";
    };
  };

  # The Raspberry Pi's own NFS export — not under storageRoot/nfsServerHost,
  # served directly by the Pi itself over Tailscale (see raspberryPiHost
  # above) and mounted at raspiMountpoint by modules/raspi/mount-data.nix.
  raspiNfsPath = "/home/raspi/raspi";
  raspiMountpoint = "/mnt/raspi";

  # Every literal port referenced from modules/ or hosts/, grouped by the
  # service/host that opens or connects to it — kept as separate entries
  # even where two happen to share a number today (e.g. nixCacheHttp and
  # pxeBootHttp are both 80) so changing one service's port can never
  # silently change an unrelated one.
  ports = {
    # nix-cache's nginx reverse proxy in front of nix-serve
    # (modules/nix-cache/server.nix).
    nixCacheHttp = 80;

    # pxe-boot's nginx asset server, also used to build pxeBaseUrl
    # (modules/build-types/pxe-boot.nix).
    pxeBootHttp = 80;

    # pxe-boot's atftpd TFTP server — UDP, not TCP
    # (modules/build-types/pxe-boot.nix).
    pxeBootTftp = 69;

    # `server`'s NFS exports: portmapper (rpcbind), NFS data, and the
    # mountd RPC service (used by showmount/NFSv3 mount protocol).
    # Mountd listens on a fixed port so the firewall can whitelist it
    # explicitly rather than opening all of rpcbind's dynamic range.
    # All three need both TCP and UDP (modules/build-types/server.nix and
    # modules/build-types/ha-server.nix).
    nfsRpcbind = 111;
    nfsd = 2049;
    nfsMountd = 20048;

    # HA cluster ports opened on ha-server-1 and ha-server-2
    # (modules/build-types/ha-server.nix / modules/ha/cluster-config.nix).
    haServerDrbd = 7789; # DRBD replication (TCP)
    haServerIscsi = 3260; # iSCSI target (TCP)
    haServerCorosync1 = 5404; # Corosync totem ring (UDP)
    haServerCorosync2 = 5405; # Corosync totem ring (UDP)
    haServerCorosyncCrypto = 5407; # Corosync crypto sync (UDP)
    haServerPacemakerRemoted = 3121; # pacemaker-remoted (TCP)
    haServerPcsd = 2224; # pcsd cluster daemon (TCP)

    # Opened on the docker host's firewall for the Traefik-fronted
    # container stack (docker-compose config lives in the separate
    # /home/debian/docker repo, not here): 80/443 are Traefik's own
    # HTTP/HTTPS listeners; 8080 is an additional exposed service whose
    # exact backend isn't declared in this repo (modules/build-types/docker.nix).
    dockerHttp = 80;
    dockerHttps = 443;
    dockerExtra = 8080;

    # Beszel monitoring hub, reachable at
    # http://<dockerHost>.<homeDomain>:<beszelHub> from every agent
    # (modules/beszel/enable-agent.nix, hosts/nixos/home.nix).
    beszelHub = 8090;

    # Proxmox VE and Proxmox Backup Server web UIs, opened as desktop
    # shortcuts on the gui build type (hosts/nixos/home.nix).
    pveWeb = 8006;
    pbsWeb = 8007;

    # Tor relay's ORPort — the port other Tor relays connect to for onion
    # routing traffic (modules/tor/enable-relay.nix). Tor's own conventional
    # default; opened via services.tor.openFirewall rather than
    # networking.firewall.allowedTCPPorts directly, but kept here anyway so
    # it's not a bare literal duplicated between the relay's settings and
    # anything else that ever needs to reference it.
    torRelayOrPort = 9001;
  };

  # .raw disk image size for every proxmox-* host's standalone Disko image
  # build (modules/disko/proxmox.nix, config.system.build.diskoImagesScript
  # — see docs/proxmox-images.md). Root fills whatever's left after the ESP
  # and swap partitions within this total.
  proxmoxImageSize = "50G";

  # nix-cache's Nix store garbage collection retention
  # (modules/nix-cache/server.nix).
  nixCacheGcMaxAge = "30d";

  # Traefik access log rotation, watched on the docker host at
  # nfsShares.dockerVolumes.mountpoint (modules/traefik/rotate-logs.nix).
  traefikLogRotate = {
    maxSize = "100M"; # rotate once a log file exceeds this size
    keep = 20; # number of rotated logs to retain before deleting the oldest
  };

}