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nixos/modules/build-types/ha-server.nix
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beatzaplentyandClaude Sonnet 4.6 e62e9c9a6a
Check NixOS configurations / eval-hosts (pull_request) Successful in 10m40s
chore: full sweep — docs sync, SSH key module extraction, NFS dedup, dead code removal
Documentation fixes:
- README/AGENTS: rename tailscale-exit-node → tailscale-router, add ha-server
  build type and proxmox-ha-server-{1,2} host table rows, add baremetal to
  platform list, remove references to non-existent flake-target-refactor-spec.md
  and remove-sensetive-info-refactor.md
- docs/auto-installer.md: fix lxc-tailscale-exit-node → lxc-tailscale-router,
  add pxe-minimal to the flake outputs list
- variables.nix: fix domainControllerIp comment — IPA is the authoritative DNS
  at .253 (Pi-hole is gone), not a forwarding intermediary

Code deduplication:
- Extract duplicate SSH host-key preservation activation scripts from
  modules/platforms/lxc.nix and modules/platforms/proxmox.nix into a shared
  modules/common/preserve-ssh-host-key.nix; both platforms now import it
- Replace 8-line hand-enumerated NFS export lists in server.nix and ha-server.nix
  with a mkNfsExports helper that generates exports from vars.nfsShares — adding
  a share to variables.nix now propagates to both exporters automatically

Dead code removal:
- modules/common/configuration.nix: remove leftover NixOS skeleton comments
  (hardware-configuration import, grub lines) that were never used
- modules/docker/enable-service.nix: remove commented-out listenOptions and
  daemon.settings blocks
- hosts/server/host.nix, hosts/nix-cache/host.nix: remove #DOCKER_HOST comments

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-07-28 15:18:06 +10:00

45 lines
1.8 KiB
Nix

# HA file server build type: DRBD + XFS + LIO iSCSI + NFS, managed by
# Corosync + Pacemaker. Both ha-server-1 and ha-server-2 use this type.
#
# NFS start/stop:
# services.nfs.server.enable = true configures /etc/exports, wires up
# rpcbind, and loads kernel modules — but nfs-server.service.wantedBy is
# force-cleared so systemd does NOT auto-start it at boot. Pacemaker's
# ha-group resource group (configured by scripts/ha/cluster-init.sh)
# starts and stops nfs-server as part of the failover sequence after the
# XFS mount and iSCSI target are brought up on the new Active node.
#
# Beszel agent:
# Enabled here via enable-agent.nix. The agent KEY (used to pair with
# the Beszel hub) is not set yet — add it to hosts/ha-server-{1,2}/host.nix
# under services.beszel.agent.environment.KEY once the hub accepts the
# new agents, following the pattern in hosts/server/host.nix.
{ lib, vars, ... }:
let
# Generates /etc/exports lines for all nfsShares data entries. Shared
# pattern with modules/build-types/server.nix — both export the same
# set of shares, differing only in the storage root they serve from.
mkNfsExports = storageRoot:
lib.concatMapStrings
(share: " ${storageRoot}/${share.subpath} ${vars.lanCidr}${vars.nfsShares.options}\n")
(lib.filter builtins.isAttrs (lib.attrValues vars.nfsShares));
in
{
imports = [
../ha/pacemaker-stack.nix
../ha/iscsi-target.nix
../ha/cluster-config.nix
../beszel/enable-agent.nix
];
services.nfs.server = {
enable = true;
exports = mkNfsExports vars.haStorageRoot;
};
# Pacemaker controls nfs-server — prevent systemd from starting it at boot
# on both nodes (only the Active node should be serving NFS).
systemd.services.nfs-server.wantedBy = lib.mkForce [ ];
}