Files
homelab/hosts/mars/configuration.nix
darmanandClaude Sonnet 5 6f24ab69ad docs: condense comments across the repo
Comments had drifted into multi-paragraph narrative (git commit
lineage, debugging stories, restated code) in several hot spots
(scripts/deploy, hermes-agent.nix, flake.nix, gitea.nix, headscale.nix).
Trim every comment to its load-bearing "why" — gotchas, safety
warnings, and non-obvious rationale survive verbatim in substance,
just tightened to 1-2 sentences; historical narrative and anything
already covered in CLAUDE.md is cut. No code/logic changed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UJqEmY1y3AYX3JoX4Y6b21
2026-09-18 21:36:30 +02:00

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2.2 KiB
Nix

{ config, pkgs, ... }:
# mars — on-site x86_64 box for Hermes Agent (luna), plus the web apps she
# hosts herself. See hermes-agent.nix for what Hermes is and why it moved here
# from jupiter, and luna-sites.nix for the app hosting.
{
imports = [
./hardware-configuration.nix
./disk-config.nix # disko: OS-disk partitions + filesystems
./secrets.nix # sops-nix: samba/tailscale/hermes secrets
./hermes-agent.nix
./livesync-bridge.nix
./luna-sites.nix # luna's LAN web apps: http://mars.sol/<name>/
../../common.nix # shared base: user / ssh / nix / firewall
../../services/containers.nix
../../services/vpn/tailscale.nix
../../services/monitoring/node-exporter.nix
];
networking.hostName = "mars";
networking.networkmanager.enable = true; # DHCP on-site, same as jupiter
users.users.darman.extraGroups = [ "docker" ]; # merges with common.nix; podman debug access
# ---- Boot (UEFI, confirmed) ----
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
# jupiter's samba share (services/network/samba.nix), mounted on demand so
# mars doesn't stall when jupiter is off — also where Hermes's shared
# dropbox lives (hermes-agent.nix). Tighter modes than terra's equivalent
# mount (0770/gid=hermes, not 0755/gid=users) since the hermes-agent
# container (uid 986/gid 983, no podman userns remapping) needs group
# write here, not just darman.
fileSystems."/mnt/jupiter" = {
device = "//jupiter/data";
fsType = "cifs";
options = [
"credentials=${config.sops.templates."jupiter-smb.credentials".path}"
"uid=1000"
"gid=983"
"file_mode=0770"
"dir_mode=0770"
"nofail"
"x-systemd.automount" # lazy-mount so boot doesn't stall if jupiter's down
# NO idle-timeout here (unlike terra's): podman-hermes-agent.service
# RequiresMountsFor this path, so an idle auto-unmount silently kills
# the container with it — confirmed the hard way (~60-70s per start).
"x-systemd.mount-timeout=10s"
"_netdev"
];
};
system.stateVersion = "26.05"; # set at install time; do NOT bump on upgrades
}