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nixos/modules/nix-cache/server.nix
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beatzaplentyandClaude Sonnet 5 0ba837817e Expand variables.nix: NFS shares, ports, image size, GC/rotation, Pi host
Adds nested vars.nfsShares (subpath + mountpoint per dataset, previously
duplicated independently across server.nix's NFS exports, mount-data.nix's
client mounts, docker.nix's tmpfiles rules, traefik's log rotation path,
and hosts/server/host.nix's beszel config), vars.ports (every literal port
in modules/ and hosts/, kept as separate entries per service even where
numbers coincide so changing one can't silently change another), plus
vars.proxmoxImageSize, vars.nixCacheGcMaxAge, vars.traefikLogRotate, and
raspberryPiHost/raspiNfsPath/raspiMountpoint for the Pi's own NFS export.

Also fixes docker.nix/minimal.nix/gui.nix hardcoding the literal "nixos"
username instead of the existing vars.primaryUser, found during the sweep.

system.stateVersion is deliberately left untouched everywhere -- per
NixOS's own docs that value must stay fixed from first install, not
follow any shared variable.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01La55Nsss8jZ7ZuzUV9mfot
2026-07-20 08:27:37 +10:00

60 lines
1.7 KiB
Nix

{ config, pkgs, vars, ... }:
{
# Generate the binary cache key pair on the nix-cache host:
# sudo install -d -m 0700 /etc/nix
# sudo nix-store --generate-binary-cache-key nix-cache-1 \
# /etc/nix/cache-priv.pem \
# /etc/nix/cache-pub.pem
# sudo chmod 0600 /etc/nix/cache-priv.pem
# sudo chmod 0644 /etc/nix/cache-pub.pem
# cat /etc/nix/cache-pub.pem
services = {
nix-serve = {
enable = true;
secretKeyFile = "/etc/nix/cache-priv.pem";
};
nginx = {
enable = true;
recommendedProxySettings = true;
virtualHosts.${vars.nixCacheHost} = {
locations."/" = {
proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
};
};
};
openssh.enable = true;
};
networking.firewall.allowedTCPPorts = [ vars.ports.nixCacheHttp ];
users.groups.${vars.remoteBuilderUser} = { };
users.users.${vars.remoteBuilderUser} = {
isSystemUser = true;
group = vars.remoteBuilderUser;
createHome = true;
home = "/var/lib/nixremote";
shell = pkgs.bashInteractive;
# Client public keys allowed to use this host as a remote builder —
# single source of truth is vars.remoteBuilderAuthorizedKeys (safe to
# commit public keys only).
openssh.authorizedKeys.keys = vars.remoteBuilderAuthorizedKeys;
};
nix.settings = {
trusted-users = [ "root" vars.remoteBuilderUser ];
experimental-features = [ "nix-command" "flakes" ];
auto-optimise-store = true;
builders-use-substitutes = true;
};
nix.gc = {
automatic = true;
dates = "weekly";
options = "--delete-older-than ${vars.nixCacheGcMaxAge}";
};
}