Archived
beatzaplentyandClaude Sonnet 5
eadb1e35ce
One file (variables.nix) holding every value that was previously hardcoded and repeated across modules: LAN domain/CIDR, home/tailnet domains, cross-host references (nix-cache substituter hostname, NFS server hostname, remote-builder user), PXE/PBS IPs, timezone, and the primary username. Wired in via flake.nix's specialArgs (and home-manager's extraSpecialArgs for the two home.nix files), so any module picks it up by just adding `vars` to its function arguments — no explicit import needed. Two hosts (nix-cache, server) now derive their own networking.hostName from the same variable other hosts use to reach them, so there's exactly one place to change either identifier. Purely mechanical: every substituted value matches what was already there, confirmed by identical toplevel .drv paths for all 17 targets before and after. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
65 lines
2.1 KiB
Nix
65 lines
2.1 KiB
Nix
{ config, pkgs, vars, ... }:
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{
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# Generate the binary cache key pair on the nix-cache host:
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# sudo install -d -m 0700 /etc/nix
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# sudo nix-store --generate-binary-cache-key nix-cache-1 \
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# /etc/nix/cache-priv.pem \
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# /etc/nix/cache-pub.pem
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# sudo chmod 0600 /etc/nix/cache-priv.pem
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# sudo chmod 0644 /etc/nix/cache-pub.pem
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# cat /etc/nix/cache-pub.pem
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services.nix-serve = {
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enable = true;
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secretKeyFile = "/etc/nix/cache-priv.pem";
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};
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services.nginx = {
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enable = true;
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recommendedProxySettings = true;
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virtualHosts.${vars.nixCacheHost} = {
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locations."/" = {
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proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
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};
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};
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};
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networking.firewall.allowedTCPPorts = [ 80 ];
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users.groups.${vars.remoteBuilderUser} = { };
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users.users.${vars.remoteBuilderUser} = {
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isSystemUser = true;
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group = vars.remoteBuilderUser;
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createHome = true;
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home = "/var/lib/nixremote";
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shell = pkgs.bashInteractive;
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# Provide remote builder public keys here (safe to commit public keys only):
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# openssh.authorizedKeys.keys = [ "ssh-ed25519 AAAA... client@host" ];
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#
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# Avoid absolute keyFiles paths here because they break pure flake evaluation.
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openssh.authorizedKeys.keys = [
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFDEA1S2ikpObREgbP5uVBWMxIOGbY8B+Wx7VTZK1m6t root@server"
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPAYIT9ormlmxZ0SziyDQaUntnKI8HK9/s3Qac1ZKjP2 root@docker"
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKKKzoEPl/ZW9KBRHBcp6/ThOngGpwMv5EhkTlgC4aDf root@nixos"
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIGtOWOCS+ImHc7NehguoyD7PbonGosKMZqc9+QR3v/h root@nixos"
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHxXTQxFnArK5HXG7czeoybZebCGfxpUdusJkPn+BCSp root@server"
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];
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};
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services.openssh.enable = true;
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nix.settings = {
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trusted-users = [ "root" vars.remoteBuilderUser ];
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experimental-features = [ "nix-command" "flakes" ];
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auto-optimise-store = true;
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builders-use-substitutes = true;
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};
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nix.gc = {
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automatic = true;
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dates = "weekly";
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options = "--delete-older-than 30d";
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};
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}
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