hosts/nachtigall/apps/caddy.nix

@@ -0,0 +1,57 @@
+{
+  config,
+  lib,
+  pkgs,
+  self,
+  ...
+}: let
+  maintenanceMode = {
+    logFormat = lib.mkForce ''
+      output discard
+    '';
+    extraConfig = ''
+      @notFound `{err.status_code} == 404`
+
+      @websitePages {
+        path /
+        path /about
+        path /hakken
+        path /privacy
+        path /os
+      }
+
+      error @websitePages "Scheduled Maintenance" 503
+
+      handle {
+        root * /srv/www/pub.solar
+        try_files {path}.html {path}
+        file_server
+      }
+
+      handle_errors @notFound {
+        error * "Scheduled Maintenance" 503
+      }
+
+      handle_errors {
+        root * /srv/www/pub.solar
+        rewrite * /maintenance/index.html
+        file_server
+      }
+    '';
+  };
+in {
+  systemd.tmpfiles.rules = [
+    "d '/data/srv/www/os/download/' 0750 hakkonaut hakkonaut - -"
+  ];
+
+  services.caddy = {
+    enable = lib.mkForce true;
+    group = "hakkonaut";
+    email = "admins@pub.solar";
+    enableReload = true;
+    globalConfig = lib.mkForce ''
+      grace_period 60s
+    '';
+  };
+  networking.firewall.allowedTCPPorts = [80 443];
+}

hosts/nachtigall/configuration.nix

@@ -1,5 +1,4 @@
 { config, pkgs, ... }:
-
 {
   # Use GRUB2 as the boot loader.
   # We don't use systemd-boot because Hetzner uses BIOS legacy boot.
@@ -32,18 +31,6 @@
 
   boot.initrd.availableKernelModules = [ "igb" ];
 
-  networking.hostName = "nachtigall";
-  networking.domain = "pub.solar";
-  networking.hostId = "00000001";
-
-  # enable flakes by default
-  nix = {
-    package = pkgs.nixFlakes;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
-  };
-
   # Set your time zone.
   time.timeZone = "Etc/UTC";
 
@@ -52,33 +39,20 @@
     systemPackages = with pkgs; [ vim ];
   };
 
-  # Network (Hetzner uses static IP assignments, and we don't use DHCP here)
-  networking.useDHCP = false;
-  networking.interfaces."enp35s0".ipv4.addresses = [
-    {
-      address = "138.201.80.102";
-      prefixLength = 26;
-    }
-  ];
-  networking.interfaces."enp35s0".ipv6.addresses = [
-    {
-      address = "2a01:4f8:172:1c25::1";
-      prefixLength = 64;
-    }
-  ];
-  networking.defaultGateway = "138.201.80.65";
-  networking.defaultGateway6 = { address = "fe80::1"; interface = "enp35s0"; };
-
-  services.resolved = {
-    enable = true;
-    extraConfig = ''
-      DNS=9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net 193.110.81.0#dns0.eu 185.253.5.0#dns0.eu 2a0f:fc80::#dns0.eu 2a0f:fc81::#dns0.eu
-      FallbackDNS=5.1.66.255#dot.ffmuc.net 185.150.99.255#dot.ffmuc.net 2001:678:e68:f000::#dot.ffmuc.net 2001:678:ed0:f000::#dot.ffmuc.net
-      Domains=~.
-      DNSOverTLS=yes
-    '';
+  users.users.hakkonaut = {
+    description = "CI and automation user";
+    home = "/var/nix/iso-cache";
+    useDefaultShell = true;
+    uid = 998;
+    group = "hakkonaut";
+    isSystemUser = true;
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGP5MvCwNRtCcP1pSDrn0XZTNlpOqYnjHDm9/OI4hECW hakkonaut@flora-6"
+    ];
   };
 
+  users.groups.hakkonaut = {};
+
   users.users.root.initialHashedPassword = "$y$j9T$bIN6GjQkmPMllOcQsq52K0$q0Z5B5.KW/uxXK9fItB8H6HO79RYAcI/ZZdB0Djke32";
 
   # This value determines the NixOS release with which your system is to be

hosts/nachtigall/default.nix

@@ -5,5 +5,9 @@
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
       ./configuration.nix
+
+      ./networking.nix
+      ./nix.nix
+      ./apps/caddy.nix
     ];
 }

hosts/nachtigall/networking.nix

@@ -0,0 +1,34 @@
+{ config, pkgs, ... }:
+{
+
+  networking.hostName = "nachtigall";
+  networking.domain = "pub.solar";
+  networking.hostId = "00000001";
+
+  # Network (Hetzner uses static IP assignments, and we don't use DHCP here)
+  networking.useDHCP = false;
+  networking.interfaces."enp35s0".ipv4.addresses = [
+    {
+      address = "138.201.80.102";
+      prefixLength = 26;
+    }
+  ];
+  networking.interfaces."enp35s0".ipv6.addresses = [
+    {
+      address = "2a01:4f8:172:1c25::1";
+      prefixLength = 64;
+    }
+  ];
+  networking.defaultGateway = "138.201.80.65";
+  networking.defaultGateway6 = { address = "fe80::1"; interface = "enp35s0"; };
+
+  services.resolved = {
+    enable = true;
+    extraConfig = ''
+      DNS=193.110.81.0#dns0.eu 185.253.5.0#dns0.eu 2a0f:fc80::#dns0.eu 2a0f:fc81::#dns0.eu 9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
+      FallbackDNS=5.1.66.255#dot.ffmuc.net 185.150.99.255#dot.ffmuc.net 2001:678:e68:f000::#dot.ffmuc.net 2001:678:ed0:f000::#dot.ffmuc.net
+      Domains=~.
+      DNSOverTLS=yes
+    '';
+  };
+}

hosts/nachtigall/nix.nix

@@ -0,0 +1,43 @@
+{
+  config,
+  pkgs,
+  lib,
+  flake,
+  ...
+}: {
+  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+  ];
+
+  nix = {
+    # Use default version alias for nix package
+    package = pkgs.nix;
+    gc.automatic = true;
+    optimise.automatic = true;
+
+    settings = {
+      # Improve nix store disk usage
+      auto-optimise-store = true;
+      # Prevents impurities in builds
+      sandbox = true;
+      # Give root and @wheel special privileges with nix
+      trusted-users = ["root" "@wheel"];
+      # Allow only group wheel to connect to the nix daemon
+      allowed-users = ["@wheel"];
+    };
+
+    # Generally useful nix option defaults
+    extraOptions = lib.mkForce ''
+      experimental-features = flakes nix-command
+      min-free = 536870912
+      keep-outputs = true
+      keep-derivations = true
+      fallback = true
+    '';
+
+    nixPath = [
+      "nixpkgs=${flake.inputs.nixpkgs}"
+      "nixos-config=${../../lib/compat/nixos}"
+      "home-manager=${flake.inputs.home-manager}"
+    ];
+  };
+}