hosts: add nix-cache02 build host

New build host to replace nix-cache01 with:
- 8 CPU cores, 16GB RAM, 200GB disk
- Static IP 10.69.13.25

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

flake.nix

@@ -200,6 +200,15 @@
             ./hosts/monitoring02
           ];
         };
+        nix-cache02 = nixpkgs.lib.nixosSystem {
+          inherit system;
+          specialArgs = {
+            inherit inputs self;
+          };
+          modules = commonModules ++ [
+            ./hosts/nix-cache02
+          ];
+        };
       };
       packages = forAllSystems (
         { pkgs }:

hosts/nix-cache02/configuration.nix

@@ -0,0 +1,72 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [
+    ../template2/hardware-configuration.nix
+
+    ../../system
+    ../../common/vm
+  ];
+
+  # Host metadata (adjust as needed)
+  homelab.host = {
+    tier = "test";  # Start in test tier, move to prod after validation
+  };
+
+  # Enable Vault integration
+  vault.enable = true;
+
+  # Enable remote deployment via NATS
+  homelab.deploy.enable = true;
+
+  nixpkgs.config.allowUnfree = true;
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/vda";
+
+  networking.hostName = "nix-cache02";
+  networking.domain = "home.2rjus.net";
+  networking.useNetworkd = true;
+  networking.useDHCP = false;
+  services.resolved.enable = true;
+  networking.nameservers = [
+    "10.69.13.5"
+    "10.69.13.6"
+  ];
+
+  systemd.network.enable = true;
+  systemd.network.networks."ens18" = {
+    matchConfig.Name = "ens18";
+    address = [
+      "10.69.13.25/24"
+    ];
+    routes = [
+      { Gateway = "10.69.13.1"; }
+    ];
+    linkConfig.RequiredForOnline = "routable";
+  };
+  time.timeZone = "Europe/Oslo";
+
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+  nix.settings.tarball-ttl = 0;
+  environment.systemPackages = with pkgs; [
+    vim
+    wget
+    git
+  ];
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  networking.firewall.enable = false;
+
+  system.stateVersion = "25.11"; # Did you read the comment?
+}

hosts/nix-cache02/default.nix

@@ -0,0 +1,5 @@
+{ ... }: {
+  imports = [
+    ./configuration.nix
+  ];
+}

terraform/vault/hosts-generated.tf

@@ -33,6 +33,12 @@ locals {
         "secret/data/shared/homelab-deploy/*",
       ]
     }
+    "nix-cache02" = {
+      paths = [
+        "secret/data/hosts/nix-cache02/*",
+      ]
+    }
+  
   }
 
   # Placeholder secrets - user should add actual secrets manually or via tofu

terraform/vms.tf

@@ -86,6 +86,13 @@ locals {
       disk_size = "60G"
       vault_wrapped_token = "s.uXpdoGxHXpWvTsGbHkZuq1jF"
     }
+    "nix-cache02" = {
+      ip        = "10.69.13.25/24"
+      cpu_cores = 8
+      memory    = 16384
+      disk_size = "200G"
+      vault_wrapped_token = "s.C5EuHFyULACEqZgsLqMC3cJB"
+    }
   }
 
   # Compute VM configurations with defaults applied