smartctl_exporter: Fix guard

machines/ci-runner/README.md

@@ -0,0 +1,15 @@
+<!--
+SPDX-FileCopyrightText: 2024 Simon Bruder <simon@sbruder.de>
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+# ci-runner
+
+## Hardware
+
+QEMU/KVM virtual machine on [koyomi](../koyomi/README.md).
+
+## Purpose
+
+It will serve as a CI runner for Forgejo.

machines/ci-runner/configuration.nix

@@ -0,0 +1,31 @@
+# SPDX-FileCopyrightText: 2024 Simon Bruder <simon@sbruder.de>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+{ pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ../../modules
+  ];
+
+  sbruder = {
+    full = false;
+    #wireguard.home.enable = true;
+  };
+
+  networking.hostName = "ci-runner";
+
+  system.stateVersion = "24.05";
+
+  #services.gitea-actions-runner = {
+  #  package = pkgs.forgejo-runner;
+  #  instances = {
+  #    personal = {
+  #      enable = true;
+  #      url = "https://git.sbruder.de";
+  #    };
+  #  };
+  #};
+}

machines/ci-runner/hardware-configuration.nix

@@ -0,0 +1,56 @@
+# SPDX-FileCopyrightText: 2024 Simon Bruder <simon@sbruder.de>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+{ modulesPath, ... }:
+
+{
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  sbruder.machine.isVm = true;
+
+  boot = {
+    kernelModules = [ "kvm-intel" ];
+    extraModulePackages = [ ];
+    kernelParams = [ ];
+    initrd = {
+      availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "virtio_scsi" "sr_mod" "virtio_blk" ];
+      kernelModules = [ ];
+    };
+    loader = {
+      grub.enable = false;
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+    };
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/e1a9b0bb-9f04-498c-ac2f-aad9da4639f3";
+      fsType = "btrfs";
+      options = [ "compress=zstd" "discard" "noatime" "ssd" ]; # for some reason, the kernel assumes rotational
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/7A51-7897";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+  };
+
+  networking = {
+    useDHCP = false;
+    usePredictableInterfaceNames = false;
+  };
+  systemd.network = {
+    enable = true;
+    networks = {
+      eth0 = {
+        name = "eth0";
+        DHCP = "yes";
+        domains = [ "sbruder.de" ];
+      };
+    };
+  };
+}

machines/default.nix

@@ -85,4 +85,9 @@ in
 
     targetHost = "koyomi.sbruder.de";
   };
+  ci-runner = {
+    system = "x86_64-linux";
+
+    targetHost = "ci-runner.sbruder.de";
+  };
 }

modules/prometheus/smartctl_exporter.nix

@@ -4,9 +4,9 @@
 
 { config, lib, ... }:
 
-{
+lib.mkIf (config.sbruder.wireguard.home.enable && !config.sbruder.machine.isVm) {
   services.prometheus.exporters.smartctl = {
-    enable = config.sbruder.wireguard.home.enable && !config.sbruder.machine.isVm;
+    enable = true;
     listenAddress = config.sbruder.wireguard.home.address;
     # devices need to be specified for all systems that use NVMe
     # https://github.com/NixOS/nixpkgs/issues/210041