Merge pull request 'monitoring: add nixos-exporter to all hosts' (#26) from nixos-exporter into master

Reviewed-on: #26

flake.lock

@@ -42,6 +42,26 @@
         "url": "https://git.t-juice.club/torjus/labmon"
       }
     },
+    "nixos-exporter": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1770417341,
+        "narHash": "sha256-Js2EJZlpol6eSWVGyYy6SAhIISKHfURnD6S+NBaLfHU=",
+        "ref": "refs/heads/master",
+        "rev": "e381038537bbee314fb0326ac7d17ec4f651fe1e",
+        "revCount": 7,
+        "type": "git",
+        "url": "https://git.t-juice.club/torjus/nixos-exporter"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://git.t-juice.club/torjus/nixos-exporter"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1770136044,
@@ -78,6 +98,7 @@
       "inputs": {
         "alerttonotify": "alerttonotify",
         "labmon": "labmon",
+        "nixos-exporter": "nixos-exporter",
         "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "sops-nix": "sops-nix"

flake.nix

@@ -17,6 +17,10 @@
       url = "git+https://git.t-juice.club/torjus/labmon?ref=master";
       inputs.nixpkgs.follows = "nixpkgs-unstable";
     };
+    nixos-exporter = {
+      url = "git+https://git.t-juice.club/torjus/nixos-exporter";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
   };
 
   outputs =
@@ -27,6 +31,7 @@
       sops-nix,
       alerttonotify,
       labmon,
+      nixos-exporter,
       ...
     }@inputs:
     let
@@ -42,6 +47,17 @@
         alerttonotify.overlays.default
         labmon.overlays.default
       ];
+      # Common modules applied to all hosts
+      commonModules = [
+        (
+          { config, pkgs, ... }:
+          {
+            nixpkgs.overlays = commonOverlays;
+          }
+        )
+        sops-nix.nixosModules.sops
+        nixos-exporter.nixosModules.default
+      ];
       allSystems = [
         "x86_64-linux"
         "aarch64-linux"
@@ -58,15 +74,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/ns1
-            sops-nix.nixosModules.sops
           ];
         };
         ns2 = nixpkgs.lib.nixosSystem {
@@ -74,15 +83,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/ns2
-            sops-nix.nixosModules.sops
           ];
         };
         ha1 = nixpkgs.lib.nixosSystem {
@@ -90,15 +92,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/ha1
-            sops-nix.nixosModules.sops
           ];
         };
         template1 = nixpkgs.lib.nixosSystem {
@@ -106,15 +101,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/template
-            sops-nix.nixosModules.sops
           ];
         };
         template2 = nixpkgs.lib.nixosSystem {
@@ -122,15 +110,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/template2
-            sops-nix.nixosModules.sops
           ];
         };
         http-proxy = nixpkgs.lib.nixosSystem {
@@ -138,15 +119,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/http-proxy
-            sops-nix.nixosModules.sops
           ];
         };
         ca = nixpkgs.lib.nixosSystem {
@@ -154,15 +128,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/ca
-            sops-nix.nixosModules.sops
           ];
         };
         monitoring01 = nixpkgs.lib.nixosSystem {
@@ -170,15 +137,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/monitoring01
-            sops-nix.nixosModules.sops
             labmon.nixosModules.labmon
           ];
         };
@@ -187,15 +147,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/jelly01
-            sops-nix.nixosModules.sops
           ];
         };
         nix-cache01 = nixpkgs.lib.nixosSystem {
@@ -203,15 +156,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/nix-cache01
-            sops-nix.nixosModules.sops
           ];
         };
         pgdb1 = nixpkgs.lib.nixosSystem {
@@ -219,15 +165,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/pgdb1
-            sops-nix.nixosModules.sops
           ];
         };
         nats1 = nixpkgs.lib.nixosSystem {
@@ -235,15 +174,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/nats1
-            sops-nix.nixosModules.sops
           ];
         };
         testvm01 = nixpkgs.lib.nixosSystem {
@@ -251,15 +183,8 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/testvm01
-            sops-nix.nixosModules.sops
           ];
         };
         vault01 = nixpkgs.lib.nixosSystem {
@@ -267,33 +192,19 @@
           specialArgs = {
             inherit inputs self sops-nix;
           };
-          modules = [
+          modules = commonModules ++ [
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = commonOverlays;
-              }
-            )
             ./hosts/vault01
-            sops-nix.nixosModules.sops
           ];
         };
-      vaulttest01 = nixpkgs.lib.nixosSystem {
+        vaulttest01 = nixpkgs.lib.nixosSystem {
-        inherit system;
+          inherit system;
-        specialArgs = {
+          specialArgs = {
-          inherit inputs self sops-nix;
+            inherit inputs self sops-nix;
+          };
+          modules = commonModules ++ [
+            ./hosts/vaulttest01
+          ];
         };
-        modules = [
-          (
-            { config, pkgs, ... }:
-            {
-              nixpkgs.overlays = commonOverlays;
-            }
-          )
-          ./hosts/vaulttest01
-          sops-nix.nixosModules.sops
-        ];
-      };
       };
       packages = forAllSystems (
         { pkgs }:

system/monitoring/metrics.nix

@@ -18,4 +18,21 @@
       "--systemd.collector.enable-ip-accounting"
     ];
   };
+
+  services.prometheus.exporters.nixos = {
+    enable = true;
+    # Default port: 9971
+    flake = {
+      enable = true;
+      url = "git+https://git.t-juice.club/torjus/nixos-servers.git";
+    };
+  };
+
+  # Register nixos-exporter as a Prometheus scrape target
+  homelab.monitoring.scrapeTargets = [
+    {
+      job_name = "nixos-exporter";
+      port = 9971;
+    }
+  ];
 }