garage: add monitoring, connect to grafana + loki

https://garagehq.deuxfleurs.fr/documentation/reference-manual/monitoring/

hosts/default.nix

@@ -96,8 +96,8 @@
           self.nixosModules.overlays
           self.nixosModules.unlock-luks-on-boot
           self.nixosModules.core
-          #self.nixosModules.prometheus-exporters
-          #self.nixosModules.promtail
+          self.nixosModules.prometheus-exporters
+          self.nixosModules.promtail
 
           self.nixosModules.garage
           self.nixosModules.nginx

modules/garage/default.nix

@@ -27,6 +27,10 @@
     3902
   ];
 
+  networking.firewall.interfaces.wg-ssh.allowedTCPPorts = [
+    3903
+  ];
+
   security.acme = {
     defaults = {
       environmentFile = config.age.secrets.acme-namecheap-env.path;
@@ -103,6 +107,9 @@
         root_domain = ".web.${config.pub-solar-os.networking.domain}";
         index = "index.html";
       };
+      admin = {
+        api_bind_addr = "[::]:3903";
+      };
     };
   };
 

modules/grafana/default.nix

@@ -33,6 +33,11 @@
       group = "grafana";
       user = "grafana";
     };
+    "grafana-dashboards/grafana-garage-dashboard-prometheus.json" = {
+      source = ./grafana-dashboards/grafana-garage-dashboard-prometheus.json;
+      group = "grafana";
+      user = "grafana";
+    };
   };
 
   services.caddy.virtualHosts."grafana.${config.pub-solar-os.networking.domain}" = {

modules/prometheus/default.nix

@@ -69,6 +69,14 @@
               instance = "tankstelle";
             };
           }
+          {
+            targets = [
+              "trinkgenossin.wg.${config.pub-solar-os.networking.domain}:${toString config.services.prometheus.exporters.node.port}"
+            ];
+            labels = {
+              instance = "trinkgenossin";
+            };
+          }
         ];
       }
       {
@@ -83,6 +91,18 @@
           }
         ];
       }
+      {
+        job_name = "garage";
+        static_configs = [
+          {
+            targets = [
+              "trinkgenossin.wg.${config.pub-solar-os.networking.domain}:3903"
+              "delite.wg.${config.pub-solar-os.networking.domain}:3903"
+              "blue-shell.wg.${config.pub-solar-os.networking.domain}:3903"
+            ];
+          }
+        ];
+      }
     ];
 
     ruleFiles = [