add radish configuration

freun.dev/grafana.nix

@@ -0,0 +1,60 @@
+{ ... }:
+let
+  fqdn = "graph.freun.dev";
+  port = 3300;
+in
+{
+  services.grafana = {
+    enable = true;
+
+    settings = {
+      server = {
+      	root_url = "https://${fqdn}";
+        http_port = port;
+      };
+
+      database = {
+        host = "/var/run/postgresql";
+        type = "postgres";
+        user = "grafana";
+      };
+
+      smtp = {
+        enabled = true;
+        host = "horologium.uberspace.de";
+        from_address = "noreply@freun.dev";
+        from_name = "Vaultwarden";
+        user = "noreply@freun.dev";
+        password = "$__file{/var/secrets/smtp-password}";
+      };
+    };
+  };
+
+  services.prometheus = {
+    enable = true;
+    exporters.node.enable = true;
+    scrapeConfigs = [
+      {
+        job_name = "node";
+        static_configs = [
+          { targets = [ "localhost:9100" ]; }
+        ];
+      }
+    ];
+  };
+
+  services.caddy.virtualHosts = {
+    "${fqdn}".extraConfig = ''
+      reverse_proxy localhost:${builtins.toString port}
+    '';
+  };
+
+  services.postgresql = {
+    ensureDatabases = [ "grafana" ];
+    ensureUsers = [{
+      name = "grafana";
+      ensureDBOwnership = true;
+    }];
+  };
+}
+