Server/grafana: provision prometheus datasource

roles/server/grafana.nix

@@ -23,7 +23,16 @@ in {
   services = {
     grafana = {
       enable = true;
+
+      provision = {
+        enable = true;
+        datasources.settings = {
+          apiVersion = 1;
+        };
+      };
+
       settings = {
+        analytics.reporting_enabled = false;
         security = {
           admin_user = "$__file{${config.age.secrets.grafanaAdminName.path}}";
           admin_password = "$__file{${config.age.secrets.grafanaAdminPassword.path}}";

roles/server/prometheus.nix

@@ -1,4 +1,4 @@
-{...}: {
+{config, ...}: {
   services.prometheus = {
     enable = true;
     enableReload = true;
@@ -21,4 +21,11 @@
       }
     ];
   };
+  services.grafana.provision = {
+    datasources.settings.datasources = [{
+      name = "Prometheus";
+      type = "prometheus";
+      url = "http://127.0.0.1:${builtins.toString config.services.prometheus.port}";
+    }];
+  };
 }