Setup mail server and restructure some things

config/hosts/metrics/grafana.nix

@@ -0,0 +1,36 @@
+{ config, ... }:
+{
+  services.grafana = {
+    enable = true;
+    settings = {
+      server = {
+        domain = "grafana.grzb.de";
+        root_url = "https://${config.services.grafana.settings.server.domain}";
+      };
+      security = {
+        cookie_secure = true;
+        cookie_samesite = "strict";
+        admin_user = "yuri";
+        admin_password = "$__file{/secrets/metrics-grafana-admin-password.secret}";
+        admin_email = "yuri@nekover.se";
+      };
+      smtp = {
+        enabled = true;
+        host = "mail.grzb.de:465";
+        user = "grafana";
+        password = "$__file{/secrets/metrics-grafana-smtp-password.secret}";
+        from_address = "grafana@robot.grzb.de";
+        from_name = "Grafana";
+        startTLS_policy = "NoStartTLS";
+      };
+    };
+    provision.datasources.settings.datasources = [
+      {
+        name = "Prometheus";
+        type = "prometheus";
+        url = "http://localhost:${builtins.toString config.services.prometheus.port}";
+        isDefault = true;
+      }
+    ];
+  };
+}