hosts/matrix/default.nix

@@ -5,7 +5,6 @@
     ../common.nix
     ../../services/openssh.nix
     ../../services/nginx.nix
-    ../../services/prometheus-node.nix
     ./nginx.nix
     ./synapse.nix
     ./draupnir.nix

hosts/md/default.nix

@@ -4,7 +4,6 @@
   imports = [
     ../common.nix
     ../../services/openssh.nix
-    ../../services/prometheus-node.nix
     ./hedgedoc.nix
     ../../services/nginx.nix
     ./nginx.nix

hosts/monitoring/default.nix

@@ -4,9 +4,8 @@
   imports = [
     ../common.nix
     ../../services/openssh.nix
-    ../../services/prometheus-node.nix
     ../../services/nginx.nix
-    ./nginx.nix
+    #./nginx.nix
     #./prometheus.nix
     #./grafana.nix
   ];

hosts/monitoring/nginx.nix

@@ -7,7 +7,7 @@
     kTLS = true;
     forceSSL = true;
     enableACME = true;
-    basicAuthFile = config.age.secrets.grafana_basic_auth.path;
+    #basicAuthFile = config.age.secrets.grafana_basic_auth.path;
     locations = {
       "/" = {
         #proxyPass = "http://";

hosts/powerdns/default.nix

@@ -0,0 +1,35 @@
+{ ... }:
+
+{
+  imports = [
+    ../common.nix
+    ../../services/openssh.nix
+    ../../services/powerdns.nix
+  ];
+
+  networking = {
+    hostName = "powerdns";
+    firewall = {
+      allowedTCPPorts = [
+        53 # DNS
+      ];
+      allowedUDPPorts = [
+        53 # DNS
+      ];
+    };
+  };
+
+  services = {
+    openssh.banner = ''
+                                       __                             __
+                                      /\ \__                         /\ \
+        ___     ____      ___     ____\ \ ,_\       ___    ___    ___\ \ \____
+      /' _ `\  /',__\    / __`\  /',__\\ \ \/      /'___\ /'___\ /'___\ \ '__`\
+      /\ \/\ \/\__, `\__/\ \L\ \/\__, `\\ \ \_  __/\ \__//\ \__//\ \__/\ \ \L\ \
+      \ \_\ \_\/\____/\_\ \____/\/\____/ \ \__\/\_\ \____\ \____\ \____\\ \_,__/
+       \/_/\/_/\/___/\/_/\/___/  \/___/   \/__/\/_/\/____/\/____/\/____/ \/___/
+    '';
+  };
+
+  system.stateVersion = "25.11";
+}

hosts/sql/default.nix

@@ -4,7 +4,6 @@
   imports = [
     ../common.nix
     ../../services/openssh.nix
-    ../../services/prometheus-node.nix
     ./postgres.nix
   ];
 

hosts/www/default.nix

@@ -5,7 +5,6 @@
     ../common.nix
     ../../services/openssh.nix
     ./openssh.nix
-    ../../services/prometheus-node.nix
     ../../services/nginx.nix
     ./nginx.nix
   ];

secrets/secrets.nix

@@ -35,7 +35,6 @@ in
 
   "grafana_admin_password.age".publicKeys = users ++ [ _monitoring ];
   "grafana_secret_key.age".publicKeys = users ++ [ _monitoring ];
-  "grafana_basic_auth.age".publicKeys = users ++ [ _monitoring ];
 
   "postgres-matrix-synapse.age".publicKeys = users ++ [ _sql _matrix ];
   "postgres-hedgedoc.age".publicKeys = users ++ [ _sql _md ];

services/powerdns.nix

@@ -0,0 +1,72 @@
+{ config, ... }:
+
+{
+  # exposes prometheus metrics at http://127.0.0.1:8081/metrics
+  services = {
+    powerdns = {
+      enable = true;
+      secretFile = config.age.secrets.powerdns.path;
+      # API_KEY=supersecret123!
+      # WEBSERVER_PASSWORD=supersecre123!
+      extraConfig = ''
+        api=yes
+        api-key=$API_KEY
+        local-address=0.0.0.0, ::
+        local-port=53
+        log-timestamp=no  # journald already does this
+        resolver=127.0.0.54:5300  # Used for ALIAS lookup
+        secondary=yes
+        version-string=anonymous
+        webserver-password=$WEBSERVER_PASSWORD
+        webserver-port=8081
+
+        launch=bind
+      '';
+    };
+    powerdns-admin = {
+      enable = true;
+      secretKeyFile = config.age.secrets.powerdns-admin-cookie-secret.path;
+      saltFile = config.age.secrets.powerdns-admin-salt.path;
+      extraArgs = [];
+      config = ''
+        # PDA
+        SIGNUP_ENABLED = True
+        LOCAL_DB_ENABLED = True
+
+        # Flask
+        BIND_ADDRESS = '127.0.0.1'
+        PORT = 8000
+        #SESSION_COOKIE_SECURE = True
+
+        # Flask-Session
+        import cachelib
+        SESSION_TYPE = 'cachelib'
+        SESSION_CACHELIB = cachelib.simple.SimpleCache()
+
+        # Flask-SQLAlchemy
+        SQLALCHEMY_DATABASE_URI = 'postgresql://powerdnsadmin@/powerdnsadmin?host=/run/postgresql'
+        SQLALCHEMY_TRACK_MODIFICATIONS = True
+
+        # FLask-SeaSurf
+        #CSRF_COOKIE_SECURE = True
+      '';
+    };
+    postgresql = {
+      enable = true;
+      package = pkgs.postgresql_18;
+      ensureUsers = [
+        {
+          name = "pda";
+          ensureDBOwnership = true;
+        }
+      ];
+      ensureDatabases = [ "pda" ];
+    };
+    postgresqlBackup = {
+      enable = true;
+      compression = "zstd";
+      startAt = "@midnight";
+    };
+  };
+}
+

services/prometheus-node.nix

@@ -1,15 +0,0 @@
-{ ... }:
-
-{
-  services.prometheus.exporters.node = {
-    enable = true;
-    #listenAddress = "0.0.0.0";
-    firewallRules = ''
-      ip saddr 195.160.173.14/32 tcp dport ${config.services.prometheus.exporters.node.port} accept comment "Allow prometheus on monitoring.berlin.ccc.der"
-      ip6 saddr 2001:678:760:cccb::14/128 tcp dport ${config.services.prometheus.exporters.node.port} accept comment "Allow prometheus on monitoring.berlin.ccc.der"
-    '';
-    enabledCollectors = [];
-    disabledCollectors = [];
-  };
-}
-