grafana: split up configuration + postgres

- Move `services/grafana.nix` to `services/grafana/default.nix`
- Split up all data collectors into separate files under
  `services/grafana`
- Make grafana use postgres as its database

hosts/tsuki/configuration.nix

@@ -7,7 +7,7 @@
     # ./services/dokuwiki.nix
     ./services/gitea
     # ./services/gitlab
-    ./services/grafana.nix
+    ./services/grafana
     ./services/hydra.nix
     # ./services/jitsi.nix
     ./services/jupyter.nix

hosts/tsuki/services/grafana.nix

@@ -1,76 +0,0 @@
-{ config, lib, secrets, ... }:
-{
-  services.grafana = {
-    enable = true;
-    domain = "log.nani.wtf";
-    port = secrets.ports.grafana;
-    addr = "0.0.0.0";
-  };
-
-  # services.influxdb = {
-  #   enable = true;
-  #   dataDir = "/data/var/influxdb";
-  #   extraConfig = {
-  #     udp = {
-  #       enabled = true;
-  #       bind-address = "0.0.0.0:8089";
-  #       database = "proxmox";
-  #       batch-size = 1000;
-  #       batch-timeout = "1s";
-  #     };
-  #   };
-  # };
-
-  services.prometheus = {
-    enable = true;
-    port = secrets.ports.prometheus;
-
-    scrapeConfigs = [
-      {
-        job_name = "synapse";
-        scrape_interval = "15s";
-        metrics_path = "/_synapse/metrics";
-        static_configs = [
-          {
-            targets = [ "localhost:${toString secrets.ports.matrix.listener}" ];
-          }
-        ];
-      }
-      {
-        job_name = "minecraft";
-        # scrape_interval = "15s";
-        # metrics_path = "/_synapse/metrics";
-        static_configs = [
-          {
-            targets = [ "${secrets.ips.crafty}:${toString secrets.ports.prometheus-crafty}" ];
-            labels = {
-              server_name = "my-minecraft-server";
-            };
-          }
-        ];
-      }
-    ];
-
-    exporters = {
-      jitsi.enable = true;
-      nginx.enable = true;
-      nginxlog.enable = true;
-      systemd.enable = true;
-      # postgres.enable = true;
-    };
-
-    # globalConfig = {
-
-    # };
-
-  };
-
-  # services.loki = {
-  #   enable = true;
-    # configFile = ./loki-local-config.yaml;
-    # config = {
-
-    # };
-  # };
-
-}

hosts/tsuki/services/grafana/default.nix

@@ -0,0 +1,22 @@
+{ config, lib, secrets, ... }:
+{
+  imports = [
+    ./prometheus.nix
+    ./influxdb.nix
+    ./loki.nix
+  ];
+
+  services.grafana = {
+    enable = true;
+    domain = "log.nani.wtf";
+    port = secrets.ports.grafana;
+    addr = "0.0.0.0";
+    dataDir = "${config.machineVars.dataDrives.default}/var/grafana";
+
+    database = {
+      type = "postgres";
+      user = "grafana";
+      host = "localhost:${toString secrets.ports.postgres}";
+    };
+  };
+}

hosts/tsuki/services/grafana/influxdb.nix

@@ -0,0 +1,16 @@
+{ config, secrets, ... }:
+{
+  # services.influxdb = {
+  #   enable = true;
+  #   dataDir = "${config.machineVars.dataDrives.default}/var/influxdb";
+  #   extraConfig = {
+  #     udp = {
+  #       enabled = true;
+  #       bind-address = "0.0.0.0:8089";
+  #       database = "proxmox";
+  #       batch-size = 1000;
+  #       batch-timeout = "1s";
+  #     };
+  #   };
+  # };
+}

hosts/tsuki/services/grafana/loki.nix

@@ -0,0 +1,10 @@
+{ ... }:
+{
+  # services.loki = {
+  #   enable = true;
+    # configFile = ./loki-local-config.yaml;
+    # config = {
+
+    # };
+  # };
+}

hosts/tsuki/services/grafana/prometheus.nix

@@ -0,0 +1,52 @@
+{ secrets, ... }: {
+  services.prometheus = {
+    enable = true;
+    port = secrets.ports.prometheus;
+
+    scrapeConfigs = [
+      {
+        job_name = "synapse";
+        scrape_interval = "15s";
+        metrics_path = "/_synapse/metrics";
+        static_configs = [
+          {
+            targets = [ "localhost:${toString secrets.ports.matrix.listener}" ];
+          }
+        ];
+      }
+      # {
+      #   job_name = "minecraft";
+      #   # scrape_interval = "15s";
+      #   # metrics_path = "/_synapse/metrics";
+      #   static_configs = [
+      #     {
+      #       targets = [ "${secrets.ips.crafty}:${toString secrets.ports.prometheus-crafty}" ];
+      #       labels = {
+      #         server_name = "my-minecraft-server";
+      #       };
+      #     }
+      #   ];
+      # }
+    ];
+
+    exporters = {
+      # jitsi.enable = true;
+      nginx.enable = true;
+      nginxlog.enable = true;
+      systemd.enable = true;
+      # openldap
+      # openvpn
+      # nextcloud
+      # influxdb
+      # wireguard
+      # postgres = {
+      #   enable = true;
+      # };
+    };
+
+    # globalConfig = {
+
+    # };
+
+  };
+}