pluh 🗣

classes/headless/fs.nix

@@ -1,13 +0,0 @@
-{
-  fileSystems = {
-    "/" = {
-      fsType = "ext4";
-      label = "main";
-      options = ["noatime"];
-    };
-    "/boot" = {
-      label = "BOOT";
-      fsType = "vfat";
-    };
-  };
-}

classes/headless/grafana.nix

@@ -0,0 +1,43 @@
+{
+  services.grafana = {
+    enable = true;
+    domain = "grafana.pele";
+    port = 9010;
+    addr = "127.0.0.1";
+
+    # WARNING: this should match nginx setup!
+    # prevents "Request origin is not authorized"
+    rootUrl = "http://192.168.1.10:8010"; # helps with nginx / ws / live
+
+    protocol = "http";
+    analytics.reporting.enable = false;
+
+    provision = {
+      enable = true;
+      datasources = [
+        {
+          name = "Prometheus";
+          type = "prometheus";
+          access = "proxy";
+          url = "http://127.0.0.1:${toString config.services.prometheus.port}";
+        }
+        {
+          name = "Loki";
+          type = "loki";
+          access = "proxy";
+          url = "http://127.0.0.1:${toString config.services.loki.configuration.server.http_listen_port}";
+        }
+      ];
+    };
+  };
+
+  services.nginx.virtualHosts.${config.services.grafana.domain} = {
+    locations."/" = {
+      proxyPass = "http://${lib.formatHostPort {
+        host = config.services.grafana.addr;
+        inherit (config.services.grafana) port;
+      }}";
+      proxyWebsockets = true;
+    };
+  };
+}

classes/headless/loki.nix

@@ -0,0 +1,79 @@
+{
+  services.loki = {
+    enable = true;
+    configuration = {
+      server.http_listen_port = 3030;
+      auth_enabled = false;
+
+      ingester = {
+        lifecycler = {
+          address = "127.0.0.1";
+          ring = {
+            kvstore = {
+              store = "inmemory";
+            };
+            replication_factor = 1;
+          };
+        };
+        chunk_idle_period = "1h";
+        max_chunk_age = "1h";
+        chunk_target_size = 999999;
+        chunk_retain_period = "30s";
+        max_transfer_retries = 0;
+      };
+
+      schema_config = {
+        configs = [
+          {
+            from = "2022-06-06";
+            store = "boltdb-shipper";
+            object_store = "filesystem";
+            schema = "v12";
+            index = {
+              prefix = "index_";
+              period = "24h";
+            };
+          }
+        ];
+      };
+
+      storage_config = {
+        boltdb_shipper = {
+          active_index_directory = "/var/lib/loki/boltdb-shipper-active";
+          cache_location = "/var/lib/loki/boltdb-shipper-cache";
+          cache_ttl = "24h";
+          shared_store = "filesystem";
+        };
+
+        filesystem = {
+          directory = "/var/lib/loki/chunks";
+        };
+      };
+
+      limits_config = {
+        reject_old_samples = true;
+        reject_old_samples_max_age = "168h";
+      };
+
+      chunk_store_config = {
+        max_look_back_period = "0s";
+      };
+
+      table_manager = {
+        retention_deletes_enabled = false;
+        retention_period = "0s";
+      };
+
+      compactor = {
+        working_directory = "/var/lib/loki";
+        shared_store = "filesystem";
+        compactor_ring = {
+          kvstore = {
+            store = "inmemory";
+          };
+        };
+      };
+    };
+    # user, group, dataDir, extraFlags, (configFile)
+  };
+}

classes/headless/prometheus.nix

@@ -0,0 +1,34 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  services.prometheus = {
+    enable = true;
+    port = 3020;
+
+    exporters = {
+      node = {
+        enable = true;
+        port = 3021;
+        enabledCollectors = ["systemd"];
+      };
+    };
+
+    scrapeConfigs = [
+      {
+        job_name = "nodes";
+        static_configs = [
+          {
+            targets = let
+              target = lib.formatHostPort {
+                host = config.services.prometheus.exporters.node.listenAddr;
+                inherit (config.services.prometheus.exporters.node) port;
+              };
+            in [target];
+          }
+        ];
+      }
+    ];
+  };
+}

classes/headless/promtail.nix

@@ -0,0 +1,42 @@
+{config, ...}: {
+  services.promtail = {
+    enable = true;
+
+    configuration = {
+      server = {
+        http_listen_port = 3031;
+        grpc_listen_port = 0;
+      };
+
+      positions = {
+        filename = "/tmp/positions.yaml";
+      };
+
+      clients = [
+        {
+          url = "http://127.0.0.1:${toString config.services.loki.configuration.server.http_listen_port}/loki/api/v1/push";
+        }
+      ];
+
+      scrape_configs = [
+        {
+          job_name = "journal";
+          journal = {
+            max_age = "12h";
+            labels = {
+              job = "systemd-journal";
+              host = "pihole";
+            };
+          };
+          relabel_configs = [
+            {
+              source_labels = ["__journal__systemd_unit"];
+              target_label = "unit";
+            }
+          ];
+        }
+      ];
+    };
+    # extraFlags
+  };
+}