alpine: many changes

- updates
- snapserver
- graphana dashboards
- loki
- ddclient
- arr suite, jellyseer
- mautrix fixes

nixos/services/loki.nix

@@ -0,0 +1,94 @@
+{config, ...}: let
+  inherit (config.services) loki;
+in {
+  services.loki = {
+    enable = true;
+    configuration = {
+      auth_enabled = false;
+      server.http_listen_port = 3100;
+      schema_config.configs = [
+        {
+          from = "2024-10-12";
+          object_store = "filesystem";
+          store = "tsdb";
+          schema = "v13";
+          index = {
+            prefix = "index_";
+            period = "24h";
+          };
+        }
+      ];
+      storage_config."filesystem".directory = "/tmp/loki/chunks";
+      common = {
+        ring = {
+          instance_addr = "127.0.0.1";
+          kvstore.store = "inmemory";
+        };
+        replication_factor = 1;
+        path_prefix = "/tmp/loki";
+      };
+      limits_config.ingestion_rate_strategy = "local";
+    };
+  };
+  services.prometheus.scrapeConfigs = [{
+    job_name = "loki";
+    static_configs = [
+      {
+        targets = ["localhost:3100"];
+      }
+    ];
+  }];
+  services.promtail = {
+    enable = true;
+    # https://grafana.com/docs/loki/latest/send-data/promtail/configuration/
+    configuration = {
+      server = {
+        http_listen_port = 9080;
+        grpc_listen_port = 0;
+      };
+      clients = [
+        {url = "http://localhost:3100/loki/api/v1/push";}
+      ];
+      scrape_configs = [
+        {
+          job_name = "system";
+          journal = {
+            path = "/var/log/journal/";
+          };
+          relabel_configs = [
+            {
+              source_labels = ["__journal_message"];
+              target_label = "message";
+              regex = "(.+)";
+            }
+            {
+              source_labels = ["__journal__systemd_unit"];
+              target_label = "systemd_unit";
+              regex = "(.+)";
+            }
+            {
+              source_labels = ["__journal__systemd_user_unit"];
+              target_label = "systemd_user_unit";
+              regex = "(.+)";
+            }
+            {
+              source_labels = ["__journal__transport"];
+              target_label = "transport";
+              regex = "(.+)";
+            }
+            {
+              source_labels = ["__journal__priority_keyword"];
+              target_label = "severity";
+              regex = "(.+)";
+            }
+          ];
+        }
+      ];
+    };
+  };
+  services.grafana.provision.datasources.settings.datasources = [{
+    name = "Loki";
+    type = "loki";
+    url = "http://localhost:${toString loki.configuration.server.http_listen_port}";
+  }];
+}