rico0: enable loki

hosts/rico0/services/apps/blocky.nix

@@ -61,6 +61,7 @@ _: {
             "blocky.labs.adtya.xyz" = "10.10.10.10,fd7c:585c:c4ae::10";
             "frp.labs.adtya.xyz" = "10.10.10.10,fd7c:585c:c4ae::10";
             "grafana.labs.adtya.xyz" = "10.10.10.10,fd7c:585c:c4ae::10";
+            "loki.labs.adtya.xyz" = "10.10.10.10,fd7c:585c:c4ae::10";
             "prometheus.labs.adtya.xyz" = "10.10.10.10,fd7c:585c:c4ae::10";
             "transmission.labs.adtya.xyz" = "10.10.10.14,fd7c:585c:c4ae::14";
           };

hosts/rico0/services/apps/default.nix

@@ -3,6 +3,7 @@ _: {
     ./alertmanager.nix
     ./blocky.nix
     ./grafana.nix
+    ./loki.nix
     ./prometheus.nix
     ../../../shared/prometheus-exporters.nix
   ];

hosts/rico0/services/apps/loki.nix

@@ -0,0 +1,65 @@
+_: {
+  services = {
+    caddy = {
+      virtualHosts."loki.labs.adtya.xyz" = {
+        extraConfig = ''
+          reverse_proxy 127.0.0.1:3100
+          tls /persist/secrets/caddy/certs/default.crt /persist/secrets/caddy/certs/default.key
+        '';
+      };
+    };
+    loki = {
+      enable = true;
+      dataDir = "/mnt/data/loki";
+      configuration = {
+        auth_enabled = false;
+
+        server = {
+          http_listen_port = 3100;
+          log_level = "warn";
+        };
+
+        common = {
+          ring = {
+            instance_addr = "127.0.0.1";
+            kvstore = {
+              store = "inmemory";
+            };
+          };
+          storage = {
+            filesystem = { rules_directory = "/mnt/data/loki/rules"; };
+          };
+          replication_factor = 1;
+          path_prefix = "/mnt/data/loki";
+        };
+
+        schema_config = {
+          configs = [
+            {
+              from = "2024-07-01";
+              store = "tsdb";
+              object_store = "filesystem";
+              scheme = "v13";
+              index = { prefix = "index_"; period = "24h"; };
+            }
+          ];
+        };
+
+        storage_config = {
+          filesystem = {
+            directory = "/mnt/data/loki/chunks";
+          };
+        };
+
+        ruler = {
+          alertmanager_url = "https://alertmanager.labs.adtya.xyz";
+        };
+
+        frontend = {
+          encoding = "protobuf";
+        };
+      };
+    };
+  };
+  systemd.services.loki.unitConfig.RequiresMountsFor = [ "/mnt/data" ];
+}