Added Loki Data collector

nixos/roles/monitoring.nix

@@ -39,6 +39,7 @@ in
       };
     };
 
+    # TODO: Computers should register themselves
     prometheus = {
       enable = true;
       port = 9001;
@@ -61,10 +62,55 @@ in
         }
       ];
     };
+
+    loki = {
+      enable = true;
+      configuration = {
+        auth_enabled = false;
+        server.http_listen_port = 3100;
+        ingester = {
+          lifecycler = {
+            address = "127.0.0.1";
+            ring = {
+              kvstore.store = "inmemory";
+              replication_factor = 1;
+            };
+          };
+          chunk_idle_period = "5m";
+          chunk_retain_period = "30s";
+        };
+        schema_config.configs = [
+          {
+            from = "2024-01-01";
+            store = "tsdb";
+            object_store = "filesystem";
+            schema = "v13";
+            index = {
+              prefix = "index_";
+              period = "24h";
+            };
+          }
+        ];
+        storage_config = {
+          tsdb_shipper = {
+            active_index_directory = "/var/lib/loki/tsdb-index";
+            cache_location = "/var/lib/loki/tsdb-cache";
+          };
+          filesystem.directory = "/var/lib/loki/chunks";
+        };
+        limits_config = {
+          reject_old_samples = true;
+          reject_old_samples_max_age = "168h";
+        };
+      };
+    };
   };
 
   networking.firewall.allowedTCPPorts = [
     80
+    443
+    # TODO: Remove
     9001
+    3100
   ];
 }