faf: add initial loki config

configs/loki.yaml

@@ -0,0 +1,33 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 0
+
+common:
+  path_prefix: /tmp/loki
+  storage:
+    filesystem:
+      chunks_directory: /tmp/loki/chunks
+      rules_directory: /tmp/loki/rules
+  replication_factor: 1
+  ring:
+    instance_addr: 127.0.0.1
+    kvstore:
+      store: inmemory
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: boltdb-shipper
+      object_store: filesystem
+      schema: v11
+      index:
+        prefix: index_
+        period: 24h
+
+ruler:
+  alertmanager_url: http://127.0.0.1:9093
+
+analytics:
+  reporting_enabled: false

hosts/faf/default.nix

@@ -31,6 +31,10 @@ in {
   users.users.qbit = userBase;
 
   services = {
+    loki = {
+      enable = true;
+      configFile = ../../configs/loki.yaml;
+    };
     prometheus = {
       enable = true;
       port = 9001;