Healthcheck for `Loki`.

cookbooks/loki/files/etc/consul.d/service-loki.json

@@ -1,6 +0,0 @@
-{
-  "service": {
-    "name": "loki",
-    "port": 3100
-  }
-}

cookbooks/loki/setup.rb

@@ -8,10 +8,14 @@
 end
 
 # Deploy `prometheus` files:
-remote_file '/etc/loki/loki-config.yml' do
+template '/etc/loki/loki-config.yml' do
   owner  'root'
   group  'root'
   mode   '644'
+
+  variables(ipaddr: node['consul']['ipaddr'])
+
+  notifies :restart, 'service[loki]'
 end
 
 # Deploy `systemd` configuration for `prometheus`:
@@ -27,11 +31,13 @@ service 'loki' do
 end
 
 # Depoy `consul` service configuration for `loki`:
-remote_file '/etc/consul.d/service-loki.json' do
+template '/etc/consul.d/service-loki.json' do
   owner  'root'
   group  'root'
   mode   '644'
 
+  variables(ipaddr: node['consul']['ipaddr'])
+
   notifies :restart, 'service[supervisor]'
 end
 

cookbooks/loki/templates/etc/consul.d/service-loki.json.erb

@@ -0,0 +1,12 @@
+{
+  "service": {
+    "name": "loki",
+    "port": 3100,
+    "check":{
+      "tcp": "<%= @ipaddr %>:3100",
+      "interval": "60s",
+      "timeout": "1s",
+      "success_before_passing": 3
+    }
+  }
+}

cookbooks/loki/templates/etc/loki/loki-config.yml

@@ -0,0 +1,45 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+
+ingester:
+  lifecycler:
+    address: 127.0.0.1
+    ring:
+      kvstore:
+        store: inmemory
+      replication_factor: 1
+    final_sleep: 0s
+  chunk_idle_period: 5m
+  chunk_retain_period: 30s
+  max_transfer_retries: 0
+
+schema_config:
+  configs:
+    - from: 2018-04-15
+      store: boltdb
+      object_store: filesystem
+      schema: v11
+      index:
+        prefix: index_
+        period: 168h
+
+storage_config:
+  boltdb:
+    directory: /var/opt/loki/index
+
+  filesystem:
+    directory: /var/opt/loki/chunks
+
+limits_config:
+  enforce_metric_name: false
+  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