Jsonnet/ruler (#2560)

* ruler jsonnet

* jsonnet fixes

production/ksonnet/loki/common.libsonnet

@@ -4,11 +4,19 @@
 
   util+:: {
     local containerPort = $.core.v1.containerPort,
+    local container = $.core.v1.container,
 
     defaultPorts::
       [
         containerPort.new(name='http-metrics', port=$._config.http_listen_port),
         containerPort.new(name='grpc', port=9095),
       ],
+
+    readinessProbe::
+      container.mixin.readinessProbe.httpGet.withPath('/ready') +
+      container.mixin.readinessProbe.httpGet.withPort($._config.http_listen_port) +
+      container.mixin.readinessProbe.withInitialDelaySeconds(15) +
+      container.mixin.readinessProbe.withTimeoutSeconds(1),
+
   },
 }

production/ksonnet/loki/config.libsonnet

@@ -41,6 +41,8 @@
     table_prefix: $._config.namespace,
     index_period_hours: 168,  // 1 week
 
+    ruler_enabled: false,
+
     // Bigtable variables
     bigtable_instance: error 'must specify bigtable instance',
     bigtable_project: error 'must specify bigtable project',
@@ -308,6 +310,29 @@
           },
         },
       },
+
+      ruler: if $._config.ruler_enabled then {
+        rule_path: '/tmp/rules',
+        enable_api: true,
+        alertmanager_url: 'http://alertmanager.%s.svc.cluster.local/alertmanager' % $._config.namespace,
+        enable_sharding: true,
+        enable_alertmanager_v2: true,
+        ring: {
+          kvstore: {
+            store: 'consul',
+            consul: {
+              host: 'consul.%s.svc.cluster.local:8500' % $._config.namespace,
+            },
+          },
+        },
+        storage+: {
+          type: 'gcs',
+          gcs+: {
+            bucket_name: '%(cluster)s-%(namespace)s-ruler' % $._config,
+          },
+        },
+      } else {},
+
     },
   },
 

production/ksonnet/loki/images.libsonnet

@@ -11,5 +11,6 @@
     querier: self.loki,
     tableManager: self.loki,
     query_frontend: self.loki,
+    ruler: self.loki,
   },
 }

production/ksonnet/loki/loki.libsonnet

@@ -12,6 +12,7 @@
 (import 'querier.libsonnet') +
 (import 'table-manager.libsonnet') +
 (import 'query-frontend.libsonnet') +
+(import 'ruler.libsonnet') +
 
 // Supporting services
 (import 'memcached.libsonnet')

production/ksonnet/loki/ruler.libsonnet

@@ -0,0 +1,37 @@
+{
+  local container = $.core.v1.container,
+
+  ruler_args:: $._config.commonArgs {
+    target: 'ruler',
+  },
+
+  ruler_container::
+    if $._config.ruler_enabled then
+      container.new('ruler', $._images.ruler) +
+      container.withPorts($.util.defaultPorts) +
+      container.withArgsMixin($.util.mapToFlags($.ruler_args)) +
+      $.util.resourcesRequests('1', '6Gi') +
+      $.util.resourcesLimits('16', '16Gi') +
+      $.util.readinessProbe +
+      $.jaeger_mixin
+    else {},
+
+  local deployment = $.apps.v1.deployment,
+
+  ruler_deployment:
+    if $._config.ruler_enabled then
+      deployment.new('ruler', 2, [$.ruler_container]) +
+      deployment.mixin.spec.template.spec.withTerminationGracePeriodSeconds(600) +
+      $.config_hash_mixin +
+      $.util.configVolumeMount('loki', '/etc/loki/config') +
+      $.util.configVolumeMount('overrides', '/etc/loki/overrides') +
+      $.util.antiAffinity
+    else {},
+
+  local service = $.core.v1.service,
+
+  ruler_service:
+    if $._config.ruler_enabled then
+      $.util.serviceFor($.ruler_deployment)
+    else {},
+}