Increase default store-gateway memory request and limit

CHANGELOG.md

@@ -5,6 +5,8 @@
 * [CHANGE] `namespace` template variable in dashboards now only selects namespaces for selected clusters. #311
 * [CHANGE] Alertmanager: mounted overrides configmap to alertmanager too. #315
 * [CHANGE] Memcached: upgraded memcached from `1.5.17` to `1.6.9`. #316
+* [CHANGE] Store-gateway: increased memory request and limit respectively from 6GB / 6GB to 12GB / 18GB. #322
+* [CHANGE] Store-gateway: increased `-blocks-storage.bucket-store.max-chunk-pool-bytes` from 2GB (default) to 12GB. #322
 * [ENHANCEMENT] cortex-mixin: Make `cluster_namespace_deployment:kube_pod_container_resource_requests_{cpu_cores,memory_bytes}:sum` backwards compatible with `kube-state-metrics` v2.0.0. #317
 * [BUGFIX] Fixed `CortexIngesterHasNotShippedBlocks` alert false positive in case an ingester instance had ingested samples in the past, then no traffic was received for a long period and then it started receiving samples again. #308
 

cortex/tsdb.libsonnet

@@ -216,6 +216,8 @@
       // Block index-headers are pre-downloaded but lazy mmaped and loaded at query time.
       'blocks-storage.bucket-store.index-header-lazy-loading-enabled': 'true',
       'blocks-storage.bucket-store.index-header-lazy-loading-idle-timeout': '60m',
+
+      'blocks-storage.bucket-store.max-chunk-pool-bytes': 12 * 1024 * 1024 * 1024,
     } +
     $.blocks_chunks_caching_config +
     $.blocks_metadata_caching_config +
@@ -228,8 +230,8 @@
     container.withPorts($.store_gateway_ports) +
     container.withArgsMixin($.util.mapToFlags($.store_gateway_args)) +
     container.withVolumeMountsMixin([volumeMount.new('store-gateway-data', '/data')]) +
-    $.util.resourcesRequests('1', '6Gi') +
-    $.util.resourcesLimits(null, '6Gi') +
+    $.util.resourcesRequests('1', '12Gi') +
+    $.util.resourcesLimits(null, '18Gi') +
     $.util.readinessProbe +
     $.jaeger_mixin,