Increased max connections for memcached chunks and index-queries too

Signed-off-by: Marco Pracucci <[email protected]>

Author: pracucci

CHANGELOG.md

@@ -41,7 +41,7 @@
 * [CHANGE] Increased `CortexIngesterReachingSeriesLimit` warning threshold from 70% to 80% and critical threshold from 85% to 90%. #404
 * [CHANGE] Rename ruler_s3_bucket_name and ruler_gcs_bucket_name to ruler_storage_bucket_name: #415
 * [CHANGE] Fine-tuned rolling update policy for distributor, querier, query-frontend, query-scheduler. #420
-* [CHANGE] Increased memcached-metadata max connections from 4k to 16k. #420
+* [CHANGE] Increased memcached metadata/chunks/index-queries max connections from 4k to 16k. #420
 * [CHANGE] Disabled step alignment in query-frontend to be compliant with PromQL. #420
 * [CHANGE] Do not limit compactor CPU and request a number of cores equal to the configured concurrency. #420
 * [ENHANCEMENT] Add overrides config to compactor. This allows setting retention configs per user. #386

cortex/memcached.libsonnet

@@ -34,6 +34,7 @@ memcached {
     $.memcached {
       name: 'memcached-index-queries',
       max_item_size: '%dm' % [$._config.memcached_index_queries_max_item_size_mb],
+      connection_limit: 16384,
     }
   else {},
 
@@ -54,7 +55,7 @@ memcached {
       // Save memory by more tightly provisioning memcached chunks.
       memory_limit_mb: 6 * 1024,
       overprovision_factor: 1.05,
-      connection_limit: 4096,
+      connection_limit: 16384,
 
       local container = $.core.v1.container,
     }