Reduce ingester gRPC max concurrent streams to 10,000

CHANGELOG.md

@@ -21,6 +21,7 @@
 * [CHANGE] Removed `CortexCacheRequestErrors` alert. This alert was not working because the legacy Cortex cache client instrumentation doesn't track errors. #346
 * [CHANGE] Removed `CortexQuerierCapacityFull` alert. #342
 * [CHANGE] Changes blocks storage alerts to group metrics by the configured `cluster_labels` (supporting the deprecated `alert_aggregation_labels`). #351
+* [CHANGE] Reduce gRPC max concurrent streams to 10,000. #355
 * [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
 * [ENHANCEMENT] Added documentation text panels and descriptions to reads and writes dashboards. #324
 * [ENHANCEMENT] Dashboards: defined container functions for common resources panels: containerDiskWritesPanel, containerDiskReadsPanel, containerDiskSpaceUtilization. #331

cortex/ingester.libsonnet

@@ -31,7 +31,7 @@
       'ingester.max-series-per-query': $._config.limits.max_series_per_query,
       'ingester.max-samples-per-query': $._config.limits.max_samples_per_query,
       'runtime-config.file': '/etc/cortex/overrides.yaml',
-      'server.grpc-max-concurrent-streams': 100000,
+      'server.grpc-max-concurrent-streams': 10000,
       'server.grpc-max-send-msg-size-bytes': 10 * 1024 * 1024,
       'server.grpc-max-recv-msg-size-bytes': 10 * 1024 * 1024,
     } + (