Lower requested resorces for sidecar containers

Author: AMecea

Changelog.md

@@ -52,6 +52,9 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
  * Update cron documentation
  * Set InnoDB buffer parameter: `innodb_buffer_pool_instances` to `min(resources.limit.cpu,
    floor(innodb_buffer_pool_size/1G))` (see #502)
+ * Change requested resources for sidecar containers: `sidecar`: (requested=10m/32Mi,
+   limit=`.spec.podSpec.rsources.limit`); `exporter`: (requested=10m/32Mi. limit=100m/128Mi);
+   `heartbeat`: (requested=10m/32Mi, limit=100m/64Mi)
 ### Removed
 ### Fixed
  * Update and fix e2e tests

pkg/controller/mysqlcluster/internal/syncer/statefullset.go

@@ -642,16 +642,25 @@ func (s *sfsSyncer) ensureResources(name string) core.ResourceRequirements {
 		core.ResourceCPU: resource.MustParse("100m"),
 	}
 	requests := core.ResourceList{
-		core.ResourceCPU: resource.MustParse("30m"),
+		core.ResourceCPU:    resource.MustParse("10m"),
+		core.ResourceMemory: resource.MustParse("32Mi"),
 	}
 
 	switch name {
 	case containerExporterName:
 		limits = core.ResourceList{
-			core.ResourceCPU: resource.MustParse("100m"),
+			core.ResourceCPU:    resource.MustParse("100m"),
+			core.ResourceMemory: resource.MustParse("128Mi"),
 		}
 	case containerMySQLInitName, containerMysqlName:
 		return s.cluster.Spec.PodSpec.Resources
+
+	case containerHeartBeatName:
+		limits[core.ResourceMemory] = resource.MustParse("64Mi")
+
+	case containerSidecarName:
+		// set same limits as mysql for sidecar container
+		limits = s.cluster.Spec.PodSpec.Resources.Limits
 	}
 
 	return core.ResourceRequirements{