Allow user to specify metrics exporter and sidecar resources

Author: AMecea

Changelog.md

@@ -33,6 +33,8 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
  * Add `Volumes` and `VolumesMounts` in `.Spec.PodSpec` to allow the user specifying custom volume
    mounts.
  * Add `InitContainers` and `Containers` in `.Spec.PodSpec` to allow the user specifying custom containers.
+ * Add `MetricsExporterResources` and `MySQLOperatorSidecarResrouces` in `.Spec.PodSpec` to allow
+   the user specifying resources for thos sidecars containers.
 ### Changed
  * [#422](https://github.com/presslabs/mysql-operator/pull/422) adds the `SidecarServerPort` to the
    `MasterService` and introduces one new service, HealthyReplicasService, so that we can try to

config/crds/mysql_v1alpha1_mysqlcluster.yaml

@@ -141,6 +141,14 @@ spec:
                   type: array
                 labels:
                   type: object
+                metricsExporterResources:
+                  description: MetricsExporterResources allows you to specify resources
+                    for metrics exporter container
+                  type: object
+                mysqlOperatorSidecarResources:
+                  description: MySQLOperatorSidecarResources allows you to specify
+                    resources for sidecar container used to take backups with xtrabackup
+                  type: object
                 nodeSelector:
                   type: object
                 priorityClassName:

pkg/apis/mysql/v1alpha1/mysqlcluster_defaults.go

@@ -68,6 +68,20 @@ func (c *MysqlCluster) setPodSpecDefaults(spec *PodSpec) {
 			},
 		}
 	}
+
+	if len(spec.MetricsExporterResources.Requests) == 0 {
+		spec.MetricsExporterResources.Requests = corev1.ResourceList{
+			corev1.ResourceCPU:    resource.MustParse("10m"),
+			corev1.ResourceMemory: resource.MustParse("32Mi"),
+		}
+	}
+
+	if len(spec.MySQLOperatorSidecarResources.Requests) == 0 {
+		spec.MySQLOperatorSidecarResources.Requests = corev1.ResourceList{
+			corev1.ResourceCPU:    resource.MustParse("10m"),
+			corev1.ResourceMemory: resource.MustParse("64Mi"),
+		}
+	}
 }
 
 // SetDefaults for VolumeSpec

pkg/apis/mysql/v1alpha1/mysqlcluster_types.go

@@ -194,6 +194,15 @@ type PodSpec struct {
 	// Containers allows for user to specify extra sidecar containers to run along with mysql
 	// +optional
 	Containers []core.Container `json:"containers,omitempty"`
+
+	// MetricsExporterResources allows you to specify resources for metrics exporter container
+	// +optional
+	MetricsExporterResources core.ResourceRequirements `json:"metricsExporterResources,omitempty"`
+
+	// MySQLOperatorSidecarResources allows you to specify resources for sidecar container
+	// used to take backups with xtrabackup
+	// +optional
+	MySQLOperatorSidecarResources core.ResourceRequirements `json:"mysqlOperatorSidecarResources,omitempty"`
 }
 
 // VolumeSpec is the desired spec for storing mysql data. Only one of its

pkg/apis/mysql/v1alpha1/zz_generated.deepcopy.go

@@ -648,19 +648,16 @@ func (s *sfsSyncer) ensureResources(name string) core.ResourceRequirements {
 
 	switch name {
 	case containerExporterName:
-		limits = core.ResourceList{
-			core.ResourceCPU:    resource.MustParse("100m"),
-			core.ResourceMemory: resource.MustParse("128Mi"),
-		}
+		return s.cluster.Spec.PodSpec.MetricsExporterResources
+
 	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 s.cluster.Spec.PodSpec.MySQLOperatorSidecarResources
 	}
 
 	return core.ResourceRequirements{