Add metrics-server addon

Author: Ole Markus With

addons/metrics-server/README.md

@@ -1,5 +1,7 @@
 # Kubernetes Metrics Server
 
+**This addon is deprecated. Set `spec.metricsServer.enabled: true` instead**
+
 ## User guide
 
 You can find the user guide in

k8s/crds/kops.k8s.io_clusters.yaml

@@ -2088,6 +2088,16 @@ spec:
               masterPublicName:
                 description: MasterPublicName is the external DNS name for the master nodes
                 type: string
+              metricsServer:
+                description: MetricsServerConfig determines the metrics server configuration.
+                properties:
+                  enabled:
+                    description: 'Enabled enables the metrics server. Default: false'
+                    type: boolean
+                  image:
+                    description: 'Image is the docker container used. Default: the latest supported image for the specified kubernetes version.'
+                    type: string
+                type: object
               networkCIDR:
                 description: NetworkCIDR is the CIDR used for the AWS VPC / GCE Network, or otherwise allocated to k8s This is a real CIDR, not the internal k8s network On AWS, it maps to the VPC CIDR.  It is not required on GCE.
                 type: string

pkg/apis/kops/cluster.go

@@ -160,6 +160,8 @@ type ClusterSpec struct {
 
 	// NodeTerminationHandlerConfig determines the cluster autoscaler configuration.
 	NodeTerminationHandler *NodeTerminationHandlerConfig `json:"nodeTerminationHandler,omitempty"`
+	// MetricsServerConfig determines the metrics server configuration.
+	MetricsServer *MetricsServerConfig `json:"metricsServer,omitempty"`
 
 	// Networking configuration
 	Networking *NetworkingSpec `json:"networking,omitempty"`

pkg/apis/kops/componentconfig.go

@@ -803,6 +803,16 @@ type ClusterAutoscalerConfig struct {
 	Image *string `json:"image,omitempty"`
 }
 
+// MetricsServerConfig determines the metrics server configuration.
+type MetricsServerConfig struct {
+	// Enabled enables the metrics server.
+	// Default: false
+	Enabled *bool `json:"enabled,omitempty"`
+	// Image is the docker container used.
+	// Default: the latest supported image for the specified kubernetes version.
+	Image *string `json:"image,omitempty"`
+}
+
 // HasAdmissionController checks if a specific admission controller is enabled
 func (c *KubeAPIServerConfig) HasAdmissionController(name string) bool {
 	for _, x := range c.AdmissionControl {

pkg/apis/kops/v1alpha2/cluster.go

@@ -159,6 +159,8 @@ type ClusterSpec struct {
 
 	// NodeTerminationHandlerConfig determines the cluster autoscaler configuration.
 	NodeTerminationHandler *NodeTerminationHandlerConfig `json:"nodeTerminationHandler,omitempty"`
+	// MetricsServerConfig determines the metrics server configuration.
+	MetricsServer *MetricsServerConfig `json:"metricsServer,omitempty"`
 
 	// Networking configuration
 	Networking *NetworkingSpec `json:"networking,omitempty"`

pkg/apis/kops/v1alpha2/componentconfig.go

@@ -804,6 +804,16 @@ type ClusterAutoscalerConfig struct {
 	Image *string `json:"image,omitempty"`
 }
 
+// MetricsServerConfig determines the metrics server configuration.
+type MetricsServerConfig struct {
+	// Enabled enables the metrics server.
+	// Default: false
+	Enabled *bool `json:"enabled,omitempty"`
+	// Image is the docker container used.
+	// Default: the latest supported image for the specified kubernetes version.
+	Image *string `json:"image,omitempty"`
+}
+
 // HasAdmissionController checks if a specific admission controller is enabled
 func (c *KubeAPIServerConfig) HasAdmissionController(name string) bool {
 	for _, x := range c.AdmissionControl {