Merge pull request #17269 from janetkuo/autoscale-deployments

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docs/man/man1/kubectl-autoscale.1

@@ -3,7 +3,7 @@
 
 .SH NAME
 .PP
-kubectl autoscale \- Auto\-scale a replication controller
+kubectl autoscale \- Auto\-scale a deployment or replication controller
 
 
 .SH SYNOPSIS
@@ -16,7 +16,7 @@ kubectl autoscale \- Auto\-scale a replication controller
 Creates an autoscaler that automatically chooses and sets the number of pods that run in a kubernetes cluster.
 
 .PP
-Looks up a replication controller by name and creates an autoscaler that uses this replication controller as a reference.
+Looks up a deployment or replication controller by name and creates an autoscaler that uses this deployment or replication controller as a reference.
 An autoscaler can automatically increase or decrease number of pods deployed within the system as needed.
 
 
@@ -180,8 +180,8 @@ An autoscaler can automatically increase or decrease number of pods deployed wit
 .RS
 
 .nf
-# Auto scale a replication controller "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
-$ kubectl autoscale rc foo \-\-min=2 \-\-max=10
+# Auto scale a deployment "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
+$ kubectl autoscale deployment foo \-\-min=2 \-\-max=10
 
 # Auto scale a replication controller "foo", with the number of pods between 1 to 5, target CPU utilization at 80%:
 $ kubectl autoscale rc foo \-\-max=5 \-\-cpu\-percent=80

docs/user-guide/horizontal-pod-autoscaling/hpa-php-apache.yaml

@@ -8,6 +8,7 @@ spec:
     kind: ReplicationController
     name: php-apache
     namespace: default
+    subresource: scale
   minReplicas: 1
   maxReplicas: 10
   cpuUtilization:

docs/user-guide/kubectl/kubectl.md

@@ -80,7 +80,7 @@ kubectl
 * [kubectl api-versions](kubectl_api-versions.md)	 - Print the supported API versions on the server, in the form of "group/version".
 * [kubectl apply](kubectl_apply.md)	 - Apply a configuration to a resource by filename or stdin
 * [kubectl attach](kubectl_attach.md)	 - Attach to a running container.
-* [kubectl autoscale](kubectl_autoscale.md)	 - Auto-scale a replication controller
+* [kubectl autoscale](kubectl_autoscale.md)	 - Auto-scale a deployment or replication controller
 * [kubectl cluster-info](kubectl_cluster-info.md)	 - Display cluster info
 * [kubectl config](kubectl_config.md)	 - config modifies kubeconfig files
 * [kubectl convert](kubectl_convert.md)	 - Convert config files between different API versions
@@ -105,7 +105,7 @@ kubectl
 * [kubectl stop](kubectl_stop.md)	 - Deprecated: Gracefully shut down a resource by name or filename.
 * [kubectl version](kubectl_version.md)	 - Print the client and server version information.
 
-###### Auto generated by spf13/cobra on 10-Nov-2015
+###### Auto generated by spf13/cobra on 13-Nov-2015
 
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 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl.md?pixel)]()

docs/user-guide/kubectl/kubectl_autoscale.md

@@ -33,14 +33,14 @@ Documentation for other releases can be found at
 
 ## kubectl autoscale
 
-Auto-scale a replication controller
+Auto-scale a deployment or replication controller
 
 ### Synopsis
 
 
 Creates an autoscaler that automatically chooses and sets the number of pods that run in a kubernetes cluster.
 
-Looks up a replication controller by name and creates an autoscaler that uses this replication controller as a reference.
+Looks up a deployment or replication controller by name and creates an autoscaler that uses this deployment or replication controller as a reference.
 An autoscaler can automatically increase or decrease number of pods deployed within the system as needed.
 
 ```
@@ -50,8 +50,8 @@ kubectl autoscale (-f FILENAME | TYPE NAME | TYPE/NAME) [--min=MINPODS] --max=MA
 ### Examples
 
 ```
-# Auto scale a replication controller "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
-$ kubectl autoscale rc foo --min=2 --max=10
+# Auto scale a deployment "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
+$ kubectl autoscale deployment foo --min=2 --max=10
 
 # Auto scale a replication controller "foo", with the number of pods between 1 to 5, target CPU utilization at 80%:
 $ kubectl autoscale rc foo --max=5 --cpu-percent=80
@@ -108,7 +108,7 @@ $ kubectl autoscale rc foo --max=5 --cpu-percent=80
 
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
 
-###### Auto generated by spf13/cobra on 6-Nov-2015
+###### Auto generated by spf13/cobra on 13-Nov-2015
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_autoscale.md?pixel)]()

hack/test-cmd.sh

@@ -168,7 +168,7 @@ KUBE_API_VERSIONS="v1,extensions/v1beta1" "${KUBE_OUTPUT_HOSTBIN}/kube-apiserver
   --kubelet-port=${KUBELET_PORT} \
   --runtime-config=api/v1 \
   --cert-dir="${TMPDIR:-/tmp/}" \
-  --runtime_config="extensions/v1beta1=true" \
+  --runtime_config="extensions/v1beta1/deployments=true" \
   --service-cluster-ip-range="10.0.0.0/24" 1>&2 &
 APISERVER_PID=$!
 
@@ -957,6 +957,19 @@ __EOF__
   # Clean up
   kubectl delete rc frontend "${kube_flags[@]}"
 
+  ### Auto scale deployment 
+  # Pre-condition: no deployment is running
+  kube::test::get_object_assert deployment "{{range.items}}{{$id_field}}:{{end}}" ''
+  # Command
+  kubectl create -f examples/extensions/deployment.yaml "${kube_flags[@]}"
+  kube::test::get_object_assert deployment "{{range.items}}{{$id_field}}:{{end}}" 'nginx-deployment:'
+  # autoscale 2~3 pods, default CPU utilization (80%)
+  kubectl autoscale deployment nginx-deployment "${kube_flags[@]}" --min=2 --max=3
+  kube::test::get_object_assert 'hpa nginx-deployment' "{{$hpa_min_field}} {{$hpa_max_field}} {{$hpa_cpu_field}}" '2 3 80'
+  # Clean up
+  kubectl delete hpa nginx-deployment "${kube_flags[@]}"
+  kubectl delete deployment nginx-deployment "${kube_flags[@]}"
+
   ######################
   # Multiple Resources #
   ######################

pkg/kubectl/cmd/autoscale.go

@@ -31,22 +31,21 @@ import (
 const (
 	autoscaleLong = `Creates an autoscaler that automatically chooses and sets the number of pods that run in a kubernetes cluster.
 
-Looks up a replication controller by name and creates an autoscaler that uses this replication controller as a reference.
+Looks up a deployment or replication controller by name and creates an autoscaler that uses this deployment or replication controller as a reference.
 An autoscaler can automatically increase or decrease number of pods deployed within the system as needed.`
 
-	autoscaleExample = `# Auto scale a replication controller "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
-$ kubectl autoscale rc foo --min=2 --max=10
+	autoscaleExample = `# Auto scale a deployment "foo", with the number of pods between 2 to 10, target CPU utilization at a default value that server applies:
+$ kubectl autoscale deployment foo --min=2 --max=10
 
 # Auto scale a replication controller "foo", with the number of pods between 1 to 5, target CPU utilization at 80%:
 $ kubectl autoscale rc foo --max=5 --cpu-percent=80`
 )
 
-// TODO: support autoscale for deployments
 func NewCmdAutoscale(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 	filenames := []string{}
 	cmd := &cobra.Command{
 		Use:     "autoscale (-f FILENAME | TYPE NAME | TYPE/NAME) [--min=MINPODS] --max=MAXPODS [--cpu-percent=CPU] [flags]",
-		Short:   "Auto-scale a replication controller",
+		Short:   "Auto-scale a deployment or replication controller",
 		Long:    autoscaleLong,
 		Example: autoscaleExample,
 		Run: func(cmd *cobra.Command, args []string) {

pkg/kubectl/cmd/util/factory.go

@@ -295,8 +295,7 @@ func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
 		},
 		CanBeAutoscaled: func(kind string) error {
 			switch kind {
-			// TODO: support autoscale for deployments
-			case "ReplicationController":
+			case "ReplicationController", "Deployment":
 				// nothing to do here
 			default:
 				return fmt.Errorf("cannot autoscale a %s", kind)