deprecate kubelet's cadvisor port

cmd/kubelet/app/options/options.go

@@ -342,7 +342,6 @@ func (f *KubeletFlags) AddFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&f.RegisterNode, "register-node", f.RegisterNode, "Register the node with the apiserver. If --kubeconfig is not provided, this flag is irrelevant, as the Kubelet won't have an apiserver to register with. Default=true.")
 	fs.Var(utiltaints.NewTaintsVar(&f.RegisterWithTaints), "register-with-taints", "Register the node with the given list of taints (comma separated \"<key>=<value>:<effect>\"). No-op if register-node is false.")
 	fs.BoolVar(&f.Containerized, "containerized", f.Containerized, "Running kubelet in a container.")
-	fs.Int32Var(&f.CAdvisorPort, "cadvisor-port", f.CAdvisorPort, "The port of the localhost cAdvisor endpoint (set to 0 to disable)")
 
 	// EXPERIMENTAL FLAGS
 	fs.StringVar(&f.KubeletConfigFile, "config", f.KubeletConfigFile, "<Warning: Alpha feature> The Kubelet will load its initial configuration from this file. The path may be absolute or relative; relative paths start at the Kubelet's current working directory. Omit this flag to use the built-in default configuration values. Note that the format of the config file is still Alpha.")
@@ -363,6 +362,8 @@ func (f *KubeletFlags) AddFlags(fs *pflag.FlagSet) {
 	fs.StringVar(&f.BootstrapCheckpointPath, "bootstrap-checkpoint-path", f.BootstrapCheckpointPath, "<Warning: Alpha feature> Path to to the directory where the checkpoints are stored")
 
 	// DEPRECATED FLAGS
+	fs.Int32Var(&f.CAdvisorPort, "cadvisor-port", f.CAdvisorPort, "The port of the localhost cAdvisor endpoint (set to 0 to disable)")
+	fs.MarkDeprecated("cadvisor-port", "The default will change to 0 (disabled) in 1.12, and the cadvisor port will be removed entirely in 1.13")
 	fs.DurationVar(&f.MinimumGCAge.Duration, "minimum-container-ttl-duration", f.MinimumGCAge.Duration, "Minimum age for a finished container before it is garbage collected.  Examples: '300ms', '10s' or '2h45m'")
 	fs.MarkDeprecated("minimum-container-ttl-duration", "Use --eviction-hard or --eviction-soft instead. Will be removed in a future version.")
 	fs.Int32Var(&f.MaxPerPodContainerCount, "maximum-dead-containers-per-container", f.MaxPerPodContainerCount, "Maximum number of old instances to retain per container.  Each container takes up some disk space.")