Add --control-planes to start

Signed-off-by: Ling Samuel <lingsamuelgrace@gmail.com>

cmd/minikube/cmd/node_add.go

@@ -21,7 +21,6 @@ import (
  "github.com/spf13/viper"
  "k8s.io/minikube/pkg/minikube/cni"
  "k8s.io/minikube/pkg/minikube/config"
- "k8s.io/minikube/pkg/minikube/constants"
  "k8s.io/minikube/pkg/minikube/driver"
  "k8s.io/minikube/pkg/minikube/exit"
  "k8s.io/minikube/pkg/minikube/mustload"
@@ -68,7 +67,7 @@ var nodeAddCmd = &cobra.Command{
  }
 
  if n.ControlPlane {
- n.Port = constants.APIServerPort
+ n.Port = cc.KubernetesConfig.NodePort
  }
 
  // Make sure to decrease the default amount of memory we use per VM if this is the first worker node

cmd/minikube/cmd/start.go

@@ -131,6 +131,13 @@ func platform() string {
 func runStart(cmd *cobra.Command, args []string) {
  register.SetEventLogPath(localpath.EventLog(ClusterFlagValue()))
 
+ controlPlanesNum := viper.GetInt(controlPlanes)
+ nodesNum := viper.GetInt(nodes)
+ if controlPlanesNum > nodesNum {
+ out.WarningT(fmt.Sprintf("control planes number %v larger than nodes number %v, enlarge nodes to %v.", controlPlanesNum, nodesNum, controlPlanesNum))
+ viper.Set(nodes, controlPlanesNum)
+ }
+
  out.SetJSON(outputFormat == "json")
  if err := pkgtrace.Initialize(viper.GetString(trace)); err != nil {
  exit.Message(reason.Usage, "error initializing tracing: {{.Error}}", out.V{"Error": err.Error()})
@@ -359,6 +366,7 @@ func startWithDriver(cmd *cobra.Command, starter node.Starter, existing *config.
  }
  }
 
+ numControlPlanes := viper.GetInt(controlPlanes)
  numNodes := viper.GetInt(nodes)
  if existing != nil {
  if numNodes > 1 {
@@ -381,6 +389,10 @@ func startWithDriver(cmd *cobra.Command, starter node.Starter, existing *config.
  PrimaryControlPlane: false,
  KubernetesVersion: starter.Cfg.KubernetesConfig.KubernetesVersion,
  }
+ if i < numControlPlanes {
+ n.ControlPlane = true
+ n.Port = starter.Cfg.KubernetesConfig.NodePort
+ }
  out.Ln("") // extra newline for clarity on the command line
  err := node.Add(starter.Cfg, n, viper.GetBool(deleteOnFailure))
  if err != nil {

cmd/minikube/cmd/start_flags.go

@@ -102,6 +102,7 @@ const (
  hostOnlyNicType = "host-only-nic-type"
  natNicType = "nat-nic-type"
  nodes = "nodes"
+ controlPlanes = "control-planes"
  preload = "preload"
  deleteOnFailure = "delete-on-failure"
  forceSystemd = "force-systemd"
@@ -150,6 +151,7 @@ func initMinikubeFlags() {
  startCmd.Flags().Bool(autoUpdate, true, "If set, automatically updates drivers to the latest version. Defaults to true.")
  startCmd.Flags().Bool(installAddons, true, "If set, install addons. Defaults to true.")
  startCmd.Flags().IntP(nodes, "n", 1, "The number of nodes to spin up. Defaults to 1.")
+ startCmd.Flags().Int(controlPlanes, 1, "The number of control planes to spin up. Defaults to 1.")
  startCmd.Flags().Bool(preload, true, "If set, download tarball of preloaded images if available to improve start time. Defaults to true.")
  startCmd.Flags().Bool(deleteOnFailure, false, "If set, delete the current cluster if start fails and try again. Defaults to false.")
  startCmd.Flags().Bool(forceSystemd, false, "If set, force the container runtime to use sytemd as cgroup manager. Currently available for docker and crio. Defaults to false.")

site/content/en/docs/commands/start.md

@@ -30,6 +30,7 @@ minikube start [flags]
  --cache-images If true, cache docker images for the current bootstrapper and load them into the machine. Always false with --driver=none. (default true)
  --cni string CNI plug-in to use. Valid options: auto, bridge, calico, cilium, flannel, kindnet, or path to a CNI manifest (default: auto)
  --container-runtime string The container runtime to be used (docker, cri-o, containerd). (default "docker")
+ --control-planes int The number of control planes to spin up. Defaults to 1. (default 1)
  --cpus int Number of CPUs allocated to Kubernetes. (default 2)
  --cri-socket string The cri socket path to be used.
  --delete-on-failure If set, delete the current cluster if start fails and try again. Defaults to false.