Merge pull request #1482 from kinvolk/imran/allow-skip-control-plane-…

…update

cli/cmd/cluster: allow to skip the control plane update

cli/cmd/cluster-apply.go

@@ -26,6 +26,7 @@ var (
 	verbose                  bool
 	skipComponents           bool
 	skipPreUpdateHealthCheck bool
+	skipControlPlaneUpdate   bool
 	upgradeKubelets          bool
 )
 
@@ -47,6 +48,8 @@ func init() {
 
 	pf.BoolVarP(&skipPreUpdateHealthCheck, "skip-pre-update-health-check", "", false,
 		"Skip ensuring that cluster is healthy before updating (not recommended)")
+	pf.BoolVarP(&skipControlPlaneUpdate, "skip-control-plane-update", "", false,
+		"Skip updating the control plane (not recommended)")
 
 	pf.BoolVarP(&upgradeKubelets, "upgrade-kubelets", "", false, "Experimentally upgrade self-hosted kubelets")
 }
@@ -62,6 +65,7 @@ func runClusterApply(cmd *cobra.Command, args []string) {
 		UpgradeKubelets:          upgradeKubelets,
 		SkipComponents:           skipComponents,
 		SkipPreUpdateHealthCheck: skipPreUpdateHealthCheck,
+		SkipControlPlaneUpdate:   skipControlPlaneUpdate,
 		Verbose:                  verbose,
 		ConfigPath:               viper.GetString("lokocfg"),
 		ValuesPath:               viper.GetString("lokocfg-vars"),

cli/cmd/cluster/apply.go

@@ -31,6 +31,7 @@ type ApplyOptions struct {
 	UpgradeKubelets          bool
 	SkipComponents           bool
 	SkipPreUpdateHealthCheck bool
+	SkipControlPlaneUpdate   bool
 	Verbose                  bool
 	ConfigPath               string
 	ValuesPath               string
@@ -126,7 +127,7 @@ func Apply(contextLogger *log.Entry, options ApplyOptions) error {
 	}
 
 	// Do controlplane upgrades only if cluster already exists and it is not a managed platform.
-	if exists && !c.platform.Meta().Managed {
+	if exists && !options.SkipControlPlaneUpdate && !c.platform.Meta().Managed {
 		fmt.Printf("\nEnsuring that cluster controlplane is up to date.\n")
 
 		if err := c.upgradeControlPlane(contextLogger, kubeconfig); err != nil {

docs/cli/lokoctl_cluster_apply.md

@@ -21,6 +21,7 @@ lokoctl cluster apply [flags]
       --confirm                        Upgrade cluster without asking for confirmation
   -h, --help                           help for apply
       --skip-components                Skip applying component configuration
+      --skip-control-plane-update      Skip updating the control plane (not recommended)
       --skip-pre-update-health-check   Skip ensuring that cluster is healthy before updating (not recommended)
       --upgrade-kubelets               Experimentally upgrade self-hosted kubelets
   -v, --verbose                        Show output from Terraform