kubelet: remove alpha warnings for CNI flags

CNI is no longer alpha and is widely used by almost every Kubernetes cluster, we should remove the alpha warnings that were originally added from the early days of CNI

Signed-off-by: Andrew Sy Kim <[email protected]>

Author: andrewsykim

cmd/kubelet/app/options/container_runtime.go

@@ -52,7 +52,6 @@ func NewContainerRuntimeOptions() *config.ContainerRuntimeOptions {
 		PodSandboxImage:            defaultPodSandboxImage,
 		ImagePullProgressDeadline:  metav1.Duration{Duration: 1 * time.Minute},
 
-		//Alpha feature
 		CNIBinDir:   "/opt/cni/bin",
 		CNIConfDir:  "/etc/cni/net.d",
 		CNICacheDir: "/var/lib/cni/cache",

pkg/kubelet/config/flags.go

@@ -94,9 +94,9 @@ func (s *ContainerRuntimeOptions) AddFlags(fs *pflag.FlagSet) {
 	fs.DurationVar(&s.ImagePullProgressDeadline.Duration, "image-pull-progress-deadline", s.ImagePullProgressDeadline.Duration, fmt.Sprintf("If no pulling progress is made before this deadline, the image pulling will be cancelled. %s", dockerOnlyWarning))
 
 	// Network plugin settings for Docker.
-	fs.StringVar(&s.NetworkPluginName, "network-plugin", s.NetworkPluginName, fmt.Sprintf("<Warning: Alpha feature> The name of the network plugin to be invoked for various events in kubelet/pod lifecycle. %s", dockerOnlyWarning))
-	fs.StringVar(&s.CNIConfDir, "cni-conf-dir", s.CNIConfDir, fmt.Sprintf("<Warning: Alpha feature> The full path of the directory in which to search for CNI config files. %s", dockerOnlyWarning))
-	fs.StringVar(&s.CNIBinDir, "cni-bin-dir", s.CNIBinDir, fmt.Sprintf("<Warning: Alpha feature> A comma-separated list of full paths of directories in which to search for CNI plugin binaries. %s", dockerOnlyWarning))
-	fs.StringVar(&s.CNICacheDir, "cni-cache-dir", s.CNICacheDir, fmt.Sprintf("<Warning: Alpha feature> The full path of the directory in which CNI should store cache files. %s", dockerOnlyWarning))
-	fs.Int32Var(&s.NetworkPluginMTU, "network-plugin-mtu", s.NetworkPluginMTU, fmt.Sprintf("<Warning: Alpha feature> The MTU to be passed to the network plugin, to override the default. Set to 0 to use the default 1460 MTU. %s", dockerOnlyWarning))
+	fs.StringVar(&s.NetworkPluginName, "network-plugin", s.NetworkPluginName, fmt.Sprintf("The name of the network plugin to be invoked for various events in kubelet/pod lifecycle. %s", dockerOnlyWarning))
+	fs.StringVar(&s.CNIConfDir, "cni-conf-dir", s.CNIConfDir, fmt.Sprintf("The full path of the directory in which to search for CNI config files. %s", dockerOnlyWarning))
+	fs.StringVar(&s.CNIBinDir, "cni-bin-dir", s.CNIBinDir, fmt.Sprintf("A comma-separated list of full paths of directories in which to search for CNI plugin binaries. %s", dockerOnlyWarning))
+	fs.StringVar(&s.CNICacheDir, "cni-cache-dir", s.CNICacheDir, fmt.Sprintf("The full path of the directory in which CNI should store cache files. %s", dockerOnlyWarning))
+	fs.Int32Var(&s.NetworkPluginMTU, "network-plugin-mtu", s.NetworkPluginMTU, fmt.Sprintf("The MTU to be passed to the network plugin, to override the default. Set to 0 to use the default 1460 MTU. %s", dockerOnlyWarning))
 }