mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-25 04:33:26 +00:00
kubeadm: remove the "alpha kubelet config enable-dynamic" command
The command was deprecated in 1.19 and can be removed in 1.20.
This commit is contained in:
Lubomir I. Ivanov
parent
e45b8bfe0f
commit
a5a29c54cc
@ -6,7 +6,6 @@ go_library(
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"alpha.go",
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"certs.go",
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"kubeconfig.go",
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"kubelet.go",
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"selfhosting.go",
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],
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importpath = "k8s.io/kubernetes/cmd/kubeadm/app/cmd/alpha",
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@ -25,13 +24,11 @@ go_library(
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"//cmd/kubeadm/app/phases/certs/renewal:go_default_library",
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"//cmd/kubeadm/app/phases/copycerts:go_default_library",
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"//cmd/kubeadm/app/phases/kubeconfig:go_default_library",
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"//cmd/kubeadm/app/phases/kubelet:go_default_library",
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"//cmd/kubeadm/app/phases/selfhosting:go_default_library",
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"//cmd/kubeadm/app/util/apiclient:go_default_library",
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"//cmd/kubeadm/app/util/config:go_default_library",
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"//cmd/kubeadm/app/util/kubeconfig:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/util/duration:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/util/version:go_default_library",
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"//vendor/github.com/lithammer/dedent:go_default_library",
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"//vendor/github.com/pkg/errors:go_default_library",
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"//vendor/github.com/spf13/cobra:go_default_library",
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@ -31,7 +31,6 @@ func NewCmdAlpha(in io.Reader, out io.Writer) *cobra.Command {
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}
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cmd.AddCommand(newCmdCertsUtility(out))
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cmd.AddCommand(newCmdKubeletUtility())
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cmd.AddCommand(newCmdKubeConfigUtility(out))
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cmd.AddCommand(NewCmdSelfhosting(in))
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@ -1,116 +0,0 @@
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package alpha
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import (
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"fmt"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"k8s.io/apimachinery/pkg/util/version"
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"k8s.io/kubernetes/cmd/kubeadm/app/cmd/options"
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cmdutil "k8s.io/kubernetes/cmd/kubeadm/app/cmd/util"
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"k8s.io/kubernetes/cmd/kubeadm/app/constants"
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kubeletphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet"
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kubeconfigutil "k8s.io/kubernetes/cmd/kubeadm/app/util/kubeconfig"
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)
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var (
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kubeletConfigEnableDynamicLongDesc = cmdutil.LongDesc(`
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Enable or update dynamic kubelet configuration for a Node, against the kubelet-config-1.X ConfigMap in the cluster,
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where X is the minor version of the desired kubelet version.
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WARNING: This kubeadm feature is deprecated. Enable only if you know what you are doing, as it
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may have surprising side-effects at this stage.
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` + cmdutil.AlphaDisclaimer)
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kubeletConfigEnableDynamicExample = cmdutil.Examples(fmt.Sprintf(`
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# Enable dynamic kubelet configuration for a Node.
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kubeadm alpha phase kubelet enable-dynamic-config --node-name node-1 --kubelet-version %s
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WARNING: This kubeadm feature is deprecated. Enable only if you know what you are doing, as it
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may have surprising side-effects at this stage.
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`, constants.CurrentKubernetesVersion))
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)
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// newCmdKubeletUtility returns command for `kubeadm phase kubelet`
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func newCmdKubeletUtility() *cobra.Command {
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cmd := &cobra.Command{
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Use: "kubelet",
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Short: "Commands related to handling the kubelet",
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Long: cmdutil.MacroCommandLongDescription,
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}
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cmd.AddCommand(newCmdKubeletConfig())
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return cmd
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}
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// newCmdKubeletConfig returns command for `kubeadm phase kubelet config`
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func newCmdKubeletConfig() *cobra.Command {
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cmd := &cobra.Command{
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Use: "config",
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Short: "Utilities for kubelet configuration",
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Long: cmdutil.MacroCommandLongDescription,
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}
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cmd.AddCommand(newCmdKubeletConfigEnableDynamic())
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return cmd
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}
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// newCmdKubeletConfigEnableDynamic calls cobra.Command for enabling dynamic kubelet configuration on node
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// This feature is still in alpha and an experimental state
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func newCmdKubeletConfigEnableDynamic() *cobra.Command {
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var nodeName, kubeletVersionStr string
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var kubeConfigFile string
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cmd := &cobra.Command{
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Use: "enable-dynamic",
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Short: "DEPRECATED: Enable or update dynamic kubelet configuration for a Node",
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Long: kubeletConfigEnableDynamicLongDesc,
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Example: kubeletConfigEnableDynamicExample,
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Deprecated: "This command is deprecated and will be removed in a future release. Please defer to the official \"Dynamic Kubelet Configuration\" " +
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"guide at k8s.io if you wish to use this feature",
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RunE: func(cmd *cobra.Command, args []string) error {
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if len(nodeName) == 0 {
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return errors.New("the --node-name argument is required")
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}
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if len(kubeletVersionStr) == 0 {
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return errors.New("the --kubelet-version argument is required")
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}
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kubeletVersion, err := version.ParseSemantic(kubeletVersionStr)
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if err != nil {
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return err
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}
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kubeConfigFile = cmdutil.GetKubeConfigPath(kubeConfigFile)
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client, err := kubeconfigutil.ClientSetFromFile(kubeConfigFile)
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if err != nil {
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return err
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}
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return kubeletphase.EnableDynamicConfigForNode(client, nodeName, kubeletVersion)
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},
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Args: cobra.NoArgs,
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}
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options.AddKubeConfigFlag(cmd.Flags(), &kubeConfigFile)
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cmd.Flags().StringVar(&nodeName, options.NodeName, nodeName, "Name of the node that should enable the dynamic kubelet configuration")
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cmd.Flags().StringVar(&kubeletVersionStr, "kubelet-version", kubeletVersionStr, "The desired version for the kubelet")
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return cmd
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}
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@ -4,7 +4,6 @@ go_library(
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name = "go_default_library",
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srcs = [
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"config.go",
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"dynamic.go",
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"flags.go",
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"kubelet.go",
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],
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@ -32,7 +31,6 @@ go_test(
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name = "go_default_test",
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srcs = [
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"config_test.go",
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"dynamic_test.go",
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"flags_test.go",
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],
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embed = [":go_default_library"],
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@ -1,60 +0,0 @@
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubelet
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import (
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"fmt"
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"github.com/pkg/errors"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/version"
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clientset "k8s.io/client-go/kubernetes"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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"k8s.io/kubernetes/cmd/kubeadm/app/util/apiclient"
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)
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// EnableDynamicConfigForNode updates the Node's ConfigSource to enable Dynamic Kubelet Configuration, depending on what version the kubelet is
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// Used at "kubeadm init", "kubeadm join" and "kubeadm upgrade" time
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func EnableDynamicConfigForNode(client clientset.Interface, nodeName string, kubeletVersion *version.Version) error {
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configMapName := kubeadmconstants.GetKubeletConfigMapName(kubeletVersion)
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fmt.Printf("[kubelet] Enabling Dynamic Kubelet Config for Node %q; config sourced from ConfigMap %q in namespace %s\n",
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nodeName, configMapName, metav1.NamespaceSystem)
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fmt.Println("[kubelet] WARNING: The Dynamic Kubelet Config feature is beta, but off by default. It hasn't been well-tested yet at this stage, use with caution.")
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_, err := apiclient.GetConfigMapWithRetry(client, metav1.NamespaceSystem, configMapName)
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if err != nil {
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return errors.Wrap(err, "couldn't get the kubelet configuration ConfigMap")
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}
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// Loop on every falsy return. Return with an error if raised. Exit successfully if true is returned.
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return apiclient.PatchNode(client, nodeName, func(n *v1.Node) {
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patchNodeForDynamicConfig(n, configMapName)
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})
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}
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func patchNodeForDynamicConfig(n *v1.Node, configMapName string) {
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n.Spec.ConfigSource = &v1.NodeConfigSource{
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ConfigMap: &v1.ConfigMapNodeConfigSource{
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Name: configMapName,
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Namespace: metav1.NamespaceSystem,
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KubeletConfigKey: kubeadmconstants.KubeletBaseConfigurationConfigMapKey,
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},
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}
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}
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@ -1,64 +0,0 @@
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubelet
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import (
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"testing"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/version"
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"k8s.io/client-go/kubernetes/fake"
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core "k8s.io/client-go/testing"
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)
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func TestEnableDynamicConfigForNode(t *testing.T) {
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nodeName := "fake-node"
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client := fake.NewSimpleClientset()
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client.PrependReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
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return true, &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: nodeName,
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Labels: map[string]string{v1.LabelHostname: nodeName},
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},
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Spec: v1.NodeSpec{
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ConfigSource: &v1.NodeConfigSource{
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ConfigMap: &v1.ConfigMapNodeConfigSource{
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UID: "",
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},
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},
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},
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}, nil
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})
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client.PrependReactor("get", "configmaps", func(action core.Action) (bool, runtime.Object, error) {
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return true, &v1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: "kubelet-config-1.11",
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Namespace: metav1.NamespaceSystem,
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UID: "fake-uid",
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},
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}, nil
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})
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client.PrependReactor("patch", "nodes", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, nil
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})
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if err := EnableDynamicConfigForNode(client, nodeName, version.MustParseSemantic("v1.11.0")); err != nil {
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t.Errorf("UpdateNodeWithConfigMap: unexpected error %v", err)
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}
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}
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