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137 lines
3.6 KiB
137 lines
3.6 KiB
/*
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Copyright The Helm 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 main
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"github.com/spf13/cobra"
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"k8s.io/client-go/kubernetes"
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"k8s.io/helm/cmd/helm/installer"
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"k8s.io/helm/pkg/helm"
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"k8s.io/helm/pkg/helm/helmpath"
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"k8s.io/helm/pkg/proto/hapi/release"
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)
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const resetDesc = `
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This command uninstalls Tiller (the Helm server-side component) from your
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Kubernetes Cluster and optionally deletes local configuration in
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$HELM_HOME (default ~/.helm/)
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`
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type resetCmd struct {
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force bool
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removeHelmHome bool
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namespace string
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out io.Writer
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home helmpath.Home
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client helm.Interface
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kubeClient kubernetes.Interface
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}
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func newResetCmd(client helm.Interface, out io.Writer) *cobra.Command {
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d := &resetCmd{
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out: out,
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client: client,
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}
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cmd := &cobra.Command{
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Use: "reset",
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Short: "uninstalls Tiller from a cluster",
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Long: resetDesc,
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PreRunE: func(cmd *cobra.Command, args []string) error {
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if err := setupConnection(); !d.force && err != nil {
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return err
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}
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return nil
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},
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RunE: func(cmd *cobra.Command, args []string) error {
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if len(args) != 0 {
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return errors.New("This command does not accept arguments")
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}
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d.namespace = settings.TillerNamespace
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d.home = settings.Home
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d.client = ensureHelmClient(d.client)
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return d.run()
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},
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}
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f := cmd.Flags()
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settings.AddFlagsTLS(f)
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f.BoolVarP(&d.force, "force", "f", false, "forces Tiller uninstall even if there are releases installed, or if Tiller is not in ready state. Releases are not deleted.)")
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f.BoolVar(&d.removeHelmHome, "remove-helm-home", false, "if set deletes $HELM_HOME")
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// set defaults from environment
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settings.InitTLS(f)
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return cmd
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}
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// runReset uninstalls tiller from Kubernetes Cluster and deletes local config
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func (d *resetCmd) run() error {
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if d.kubeClient == nil {
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_, c, err := getKubeClient(settings.KubeContext, settings.KubeConfig)
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if err != nil {
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return fmt.Errorf("could not get kubernetes client: %s", err)
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}
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d.kubeClient = c
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}
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res, err := d.client.ListReleases(
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helm.ReleaseListStatuses([]release.Status_Code{release.Status_DEPLOYED}),
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)
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if !d.force && err != nil {
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return prettyError(err)
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}
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if !d.force && res != nil && len(res.Releases) > 0 {
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return fmt.Errorf("there are still %d deployed releases (Tip: use --force to remove Tiller. Releases will not be deleted.)", len(res.Releases))
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}
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if err := installer.Uninstall(d.kubeClient, &installer.Options{Namespace: d.namespace}); err != nil {
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return fmt.Errorf("error unstalling Tiller: %s", err)
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}
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if d.removeHelmHome {
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if err := deleteDirectories(d.home, d.out); err != nil {
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return err
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}
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}
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fmt.Fprintln(d.out, "Tiller (the Helm server-side component) has been uninstalled from your Kubernetes Cluster.")
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return nil
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}
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// deleteDirectories deletes $HELM_HOME
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func deleteDirectories(home helmpath.Home, out io.Writer) error {
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if _, err := os.Stat(home.String()); err == nil {
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fmt.Fprintf(out, "Deleting %s \n", home.String())
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if err := os.RemoveAll(home.String()); err != nil {
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return fmt.Errorf("Could not remove %s: %s", home.String(), err)
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}
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}
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return nil
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}
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