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uninstall.go
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uninstall.go
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package cmd
import (
"fmt"
"io"
"github.com/jenkins-x/jx/pkg/apis/jenkins.io/v1"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/kube"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"gopkg.in/AlecAivazis/survey.v1/terminal"
meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type UninstallOptions struct {
CommonOptions
Namespace string
Context string
Force bool // Force uninstallation - programmatic use only - do not expose to the user
KeepEnvironments bool
}
var (
uninstall_long = templates.LongDesc(`
Uninstalls the Jenkins X platform from a Kubernetes cluster`)
uninstall_example = templates.Examples(`
# Uninstall the Jenkins X platform
jx uninstall`)
)
func NewCmdUninstall(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := &UninstallOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
}
cmd := &cobra.Command{
Use: "uninstall",
Short: "Uninstall the Jenkins X platform",
Long: uninstall_long,
Example: uninstall_example,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
options.addCommonFlags(cmd)
cmd.Flags().StringVarP(&options.Namespace, "namespace", "n", "", "The team namespace to uninstall. Defaults to the current namespace.")
cmd.Flags().StringVarP(&options.Context, "context", "", "", "The kube context to uninstall JX from. This will be compared with the current context to prevent accidental uninstallation from the wrong cluster")
cmd.Flags().BoolVarP(&options.KeepEnvironments, "keep-environments", "", false, "Don't delete environments. Uninstall Jenkins X only.")
return cmd
}
func (o *UninstallOptions) Run() error {
config, _, err := o.Kube().LoadConfig()
if err != nil {
return err
}
jxClient, _, err := o.JXClient()
if err != nil {
return err
}
currentContext := kube.CurrentContextName(config)
namespace := o.Namespace
if namespace == "" {
namespace = kube.CurrentNamespace(config)
}
var targetContext string
if !o.Force {
if o.BatchMode || o.Context != "" {
targetContext = o.Context
} else {
targetContext, err = util.PickValue(fmt.Sprintf("Enter the current context name to confirm "+
"uninstallation of the Jenkins X platform from the %s namespace:", util.ColorInfo(namespace)),
"", true,
"To prevent accidental uninstallation from the wrong cluster, you must enter the current "+
"kubernetes context. This can be found with `kubectl config current-context`",
o.In, o.Out, o.Err)
if err != nil {
return err
}
}
if targetContext != currentContext {
return fmt.Errorf("The context '%s' must match the current context to uninstall", targetContext)
}
}
log.Infof("Removing installation of Jenkins X in team namespace %s\n", util.ColorInfo(namespace))
err = o.cleanupConfig()
if err != nil {
return err
}
envMap, envNames, err := kube.GetEnvironments(jxClient, namespace)
if err != nil {
log.Warnf("Failed to find Environments. Probably not installed yet?. Error: %s\n", err)
}
if !o.KeepEnvironments {
for _, env := range envNames {
release := namespace + "-" + env
err := o.Helm().StatusRelease(namespace, release)
if err != nil {
continue
}
err = o.Helm().DeleteRelease(namespace, release, true)
if err != nil {
log.Warnf("Failed to uninstall environment chart %s: %s\n", release, err)
}
}
}
errs := []error{}
err = o.Helm().StatusRelease(namespace, "jx-prow")
if err == nil {
err := o.Helm().DeleteRelease(namespace, "jx-prow", true)
if err != nil {
errs = append(errs, fmt.Errorf("failed to uninstall the prow helm chart in namespace %s: %s", namespace, err))
}
}
err = o.Helm().StatusRelease(namespace, "jenkins-x")
if err == nil {
err = o.Helm().DeleteRelease(namespace, "jenkins-x", true)
if err != nil {
errs = append(errs, fmt.Errorf("failed to uninstall the jenkins-x helm chart in namespace %s: %s", namespace, err))
}
}
err = jxClient.JenkinsV1().Environments(namespace).DeleteCollection(&meta_v1.DeleteOptions{}, meta_v1.ListOptions{})
if err != nil {
errs = append(errs, fmt.Errorf("failed to delete the environments in namespace %s: %s", namespace, err))
}
err = o.cleanupNamespaces(namespace, envNames, envMap)
if err != nil {
errs = append(errs, fmt.Errorf("failed to cleanup namespaces in namespace %s: %s", namespace, err))
}
if len(errs) > 0 {
return util.CombineErrors(errs...)
}
log.Successf("Jenkins X has been successfully uninstalled from team namespace %s", namespace)
return nil
}
func (o *UninstallOptions) cleanupNamespaces(namespace string, envNames []string, envMap map[string]*v1.Environment) error {
client, err := o.KubeClient()
if err != nil {
return errors.Wrap(err, "getting the kube client")
}
errs := []error{}
err = o.deleteNamespace(namespace)
if err != nil {
errs = append(errs, fmt.Errorf("deleting namespace %s: %s", namespace, err))
}
if !o.KeepEnvironments {
for _, env := range envNames {
envNamespaces := []string{namespace + "-" + env}
envResource := envMap[env]
envNamespace := ""
if envResource != nil {
envNamespace = envResource.Spec.Namespace
}
if envNamespace != "" && envNamespaces[0] != envNamespace && envNamespace != namespace {
envNamespaces = append(envNamespaces, envNamespace)
}
for _, envNamespace := range envNamespaces {
_, err := client.CoreV1().Namespaces().Get(envNamespace, meta_v1.GetOptions{})
if err != nil {
continue
}
err = o.deleteNamespace(envNamespace)
if err != nil {
errs = append(errs, fmt.Errorf("deleting environment namespace %s: %s", envNamespace, err))
}
}
}
}
return util.CombineErrors(errs...)
}
func (o *UninstallOptions) deleteNamespace(namespace string) error {
client, err := o.KubeClient()
if err != nil {
return errors.Wrap(err, "getting the kube client")
}
_, err = client.CoreV1().Namespaces().Get(namespace, meta_v1.GetOptions{})
if err != nil {
// There is nothing to delete if the namespace cannot be retrieved
return nil
}
log.Infof("deleting namespace %s\n", util.ColorInfo(namespace))
err = client.CoreV1().Namespaces().Delete(namespace, &meta_v1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "deleting the namespace '%s' from Kubernetes cluster", namespace)
}
return nil
}
func (o *UninstallOptions) cleanupConfig() error {
authConfigSvc, err := o.CreateAuthConfigService(JenkinsAuthConfigFile)
if err != nil || authConfigSvc == nil {
return nil
}
server := authConfigSvc.Config().CurrentServer
err = authConfigSvc.DeleteServer(server)
if err != nil {
return err
}
chartConfigSvc, err := o.CreateChartmuseumAuthConfigService()
if err != nil {
return err
}
server = chartConfigSvc.Config().CurrentServer
return chartConfigSvc.DeleteServer(server)
}