forked from kubernetes/kops
/
delete_cluster.go
179 lines (148 loc) · 3.84 KB
/
delete_cluster.go
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package main
import (
"fmt"
"github.com/spf13/cobra"
"k8s.io/kops/pkg/client/simple"
"k8s.io/kops/upup/pkg/api"
"k8s.io/kops/upup/pkg/api/registry"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
"k8s.io/kops/upup/pkg/kutil"
"k8s.io/kops/util/pkg/tables"
"k8s.io/kops/util/pkg/vfs"
"os"
)
type DeleteClusterCmd struct {
Yes bool
Region string
External bool
Unregister bool
}
var deleteCluster DeleteClusterCmd
func init() {
cmd := &cobra.Command{
Use: "cluster CLUSTERNAME [--yes]",
Short: "Delete cluster",
Long: `Deletes a k8s cluster.`,
Run: func(cmd *cobra.Command, args []string) {
err := deleteCluster.Run(args)
if err != nil {
exitWithError(err)
}
},
}
deleteCmd.AddCommand(cmd)
cmd.Flags().BoolVar(&deleteCluster.Yes, "yes", false, "Delete without confirmation")
cmd.Flags().BoolVar(&deleteCluster.Unregister, "unregister", false, "Don't delete cloud resources, just unregister the cluster")
cmd.Flags().BoolVar(&deleteCluster.External, "external", false, "Delete an external cluster")
cmd.Flags().StringVar(&deleteCluster.Region, "region", "", "region")
}
type getter func(o interface{}) interface{}
func (c *DeleteClusterCmd) Run(args []string) error {
var configBase vfs.Path
var clientset simple.Clientset
err := rootCommand.ProcessArgs(args)
if err != nil {
return err
}
clusterName := rootCommand.clusterName
if clusterName == "" {
return fmt.Errorf("--name is required (for safety)")
}
var cloud fi.Cloud
var cluster *api.Cluster
if c.External {
region := c.Region
if region == "" {
return fmt.Errorf("--region is required (when --external)")
}
tags := map[string]string{"KubernetesCluster": clusterName}
cloud, err = awsup.NewAWSCloud(region, tags)
if err != nil {
return fmt.Errorf("error initializing AWS client: %v", err)
}
} else {
clientset, err = rootCommand.Clientset()
if err != nil {
return err
}
cluster, err = clientset.Clusters().Get(clusterName)
if err != nil {
return err
}
if cluster == nil {
return fmt.Errorf("cluster %q not found", clusterName)
}
if clusterName != cluster.Name {
return fmt.Errorf("sanity check failed: cluster name mismatch")
}
configBase, err = registry.ConfigBase(cluster)
if err != nil {
return err
}
}
wouldDeleteCloudResources := false
if !c.Unregister {
if cloud == nil {
cloud, err = cloudup.BuildCloud(cluster)
if err != nil {
return err
}
}
d := &kutil.DeleteCluster{}
d.ClusterName = clusterName
d.Cloud = cloud
resources, err := d.ListResources()
if err != nil {
return err
}
if len(resources) == 0 {
fmt.Printf("No cloud resources to delete\n")
} else {
wouldDeleteCloudResources = true
t := &tables.Table{}
t.AddColumn("TYPE", func(r *kutil.ResourceTracker) string {
return r.Type
})
t.AddColumn("ID", func(r *kutil.ResourceTracker) string {
return r.ID
})
t.AddColumn("NAME", func(r *kutil.ResourceTracker) string {
return r.Name
})
var l []*kutil.ResourceTracker
for _, v := range resources {
l = append(l, v)
}
err := t.Render(l, os.Stdout, "TYPE", "NAME", "ID")
if err != nil {
return err
}
if !c.Yes {
return fmt.Errorf("Must specify --yes to delete")
}
fmt.Fprintf(os.Stdout, "\n")
err = d.DeleteResources(resources)
if err != nil {
return err
}
}
}
if !c.External {
if !c.Yes {
if wouldDeleteCloudResources {
fmt.Printf("\nMust specify --yes to delete cloud resources & unregister cluster\n")
} else {
fmt.Printf("\nMust specify --yes to unregister the cluster\n")
}
return nil
}
err := registry.DeleteAllClusterState(configBase)
if err != nil {
return fmt.Errorf("error removing cluster from state store: %v", err)
}
}
fmt.Printf("\nCluster deleted\n")
return nil
}