forked from rancher/rke
/
remove.go
171 lines (150 loc) · 4.17 KB
/
remove.go
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package cmd
import (
"bufio"
"context"
"fmt"
"os"
"strings"
"github.com/rancher/rke/cluster"
"github.com/rancher/rke/dind"
"github.com/rancher/rke/hosts"
"github.com/rancher/rke/log"
"github.com/rancher/rke/pki"
"github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
func RemoveCommand() cli.Command {
removeFlags := []cli.Flag{
cli.StringFlag{
Name: "config",
Usage: "Specify an alternate cluster YAML file",
Value: pki.ClusterConfig,
EnvVar: "RKE_CONFIG",
},
cli.BoolFlag{
Name: "force",
Usage: "Force removal of the cluster",
},
cli.BoolFlag{
Name: "local",
Usage: "Remove Kubernetes cluster locally",
},
cli.BoolFlag{
Name: "dind",
Usage: "Remove Kubernetes cluster deployed in dind mode",
},
}
removeFlags = append(removeFlags, commonFlags...)
return cli.Command{
Name: "remove",
Usage: "Teardown the cluster and clean cluster nodes",
Action: clusterRemoveFromCli,
Flags: removeFlags,
}
}
func ClusterRemove(
ctx context.Context,
rkeConfig *v3.RancherKubernetesEngineConfig,
dialersOptions hosts.DialersOptions,
flags cluster.ExternalFlags) error {
log.Infof(ctx, "Tearing down Kubernetes cluster")
kubeCluster, err := cluster.InitClusterObject(ctx, rkeConfig, flags)
if err != nil {
return err
}
if err := kubeCluster.SetupDialers(ctx, dialersOptions); err != nil {
return err
}
err = kubeCluster.TunnelHosts(ctx, flags)
if err != nil {
return err
}
logrus.Debugf("Starting Cluster removal")
err = kubeCluster.ClusterRemove(ctx)
if err != nil {
return err
}
log.Infof(ctx, "Cluster removed successfully")
return nil
}
func clusterRemoveFromCli(ctx *cli.Context) error {
if ctx.Bool("local") {
return clusterRemoveLocal(ctx)
}
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
return fmt.Errorf("Failed to resolve cluster file: %v", err)
}
force := ctx.Bool("force")
if !force {
reader := bufio.NewReader(os.Stdin)
fmt.Printf("Are you sure you want to remove Kubernetes cluster [y/n]: ")
input, err := reader.ReadString('\n')
input = strings.TrimSpace(input)
if err != nil {
return err
}
if input != "y" && input != "Y" {
return nil
}
}
if ctx.Bool("dind") {
return clusterRemoveDind(ctx)
}
rkeConfig, err := cluster.ParseConfig(clusterFile)
if err != nil {
return fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig, err = setOptionsFromCLI(ctx, rkeConfig)
if err != nil {
return err
}
// setting up the flags
flags := cluster.GetExternalFlags(false, false, false, "", filePath)
return ClusterRemove(context.Background(), rkeConfig, hosts.DialersOptions{}, flags)
}
func clusterRemoveLocal(ctx *cli.Context) error {
var rkeConfig *v3.RancherKubernetesEngineConfig
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
log.Warnf(context.Background(), "Failed to resolve cluster file, using default cluster instead")
rkeConfig = cluster.GetLocalRKEConfig()
} else {
rkeConfig, err = cluster.ParseConfig(clusterFile)
if err != nil {
return fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig.Nodes = []v3.RKEConfigNode{*cluster.GetLocalRKENodeConfig()}
}
rkeConfig, err = setOptionsFromCLI(ctx, rkeConfig)
if err != nil {
return err
}
// setting up the flags
flags := cluster.GetExternalFlags(true, false, false, "", filePath)
return ClusterRemove(context.Background(), rkeConfig, hosts.DialersOptions{}, flags)
}
func clusterRemoveDind(ctx *cli.Context) error {
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
return fmt.Errorf("Failed to resolve cluster file: %v", err)
}
rkeConfig, err := cluster.ParseConfig(clusterFile)
if err != nil {
return fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig, err = setOptionsFromCLI(ctx, rkeConfig)
if err != nil {
return err
}
for _, node := range rkeConfig.Nodes {
if err = dind.RmoveDindContainer(context.Background(), node.Address); err != nil {
return err
}
}
localKubeConfigPath := pki.GetLocalKubeConfig(filePath, "")
// remove the kube config file
pki.RemoveAdminConfig(context.Background(), localKubeConfigPath)
return err
}