mirror of
https://github.com/kubesphere/kubekey.git
synced 2025-12-26 01:22:51 +00:00
138 lines
3.5 KiB
Go
138 lines
3.5 KiB
Go
/*
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Copyright 2020 The KubeSphere 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 delete
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import (
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"bufio"
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"fmt"
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kubekeyapi "github.com/kubesphere/kubekey/pkg/apis/kubekey/v1alpha1"
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"github.com/kubesphere/kubekey/pkg/config"
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"github.com/kubesphere/kubekey/pkg/util/executor"
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"github.com/kubesphere/kubekey/pkg/util/manager"
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"github.com/kubesphere/kubekey/pkg/util/ssh"
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"github.com/pkg/errors"
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log "github.com/sirupsen/logrus"
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"os"
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"strings"
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)
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func ResetCluster(clusterCfgFile string, logger *log.Logger, verbose bool) error {
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cfg, err := config.ParseClusterCfg(clusterCfgFile, "", "", false, logger)
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if err != nil {
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return errors.Wrap(err, "Failed to download cluster config")
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}
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return Execute(executor.NewExecutor(&cfg.Spec, logger, verbose, false, true))
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}
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func Execute(executor *executor.Executor) error {
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mgr, err := executor.CreateManager()
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if err != nil {
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return err
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}
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return ExecTasks(mgr)
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}
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func ExecTasks(mgr *manager.Manager) error {
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resetTasks := []manager.Task{
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{Task: ResetKubeCluster, ErrMsg: "Failed to reset kube cluster"},
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}
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for _, step := range resetTasks {
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if err := step.Run(mgr); err != nil {
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return errors.Wrap(err, step.ErrMsg)
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}
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}
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mgr.Logger.Infoln("Successful.")
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return nil
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}
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func ResetKubeCluster(mgr *manager.Manager) error {
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reader := bufio.NewReader(os.Stdin)
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input, err := Confirm(reader)
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if err != nil {
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return err
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}
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if input == "no" {
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os.Exit(0)
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}
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mgr.Logger.Infoln("Resetting kubernetes cluster ...")
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return mgr.RunTaskOnK8sNodes(resetKubeCluster, true)
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}
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var clusterFiles = []string{
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"/usr/local/bin/etcd",
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"/etc/ssl/etcd",
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"/var/lib/etcd",
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"/etc/etcd.env",
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"/etc/kubernetes",
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"/etc/systemd/system/etcd.service",
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"/var/log/calico",
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"/etc/cni",
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"/var/log/pods/",
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"/var/lib/cni",
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"/var/lib/calico",
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"/run/calico",
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"/run/flannel",
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"/etc/flannel",
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}
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var cmdsList = []string{
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"iptables -F",
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"iptables -X",
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"iptables -F -t nat",
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"iptables -X -t nat",
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"ip link del kube-ipvs0",
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"ip link del nodelocaldns",
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}
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func resetKubeCluster(mgr *manager.Manager, _ *kubekeyapi.HostCfg, _ ssh.Connection) error {
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_, _ = mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubeadm reset -f\"", 0, true)
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fmt.Println(strings.Join(cmdsList, " && "))
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_, _ = mgr.Runner.ExecuteCmd(fmt.Sprintf("sudo -E /bin/sh -c \"%s\"", strings.Join(cmdsList, " && ")), 0, true)
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_ = deleteFiles(mgr)
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return nil
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}
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func deleteFiles(mgr *manager.Manager) error {
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_, _ = mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"systemctl stop etcd && exit 0\"", 0, true)
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for _, file := range clusterFiles {
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_, _ = mgr.Runner.ExecuteCmd(fmt.Sprintf("sudo -E /bin/sh -c \"rm -rf %s\"", file), 0, false)
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}
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_, _ = mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"systemctl daemon-reload && exit 0\"", 0, true)
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return nil
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}
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func Confirm(reader *bufio.Reader) (string, error) {
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for {
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fmt.Printf("Are you sure to delete this cluster? [yes/no]: ")
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input, err := reader.ReadString('\n')
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if err != nil {
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return "", err
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}
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input = strings.TrimSpace(input)
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if input != "" && (input == "yes" || input == "no") {
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return input, nil
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}
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}
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}
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