etcd的备份和恢复

etcdctl工具获取方式

[root@k8s-master network]# yum -y install etcd
[root@k8s-master network]# etcdctl -version 
etcdctl version: 3.3.11
API version: 2

# vi /etc/kubernetes/manifests/etcd.yaml etcd的yaml文件
apiVersion: v1
kind: Pod
metadata:
  labels:
    component: etcd
    tier: control-plane
    ...
        #  监听端口
        - --listen-client-urls=https://127.0.0.1:2379,https://192.168.18.125:2379 #  etcd监听端口
          hostNetwork: true # 和宿主机共享网络 通过宿主机127.0.0.1:2379可以连接容器
  volumes:
  - hostPath: # 挂载宿主机目录
      path: /etc/kubernetes/pki/etcd
      type: DirectoryOrCreate
    name: etcd-certs