kubernetes etcd

news2024/9/21 4:20:15

一、备份

二、回复

官网： https://v1-25.docs.kubernetes.io/zh-cn/docs/tasks/administer-cluster/configure-upgrade-etcd/#restoring-an-etcd-cluster

一、备份

从镜像中拷贝etcdctl二进制命令

输入ctrl+pq快捷键，把容器打入后台

docker run -it --rm reg.westos.org/k8s/etcd:3.5.6-0 sh

获取容器id 从容器拷贝命令到本机

docker container cp 2ddf3f6a944e:/usr/local/bin/etcdctl /usr/local/bin

删除容器

docker rm -f 2ddf3f6a944e

拷贝认证文件等：

备份查看快照状态

ETCDCTL_API=3 etcdctl --endpoints 192.168.67.11:2379 --cert=/root/etcd/server.crt --key=/root/etcd/server.key --cacert=/root/etcd/ca.crt  snapshot save /tmp/snapshotdb

ETCDCTL_API=3 etcdctl --endpoints 192.168.67.11:2379 --cert=/root/etcd/server.crt --key=/root/etcd/server.key --cacert=/root/etcd/ca.crt --write-out=table snapshot status /tmp/snapshotdb

删除集群资源

二、回复

停止所有核心组件

cd /etc/kubernetes/manifests/
ls
mv * /mnt/

移除yaml文件后对应容器自动停止

拷贝文件及命令

[root@docker bin]# scp -r etcdctl k8s1:/usr/local/bin/
[rootadocker etcd]# scp snapshotdb k8s1:/tmp/

从快照恢复

cd /var/lib/etcd/
ls
mv member/ /tmp/
ETCDCTL_API=3 etcdctl snapshot restore --data-dir /var/lib/etcd/ /tmp/snapshotdb
ls
cd /etc/kubernetes/manifests/
mv /mnt/* .

重启所有组件 yaml文件移动回来后容器自动启动