etcd备份k8s集群

etcd备份与恢复指南

最新推荐文章于 2025-11-23 12:47:13 发布

原创最新推荐文章于 2025-11-23 12:47:13 发布 · 215 阅读

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#etcd #kubernetes #数据库 #linux #运维 #云原生 #容器

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1.声明环境变量

# 声明环境变量
export ETCDCTL_API=3
export ETCDCTL_CACERT=/etc/kubernetes/pki/etcd/ca.crt
export ETCDCTL_CERT=/etc/kubernetes/pki/etcd/server.crt
export ETCDCTL_KEY=/etc/kubernetes/pki/etcd/server.key
export ETCDCTL_ENDPOINTS=https://10.139.84.224:2379

2.备份

# 备份快照
etcdctl snapshot save /root/ljz/01_etcd_backup/snapshot/etcd_backup_snapshot_`date +%F`

# 备份目录
cp -a /var/lib/etcd /root/ljz/01_etcd_backup/dir_backup/etcd_backup_`date +%F`

# 检查备份
etcdctl snapshot status /root/ljz/01_etcd_backup/snapshot/etcd_backup_snapshot_`date +%F` -w table

3.停止服务

# 停止服务
systemctl stop kubelet
mv /etc/kubernetes/manifests/etcd.yaml /root/
rm -rf /var/lib/etcd

4.恢复

# 恢复
# --initial-cluster-token若不指定，会使用原集群默认token。
etcdctl snapshot restore /root/ljz/01_etcd_backup/snapshot/etcd_backup_snapshot_`date +%F` \
  --name=k8s-master01 \
  --data-dir=/var/lib/etcd \
  --initial-cluster=k8s-master01=https://10.139.84.224:2380 \
  --initial-advertise-peer-urls=https://10.139.84.224:2380