etcd備份與恢復

1. 創(chuàng)建備份目錄mkdir /var/lib/etcd_backup
2. 從etcd中的一個正常節(jié)點上備份etcd數據

ETCDCTL_API=3 /opt/etcd/bin/etcdctl \
--cacert=/opt/etcd/ssl/ca.pem \
--cert=/opt/etcd/ssl/server.pem \
--key=/opt/etcd/ssl/server-key.pem \
--endpoints=https://192.168.113.4:2379 \
snapshot save /var/lib/etcd_backup/etcd_20230616.db

3. 停止所節(jié)點的kube-apiserver和etcd

systemctl stop kube-apiserver && systemctl stop etcd

4. 備份原始etcd的路徑中的文件

mv /var/lib/etcd/default.etcd /var/lib/etcd/default.etcd_bak

5. 所有節(jié)點恢復etcd數據庫

master01執(zhí)行{etcd01節(jié)點}

ETCDCTL_API=3  /opt/etcd/bin/etcdctl snapshot restore  /var/lib/etcd_backup/etcd_20230616.db --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --name etcd-1 --initial-cluster "etcd-1=https://192.168.113.4:2380,etcd-2=https://192.168.113.6:2380,etcd-3=https://192.168.113.5:2380"  --initial-cluster-token etcd-cluster  --initial-advertise-peer-urls https://192.168.113.4:2380  --data-dir=/var/lib/etcd/default.etcd

work01執(zhí)行{etcd02節(jié)點}

ETCDCTL_API=3  /opt/etcd/bin/etcdctl snapshot restore  /var/lib/etcd_backup/etcd_20230616.db --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --name etcd-3 --initial-cluster "etcd-1=https://192.168.113.4:2380,etcd-2=https://192.168.113.6:2380,etcd-3=https://192.168.113.5:2380"  --initial-cluster-token etcd-cluster  --initial-advertise-peer-urls https://192.168.113.5:2380  --data-dir=/var/lib/etcd/default.etcd

work02執(zhí)行{etcd03節(jié)點}

ETCDCTL_API=3  /opt/etcd/bin/etcdctl snapshot restore  /var/lib/etcd_backup/etcd_20230616.db --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --name etcd-2 --initial-cluster "etcd-1=https://192.168.113.4:2380,etcd-2=https://192.168.113.6:2380,etcd-3=https://192.168.113.5:2380"  --initial-cluster-token etcd-cluster  --initial-advertise-peer-urls https://192.168.113.6:2380  --data-dir=/var/lib/etcd/default.etcd

6. 為目錄賦予權限
7. 每個節(jié)點啟動etcd

systemctl start etcd

8. 查看狀態(tài)

ETCDCTL_API=3 /opt/etcd/bin/etcdctl \
--cacert=/opt/etcd/ssl/ca.pem \
--cert=/opt/etcd/ssl/server.pem \
--key=/opt/etcd/ssl/server-key.pem \
--endpoints=https://192.168.113.4:2379,https://192.168.113.6:2379,https://192.168.113.5:2379 \
endpoint health --write-out=table

9. 啟動kubeapi-server

systemctl start kube-apiserver

10.查看k8s集群狀態(tài)文章來源地址http://www.zghlxwxcb.cn/news/detail-509712.html

kubectl get cs

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