etcd資料備份

###etcd備份資料

cp etcdctl /usr/bin/

#檢視etcd狀態

etcdctl_api=3 etcdctl --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --endpoints= endpoint health

備份資料

etcdctl_api=3 etcdctl --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --endpoints= snapshot s**e /data/etcd_backup_dir/etcd-snapshot-`date +%y%m%d`.db

備份指令碼

####為避免集群伺服器崩潰建議將備份資料在其它伺服器上也儲存乙份！

#!/usr/bin/env bash

date;

cacert="/opt/etcd/ssl/ca.pem"

cert="/opt/etcd/ssl/server.pem"

eky="/opt/etcd/ssl/server-key.pem"

endpoints="172.22.154.215:2379"

etcdctl_api=3 etcdctl \

--cacert="$" --cert="$" --key="$" \

--endpoints=$ \

snapshot s**e /data/etcd_backup_dir/etcd-snapshot-`date +%y%m%d`.db

# 備份保留30天

find /data/etcd_backup_dir/ -name *.db -mtime +30 -exec rm -f {} \;

#恢復驗證

停止kube-apiserver

停止etcd集群

移走etcd資料

cd /var/lib/etcd/

mv default.etcd default.etcd.bak

拷貝備份資料

scp etcd-snapshot-20220328.db node216:/data/etcd_backup_dir/

scp etcd-snapshot-20220328.db node217:/data/etcd_backup_dir/

恢復資料

etcdctl_api=3 etcdctl snapshot restore /data/etcd_backup_dir/etcd-snapshot-20220328.db \

--name etcd-1 \

--initial-cluster "etcd-1=" \

--initial-cluster-token etcd-cluster \

--initial-advertise-peer-urls \

--data-dir=/var/lib/etcd/default.etcd

etcdctl_api=3 etcdctl snapshot restore /data/etcd_backup_dir/etcd-snapshot-20220328.db \

--name etcd-2 \

--initial-cluster "etcd-1=" \

--initial-cluster-token etcd-cluster \

--initial-advertise-peer-urls \

--data-dir=/var/lib/etcd/default.etcd

etcdctl_api=3 etcdctl snapshot restore /data/etcd_backup_dir/etcd-snapshot-20220328.db \

--name etcd-3 \

--initial-cluster "etcd-1=" \

--initial-cluster-token etcd-cluster \

--initial-advertise-peer-urls \

--data-dir=/var/lib/etcd/default.etcd

啟動etcd集群

systemctl start etcd

檢視集群狀態

systemctl status etcd

啟動kube-apiserver

systemctl start kube-apiserver

systemctl status kube-apiserver

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