一、备份
生成快照
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| # etcdctl snapshot save <FILENAME>
etcdctl snapshot save etcd-snapshot.db
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二、恢复
2.1 停止所有节点的 ETCD 服务，并删除数据目录
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| systemctl stop etcd
rm -rf /data/etcd/*
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2.2 在所有节点上恢复数据
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| etcdctl snapshot restore etcd-snapshot.db --name etcd01 --data-dir=/data/etcd initial-cluster=etcd01=http://172.20.10.129:2380,etcd02=http://172.20.10.132:2380,etcd03=http://172.20.10.134:2380 initial-advertise-peer-urls=http://172.20.10.129:2380
etcdctl snapshot restore etcd-snapshot.db --name etcd02 --data-dir=/data/etcd initial-cluster=etcd01=http://172.20.10.129:2380,etcd02=http://172.20.10.132:2380,etcd03=http://172.20.10.134:2380 initial-advertise-peer-urls=http://172.20.10.132:2380
etcdctl snapshot restore etcd-snapshot.db --name etcd03 --data-dir=/data/etcd initial-cluster=etcd01=http://172.20.10.129:2380,etcd02=http://172.20.10.132:2380,etcd03=http://172.20.10.134:2380 initial-advertise-peer-urls=http://172.20.10.134:2380
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2.3 重启所有节点的 ETCD 服务