k8s etcd 备份还原-526互联

先根据etcd找到hostpatch 持久化目录，/var/lib/etcd

进入pod备份：
ETCDCTL_API=3 etcdctl snapshot save snap.db \
  --endpoints=https://127.0.0.1:2379 \
  --cacert=/etc/kubernetes/pki/etcd/ca.crt \
  --cert=/etc/kubernetes/pki/etcd/server.crt \
  --key=/etc/kubernetes/pki/etcd/server.key

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snap.db已经保存备份完成，对应数据存在/etc/kubernetes/manifests中