The connection to the server lb.kubesphere.local:6443 was refused – did you specify the right host or port?

The connection to the server lb.kubesphere.local:6443 was refused - did you specify the right host or port?

由于断电停机，kubernetes集群挂掉，使用任意kubectl 命令会报错：The connection to the server ip:6443 was refused - did you specify the right host or port，重启kubelet也不能恢复，etcd读取数据报错，数据文件损坏

ectd 在读取数据时发生了错误，导致启动失败。继而api-server也无法启动

etcd的数据文件损坏了，要做数据恢复，而我这是实验环境，没搞etcd备份就只能重置集群了

注意，线上使用etcd一定要做高可用和定期备份，否则就悲催了

如何排查解决：The connection to the server <HOST>:6443 was refused - did you specify the right host or port - 知乎 (zhihu.com)

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