edit the grastate.dat file manually and set safe_to_bootstrap to 1 .

[ERROR] WSREP: It may not be safe to bootstrap the cluster from this node. It was not the last one to leave the cluster and may not contain all the updates. To force cluster bootstrap with this node, edit the grastate.dat file manually and set safe_to_bootstrap to 1 .
意思该节点不是最后一个离开集群的节点(最后停掉的节点),可能没有包含所有更新的数据。
解决方式1:
找到grastate.dat文件

[root@localhost mysql]# find / -name grastate.dat

需要手工编辑grastate.dat文件,设置safe_to_bootstrap=1
解决方式2:
逐一排查每个节点下的grastate.dat文件
找到safe_to_bootstrap=1的节点,然后在该节点上启动即可.

解决方式3(没尝试过):
grastate.dat file of the node you intend to use as the first node.
需要把该文件删除 重新启动即可。

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