elasticsearch 集群无法启动出现如下提示 failed to send join request to master

[node-2] failed to send join request to master [{node-1}{WbcP0pC_T32jWpYvu5is1A}{2_LCVHx1QEaBZYZ7XQEkMg}{10.10.11.200}{10.10.11.200:9300}], reason [RemoteTransportException[[node-1][10.10.11.200:9300][internal:discovery/zen/join]]; nested: IllegalArgumentException[can't add node {node-2}{WbcP0pC_T32jWpYvu5is1A}{p-HCgFLvSFaTynjKSeqXyA}{10.10.11.200}{10.10.11.200:9301}, found existing node {node-1}{WbcP0pC_T32jWpYvu5is1A}{2_LCVHx1QEaBZYZ7XQEkMg}{10.10.11.200}{10.10.11.200:9300} with the same id but is a different node instance]; ]

原因是：是因为复制的elasticsearch文件夹下包含了data文件中示例一的节点数据，需要把示例二data文件下的文件清空。

删除es集群data数据库文件夹下所有文件即可

https://blog.csdn.net/gamer_gyt/article/details/59077189