https://blog.csdn.net/weixin_43210350/article/details/109775605
錯誤信息
當為es集群設置完一次密碼之后，再次執行相同的命令
./elasticsearch-setup-passwords interactive
報錯：
Failed to authenticate user 'elastic' against http://172.16.xxx.xxx:9200/_security/_authenticate?pretty
Possible causes include:
* The password for the 'elastic' user has already been changed on this cluster
* Your elasticsearch node is running against a different keystore
This tool used the keystore at /usr/local/elasticsearch-7.2.0/config/elasticsearch.keystore
ERROR: Failed to verify bootstrap password
解決辦法：
刪除 .security-7 索引，然后重新執行上面命令即可，不用重啟es集群
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原文鏈接：https://blog.csdn.net/weixin_43210350/article/details/109775605
沒找到 .security-7 索引，又搜了一下，停止es后刪除data文件夾下的文件后再啟動es，運行交互密碼命令即可