【Error】elasticsearch修改密码报错，elasticsearch-setup-passwords interactive_failed to authenticate user 'elastic' against

执行命令：./bin/elasticsearch-setup-passwords interactive后报错。

报错信息：

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

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解决方法

需要删除.security-7索引文件

1. 将elasticsearch.yml配置文件中的xpack.security.enabled: true注释掉

2. 重启es

3. 查看索引
   curl -XGET "127.0.0.1:9200/_cat/indices" -H 'Content-Type: application/json'

   如果显示connection refused，将127.0.0.1替换成真实ip地址

   执行成功后会看见.security-7的索引文件

   green open .security-7       UTccV8nQSmC4Y3FW4VjQLQ 1 1 7 1 9.6kb 9.6kb
   1

4. 删除.security-7
curl -XDELETE 127.0.0.1:9200/.security-7
   看到{"acknowledged":true}，表示删除成功

5. 把在第1步中的被注释的配置打开

6. 重启es

7. 执行bin目录下的文件./bin/elasticsearch-setup-passwords interactive

8. 之后就是按照提示输入密码

   future versions of Elasticsearch will require Java 11; your Java version from [/kaysen/tools/java/jre] does not meet this requirement
   Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
   You will be prompted to enter passwords as the process progresses.
   Please confirm that you would like to continue [y/N]y

   Enter password for [elastic]:
   Reenter password for [elastic]:
   Enter password for [apm_system]:
   Reenter password for [apm_system]:
   Enter password for [kibana]:
   Reenter password for [kibana]:
   Enter password for [logstash_system]:
   Reenter password for [logstash_system]:
   Enter password for [beats_system]:
   Reenter password for [beats_system]:
   Enter password for [remote_monitoring_user]:
   Reenter password for [remote_monitoring_user]:
   Changed password for user [apm_system]
   Changed password for user [kibana]
   Changed password for user [logstash_system]
   Changed password for user [beats_system]
   Changed password for user [remote_monitoring_user]
   Changed password for user [elastic]