当elasticsearch 设置用户名密码认证：

[elk@goya config]$ elasticsearch-setup-passwords interactive

Failed to authenticate user 'elastic' against https://192.168.88.3:9200/_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/config/elasticsearch.keystore

You can use the `elasticsearch-reset-password` CLI tool to reset the password of the 'elastic' user
ERROR: Failed to verify bootstrap password

[elk@goya config]$ elasticsearch-reset-password -u elastic
This tool will reset the password of the [elastic] user to an autogenerated value.
The password will be printed in the console.
Please confirm that you would like to continue [y/N]y

Password for the [elastic] user successfully reset.
New value: Kzp6I0Jvo8cS9EBRWe24（系统自动生成的密码）

说明：如果想设置自己想用的密码需要加参数-i

[root@goya1 certs]# elasticsearch-reset-password -u elastic -i
warning: ignoring JAVA_HOME=/app/elasticsearch/jdk; using bundled JDK
This tool will reset the password of the [elastic] user.
You will be prompted to enter the password.
Please confirm that you would like to continue [y/N]y
Enter password for [elastic]: 
Re-enter password for [elastic]: 
Password for the [elastic] user successfully reset.