设置使用账号密码

1.需要在配置文件中开启x-pack验证, 修改config目录下面的elasticsearch.yml文件，在里面添加如下内容,并重启.

http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-headers: Authorization

xpack.security.enabled: true
xpack.license.self_generated.type: basic
xpack.security.transport.ssl.enabled: true

2，执行设置用户名和密码的命令,这里需要为4个用户分别设置密码，elastic, kibana, logstash_system,beats_system

# windows环境
elasticsearch-setup-passwords.bat interactive

# docker中
docker exec -it es /bin/bash

./bin/elasticsearch-setup-passwords interactive

设置完记得重启es

会出现如下的内容：

Initiating the setup of passwords for reserved users elastic,kibana,logstash_system,beats_system.
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]: 
passwords must be at least [6] characters long
Try again.
Enter password for [elastic]: 
Reenter password for [elastic]: 
Passwords do not match.
Try again.
Enter password for [elastic]: 
Reenter password for [elastic]: 
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]: 
Changed password for user [kibana]
Changed password for user [logstash_system]
Changed password for user [beats_system]
Changed password for user [elastic]

登录的账户如下：elastic, kibana, logstash_system,beats_system

3、修改密码命令如下

curl -H “Content-Type:application/json” -XPOST -u elastic ‘http://127.0.0.1:9200/_xpack/security/user/elastic/_password' -d ‘{ “password” : “123456” }’