1.注册免费许可
进入该链接，进行注册
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2.注册之后到邮箱里面点击提示下载的链接
To download your license, please go to:
--> http://license.elastic.co/************
3.到指定页面根据我们使用的版本进行下载即可
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4.使用以下命令指定该文件
文件重命名为，licese.json ,和命令执行在同一个path下
curl -H "Content-Type: application/json" -XPUT -u yourname:"yourpassword" 'http://172.18.0.135:9288/_xpack/license?acknowledge=true' -d @licese.json
执行后出现以下字样
{"acknowledged":true,"license_status":"valid"}
然后重启es集群，启动kibana
若是出现es插件异常，或者禁止登陆功能不要慌，可能是es还没有启动成功。
若是过一段时间还是不可以，我们可以使用以下命令重新设置密码。
deploy@es-cluster1:~$ ./elasticsearch-6.2.4/bin/x-pack/setup-passwords interactive
Initiating the setup of passwords for reserved users elastic,kibana,logstash_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]:
Reenter password for [elastic]:
Enter password for [kibana]:
Reenter password for [kibana]:
Enter password for [logstash_system]:
Reenter password for [logstash_system]:
若是搭建的集群，只在其中一台上面更新，重启整个集群即可。
尊重原创，转载请注明出处：https://www.jianshu.com/p/3623b4626267
