安裝方法
1、下載war包安裝（推薦）
2、使用rmp安裝
安裝完后路徑：
/usr/lib/jenkins/jenkins.war WAR包
/etc/sysconfig/jenkins 配置文件，“端口”，“JENKINS_HOME”等都可以在這里配置。
/var/lib/jenkins/ 默認的JENKINS_HOME目錄
/var/log/jenkins/jenkins.log Jenkins日志文件
安裝完后啟動服務
service jenkins start|stop|restart
啟動時報錯
錯誤1：
Restarting jenkins (via systemctl): Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.
解決辦法：vi /etc/sysconfig/jenkins 修改JENKINS_USER="jenkins" 修改為JENKINS_USER="root"
或者將jenkins加入到root權限
錯誤2：
Starting jenkins (via systemctl): Warning: jenkins.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.
解決辦法：vi /etc/rc.d/init.d/jenkins 增加java路徑（路徑查看：which java）
```shell
sudo usermod -a -G root jenkins
錯誤3：自動安裝完成之后：
通過瀏覽器打開Jenkins安裝插件時，報錯：無法連接到Jenkins服務器
Authentication required
<!--
You are authenticated as: anonymous
Groups that you are in:
Permission you need to have (but didn't): hudson.model.Hudson.Administer
-->
解決辦法：
將Jenkins用戶添加到根組： sudo usermod -a -G root jenkins
制作Jenkins通過編輯文件 / etc / sysconfig / jenkins 並更改 JENKINS_LISTEN_ADDRESS =0.0.0.0