Jenkins安装目录为 /usr/local/jenkins-tomcat/
    添加文档
    /usr/lib/systemd/system/jenkins.service

    [Unit]
    Description``=``jenkins
    After``=``network.target
    [Service]
    Type``=``forking
    #PIDFile=/usr/local/tomcat/tomcat.pid
    ExecStart``=``/``usr``/``local``/``jenkins``-``tomcat``/``bin``/``startup.sh
    ExecReload``=
    ExecStop``=``/``usr``/``local``/``jenkins``-``tomcat``/``bin``/``shutdown.sh
    PrivateTmp``=``true
    [Install]
    WantedBy``=``multi``-``user.target
    重新导入systemctl
    systemctl daemon-reload
    手动关闭jenkins然后使用systemctl启动并且添加至自启动
    /usr/local/jenkins-tomcat/bin/shutdown.sh
    systemctl start jenkins
    systemctl enable jenkins