Starting, stopping, and restarting Jenkins on Red Hat Linux

Here are the commands to start, stop, restart, and check the status of the Jenkins service:

1. To start Jenkins, use the following command:

        sudo systemctl start jenkins 

1. Similarly, to stop Jenkins, use the following command:

        sudo systemctl stop jenkins 

1. To restart Jenkins, use the following command:

        sudo systemctl restart jenkins 

1. To check the status of the Jenkins service, use the following systemctl command:

        sudo systemctl status jenkins  

1. You should see the following output:

        ● jenkins.service - LSB: Jenkins Automation Server 
          Loaded: loaded (/etc/rc.d/init.d/jenkins; bad;
          vendor preset: disabled) 
          Active: active (running) since Wed 2017-07-19 18:45:47 EDT;
           2min 31s ago 
             Docs: man:systemd-sysv-generator(8) 
          Process: 1081 ExecStart=/etc/rc.d/init.d/jenkins start
          (code=exited, status=0/SUCCESS) 
           CGroup: /system.slice/jenkins.service 
                   └─1706 /etc/alternatives/java
           -Dcom.sun.akuma.Daemon=daemonized -Djava.awt.headless=true
           -DJENKINS_HOME=/var/lib/j...

In order to troubleshoot Jenkins, access the logs in var/log/jenkins/jenkins.log.

The Jenkins service runs with the user Jenkins, which automatically gets created upon installation.