How to restart Jenkins manually?
To restart Jenkins manually, you can use either of the following commands (by entering their URL in a browser):
(jenkins_url)/safeRestart - Allows all running jobs to complete. New jobs will remain in the queue to run after the restart is complete.
(jenkins_url)/restart - Forces a restart without waiting for builds to complete.
On Ubuntu or Debian, when installed through apt-get/dpkg:
$ sudo /etc/init.d/jenkins restartUsage: /etc/init.d/jenkins {start|stop|status|restart|force-reload}