To restart Jenkins we have various way. Few are with url and few with the help of plugin. Let see all possible ways to restart jenkins.

1. Using url

<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.

Example

http://localhost:8080/safeRestart
http://localhost:8080/restart

2. Using Plugin

The SafeRestart Plugin  allows you to restart Jenkins safely: it’s waiting that all builds in progress finished before launching restart.

3. Jenkin Service

For Linux base OS:

• To know the status
  • sudo service jenkins status
• To start
  • sudo service jenkins start
• To stop
  • sudo service jenkins stop
• To restart
  • sudo service jenkins restart

For CentOS:

• To stop
  • sudo systemctl stop Jenkins
• To start
  • sudo systemctl start Jenkins
• To restart
  • sudo systemctl restart Jenkins

For Window:

• To stop
  • jenkins.exe stop
• To start
  • jenkins.exe start
• To restart
  • jenkins.exe restart

For MacOS:

• To stop
  • sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist

• To restart
  • sudo launchctl load /Library/LaunchDaemons/org.jenkins-ci.plist

4. Using CLI

java -jar jenkins-cli.jar -s <jenkin_url> restart

5. For Window If service installed

Run services.msc or Open Task manager go to service tab and search Jenkins Service  and restart: