How to restart Jenkins manually?

Question

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I've just started working with Jenkins and have run into a problem. After installing several plugins it said it needs to be restarted and went into a "shutting down" mode, but never restarts.

How do I do a manual restart?

Answer 1

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.

Answer 2

If you installed as a rpm or deb, then service jenkins restart will work also.

Answer 3

On Ubuntu or Debian, when installed through apt-get/dpkg:

$ sudo /etc/init.d/jenkins restart
Usage: /etc/init.d/jenkins {start|stop|status|restart|force-reload}

Answer 4

The SafeRestart Plugin needs to be mentioned. It is pretty useful (Restart Safely). It adds a link to be able to restart from the main menu:

Answer 5

The below commands worked for me in Red Hat Linux and should work for Ubuntu also.

• To know the status of Jenkins:

  sudo service jenkins status
  

• To start the Jenkins:

  sudo service jenkins start
  

• To stop the Jenkins:

  sudo service jenkins stop
  

• To restart the Jenkins:

  sudo service jenkins restart
  

Demo on command prompt:

[root@varunHome]# sudo service jenkins status
jenkins (pid  7468) is running...

[root@varunHome]# sudo service jenkins stop
Shutting down Jenkins               [  OK  ]

[root@varunHome]# sudo service jenkins start
Starting Jenkins                    [  OK  ]

[root@varunHome]# sudo service jenkins restart
Shutting down Jenkins               [  OK  ]

Starting Jenkins                    [  OK  ]
[root@varunHome]#

The folks who are using windows

Open Console/Command line --> Go to your Jenkins installation directory. Execute the following commands respectively:

To stop:
jenkins.exe stop

To start:
jenkins.exe start

To restart:
jenkins.exe restart

Answer 6

On Windows, if you installed it as a service, go to Services (Start → Run: services.msc), find Jenkins, right click → Restart.

If it does not help (UI is not responding) open the Windows Task Manager → Processes, kill the java.exe process, and restart the service once again.

Answer 7

If you're running Jenkins on Mac OS X then you can manually stop the service by executing this command:

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

Answer 8

This can also be done using the Jenkins CLI:

java -jar jenkins-cli.jar -s http://[jenkins-server]/ restart

The jenkins-cli.jar file along with a full list of commands are available at http://[jenkins-server]/cli.

Answer 9

If you want to just reload the configuration file, one can do

    <jenkins_url>/reload

This is quicker if you have made some small change in the configuration file, like config.xml directly in the file system or made copies of the job through the filesystem (not through the browser).

Answer 10

It depends on how Jenkins has been started.

• As a service: sudo service jenkins restart, sudo /etc/init.d/jenkins restart, etc.

• As a web application in a Tomcat installation: restart your Tomcat, or just restart the application in Tomcat. Go to http://<tomcat-server>:8080/manager/list or after authentication hit http://<tomcat-server>:8080/manager/stop?path=/myapp+ http://<tomcat-server>:8080/manager/start?path=/myapp.

• Launched with just java -jar: kill it (kill -9 <pid>), and relaunch it.

• Launched with java -jar, but from a supervisor: supervisorctl restart jenkins

Answer 11

On Windows

Go to the Jenkins installation, open the cmd and run:

• To stop:

   jenkins.exe stop
  

• To start:

   jenkins.exe start
  

• To restart:

   jenkins.exe restart
  

Answer 12

Use the command line interface:

java -jar jenkins-cli.jar -s http://jenkins.example.com:8080/ -i /root/.ssh/id_rsa safe-restart

Answer 13

Sometimes there will be some stale Jenkins processes, so ps -ef | grep jenkins kill all of them. Restart as described in previous answers, and it will be clean.

ps -ef | grep jenkins
sudo kill -kill <pid>

Answer 14

You have many options to restart Jenkins manually, but mainly two (URL or command line):

• Alternative 1: Using the Jenkins installation URL:

  Jenkins_URL/restart.

  Example: http://jenkinsserver.com/restart

  This type of restart forces a restart without waiting for builds to complete.

  If you need to wait for the jobs endings you can use:

  Jenkins_URL/safeRestart.

  Example: http://jenkinsserver.com/safeRestart

• Alternative 2: Using the command line, depending on your Jenkins installation.

  • If you're installing using rpm or deb package or you have the Jenkins installation in Red Hat, Ubuntu, or Debian, you can use these commands:

  • sudo service jenkins restart

    This restart Jenkins in one step.

  • sudo service jenkins stop and sudo service jenkins start,

    This restart Jenkins in two steeps.

    Note: if you need to check the Jenkins status, you can use this command: sudo service jenkins status

  • If you are using CentOS, you can use this command:

    sudo systemctl restart jenkins
    

    Note: if you need to check the Jenkins status, you can use this command: sudo systemctl status Jenkins

Answer 15

If you run FreeBSD:

/usr/local/etc/rc.d/jenkins restart

Answer 16

If you are able to access it in a web browser, just add /restart, for example, localhost:8080/restart.

If you are running it as a service then log in to your server and execute the command:

sudo service jenkins stop/start

Answer 17

For Mac

Stop Jenkins

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

Start Jenkins

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

Answer 18

For restarting Jenkins manually using the browser:

Enter your www.jenkins-ip/restart (for example, http://localhost:8080/restart) in the browser. Jenkins will restart and load the login page automatically after restart.

Answer 19

JenkinURL/restart will do the restart.

---

/usr/local/etc/rc.d/jenkins restart

Answer 20

From the terminal:

sudo service jenkins restart

Or jenkinsurl/restart.

Answer 21

Several people have mentioned the need to restart the servlet container if Jenkins is not running as a standalone. But Tomcat (or what is being used) doesn't need to be restarted. Tomcat can force a restart of the Jenkins context if your Jenkins restart is hung.

But to address another comment, when you put Jenkins in the "shutting down" mode it will not actually shut down. It stops new jobs from executing and place a giant red banner on the system pages so everyone knows that the administrator wants to take it down eventually. There are plugins to trigger a servlet container restart for that context after all builds are completed.

The alternative is to wait till the last running job completes, then manually kick over Jenkins from the container (or via the command line options that others have mentioned for the standalone Jenkins install).

Answer 22

If it is deployed as a war file then restart the application server, for example, Tomcat.

Answer 23

For CentOS:

sudo systemctl restart jenkins

sudo systemctl status Jenkins

Jenkins will be active and up and running on some PID.

Answer 24

If it is in a Docker container, you can just restart your container. Let's assume the container name is jenkins, so you can do:

docker restart jenkins

Or

docker stop jenkins
docker start jenkins

Answer 25

Browse http://[jenkins-server-url]/updateCenter/ and just check 'restart jenkins'

Answer 26

Windows

Run services.msc and restart:

Answer 27

Try the below. It worked for me.

sudo service jenkins status  

It will give you PID of Jenkins. Now do a

kill -15 [PID]

sudo service jenkins start

Answer 28

If you have no permissions or access to the command line directly, you can do e.g. one of the following:

1. Create a job with shell/batch step that will trigger a restart from the Jenkins installation folder
2. Install/update some plugin while checking "restart after installation" (at least this works in old versions)

Both above are hacks, but I actively used them in a very restricted environment where no one wanted me to restart Jenkins, huh.

Answer 29

If you are running Jenkins as a server on a Windows machine, then open Task Manager and switch to the service tab. Search for Jenkins and restart it.

Answer 30

If nothing works then find the Jenkins process by

ps aux | grep java

and then kill it:

kill -9 [PID]

sudo service jenkins start

Edit : Look for the java process which is related to jenkins