Need to restart Jenkins service programmatically on a schedule - windows

Question

I'd like to be able to set up a scheduled job that restarts Jenkins every night (Windows7). Is there a way to set up a job to run that will do a safeRestart programmatically that I can put in my Windows scheduler?

Answer 1

If the above CLI method did not work (in my case it failed on: hudson.security.AccessDeniedException2: anonymous is missing the Overall/Read permission)
You can create a Groovy plugin build step and "Execute a system Groovy script":
import hudson.model.*;
Hudson.instance.doSafeRestart(null);
or the new Jenkins instance
import jenkins.model.*
Jenkins.instance.doSafeRestart(null);
Then, you can set this job to be triggered by schedule.
For example, to restart Jenkins daily on midnight, set "Build periodically": H 00 * * *

Answer 2

Posting this here for others that come here from Google. You can add a job to Jenkins to restart itself using the CLI. Add a job with a shell step to execute:
java -jar "$JENKINS_HOME/war/WEB-INF/jenkins-cli.jar" -s "$JENKINS_URL" safe-restart

Answer 3

You can use the safe-restart command in the Jenkins CLI.

Answer 4

For Jenkins with LDAP enabled, Direct invocation of safe-restart command didn't work. This JENKINS JIRA helped
Login first
java -jar jenkins-cli.jar -s http://localhost:8080 login --username "$JCLIUSER" --password "$JCLIPASSWD"
Safe Restart after that
java -jar jenkins-cli.jar -s http://localhost:8080 safe-restart --username "$JCLIUSER" --password "$JCLIPASSWD"

Answer 5

Solution: Use Jenkins Resftul API in order to restart your jenkins service, and create some crontab task that performs it on daily basis - (On Linux/Unix/Mac versions)
, The basic flags on jenkins related to restarts are:
--restart (force restart , terminating current session)
--safeRestart (restart after all builds and jobs are completed [Graceful restart])
Example:
The task would be:
curl -x POST -u <user>:<token> <jenkins-ip>/safeRestart
For adding a crontab:
#Go to your scripts directory
cd ~/scripts
# edit new script file
sudo vim restart-jenkins-task.sh
# paste the task above ^ ...
# make the script executable
chmod +x restart-jenkins-task.sh
# add crontab task
sudo crontab -e
# paste the following: run the new script every night at 00:00 (12 am midnight)
0 0 * * * ~/scripts/restart-jenkins-task.sh
Pay Attention:
The best practice to manage global maintenance tasks is generating some automation user that deals with the application and maintenance tasks and giving him proper permissions (only users with administrator privilege can perform restart).
For Generating user access with administrator permissions (Manage Jenkins -> Manage and Assign Roles -> Assign Roles -> create user and toggle administrator permission),
For generating access token for authenticating Jenkins from commandline ( Jenkins -> Go to User -> Add new token)