Configure Jenkins CSP for Ubuntu Service

I upgraded to v2.2 of Jenkins on my server and I want to relax the new Content Security Policy configuration. I can successfully run

System.setProperty("hudson.model.DirectoryBrowserSupport.CSP", "")

which temporarily sets the value and make the HTML output display properly. However when I restart Jenkins the value needs to be changed again. The web page says to run

java -Dhudson.model.DirectoryBrowserSupport.CSP= -jar jenkins.war

however the only file is located at /usr/share/jenkins/jenkins.war and when I run the command on that file it tries to setup a new Jenkins instance.

Is there a different file or way to run this command for an Ubuntu service?

2 Answers

To run Jenkins every time you restart the server with the option to relax the content security policy, run it as a service with the options you require.

1. Download jenkins.war file to any convenient destination, eg. /home/jenkins_user
2. Create service file /etc/systemd/system/jenkins.service specifying the relaxed security policy
3. Reload service manager: systemctl daemon-reload
4. That's it! Now manage the service

Full instructions including examples are given here Installing Jenkins as a Linux Daemon

I ended up modifying /etc/default/jenkins. There should be a line that sets a JAVA_ARGS variable. I copied -Dhudson.model.DirectoryBrowserSupport.CSP= a described on the jenkins website into that variable.