Changed Jenkins port doesn't applied

I have Ubuntu 20.04 and Jenkins 1.3.3 I need to change the local Jenkins port from 8080 to 8888.

I tried to change the config file sudo gedit /etc/default/jenkins in the string

#port for HTTP connector (default 8080; disable with -1)
HTTP_PORT=8888

After restart service: sudo service jenkins start it doesn't affect changes. I still visit jenkins with 8080 port.

Also in this config file I add additional string: JENKINS_ARGS="--httpPort=$HTTP_PORT" but unfortunately after restart service the same - 8080.

I tried to change the address via web interface in the Manage Jenkins next Configure System next change string Jenkins URL to and apply and restart service. I visited page and have got next features:

java -jar jenkins-cli.jar -s -webSocket who-am-i
Reports your credential and permissions.

So changes are saved but doesn't affect. I tried to restart my PC to initial all changes. Can You help me? Any suggestions?

1 Answer

Refer to the documentations in:

It says that you can modify by:

systemctl edit jenkins

Then add the following lines:

[Service] Environment="JENKINS_PORT=8888"

Port should be your desired port to use. Save it and then restart jenkins:

sudo systemctl restart jenkins