After changing the port number in 8080 to 9999 and it not changing in jenkins. And it showing the default port number 8080 only.

I restart the jenkins service with this command also

"service jenkins restart" "systemctl jenkins restart"

but its not works, I worked on "Ubuntu 20.04.4 LTS" server

port for HTTP connector (default 8080; disable with -1)

HTTP_PORT=9999

--httpPort=8080

CodePudding user response：

Please refer to this link: https://askubuntu.com/a/1401952/1586251 I answered the same question.

TLDR;

Refer to the documentations in: https://www.jenkins.io/doc/book/installing/linux/#debianubuntu

It says that you can modify by: systemctl edit jenkins

Then add the following lines:

[Service] Environment="JENKINS_PORT=9999"

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