Changing the default port for GitLab
So I was having a little bit of trouble with a GitLab server that I was setting up.
As I already have applications using Apache, I found that using port 80 for Apache and GitLab was just not going to work due to the GitLab using Nginx. I decided to set GitLab to be on another port, 1st I tried to change this in the config file at /opt/gitlab/embedded/conf/nginx.conf but found that this did not work, the solution was actually very simple, I just needed to add the port to the external url in the gitlab.rb file and reconfigure.
Stop GitLab if it’s not stoped already
edit gitlab.rb config file
change external_url so it has the port number you want to use on the end
Start GitLab if it’s not started already
Hope this help you make the changes to your GitLab ports