How can I change the SSH host displayed in web?

I running GitLab 7.13.3 from the official repository for Ubuntu 14.04.

Then I’d like to change the SSH host as it’s different from the one for web, so I uncommented the line of gitlab_rails['gitlab_ssh_host'] in /etc/gitlab/gitlab.rb to fill my SSH host in.

After that, I ran the following series of command:

sudo gitlab-ctl reconfigure
sudo gitlab-rake cache:clear
sudo gitlab-ctl restart

However, the SSH links displayed in the web were still ssh:// instead of ssh:// as I wanted.
I checked the /var/opt/gitlab/gitlab-rails/etc/gitlab.yml file with finding no mistakes there: the ssh_host setting under gitlab section was correctly set to

Did I do anything wrong? How on earth can I change the host? Please help, thanks.

I figured it out. I’m using an external Apache server so I have to restart it manually.