It's useful to make a backup just in case things go south: (With MySQL, this may require granting "LOCK TABLES" privileges to the GitLab user on the database version)
The gitlab-shell config changed recently, so check for config file changes and make `/home/git/gitlab-shell/config.yml` the same as <https://github.com/gitlabhq/gitlab-shell/blob/master/config.yml.example>
## 4. Install libs, migrations, etc.
```bash
cd /home/git/gitlab
# MySQL
sudo -u git -H bundle install --without development test postgres --deployment
# PostgreSQL
sudo -u git -H bundle install --without development test mysql --deployment
- Make `/home/git/gitlab/config/gitlab.yml` same as https://gitlab.com/gitlab-org/gitlab-ce/blob/6-3-stable/config/gitlab.yml.example but with your settings.
- Make `/home/git/gitlab/config/unicorn.rb` same as https://gitlab.com/gitlab-org/gitlab-ce/blob/6-3-stable/config/unicorn.rb.example but with your settings.