Convert Community Edition to Enterprise Edition (FREE SELF)

To convert an existing GitLab Community Edition (CE) server installed using the Omnibus GitLab packages to GitLab Enterprise Edition (EE), you install the EE package on top of CE.

Converting from the same version of CE to EE is not explicitly necessary, and any standard upgrade (for example, CE 12.0 to EE 12.1) should work. However, in the following steps we assume that you are upgrading the same version (for example, CE 12.1 to EE 12.1), which is recommended.

WARNING: When updating to EE from CE, avoid reverting back to CE if you plan on going to EE again in the future. Reverting back to CE can cause database issues that may require Support intervention.

The steps can be summed up to:

Find the currently installed GitLab version:

For Debian/Ubuntu
```
sudo apt-cache policy gitlab-ce | grep Installed
```
The output should be similar to: Installed: 13.0.4-ce.0. In that case, the equivalent Enterprise Edition version will be: 13.0.4-ee.0. Write this value down.

For CentOS/RHEL
```
sudo rpm -q gitlab-ce
```
The output should be similar to: gitlab-ce-13.0.4-ce.0.el8.x86_64. In that case, the equivalent Enterprise Edition version will be: gitlab-ee-13.0.4-ee.0.el8.x86_64. Write this value down.
Add the gitlab-ee Apt or Yum repository:

For Debian/Ubuntu
```
curl --silent "https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.deb.sh" | sudo bash
```
For CentOS/RHEL
```
curl --silent "https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.rpm.sh" | sudo bash
```
The above command will find your OS version and automatically set up the repository. If you are not comfortable installing the repository through a piped script, you can first check its contents.

Next, install the gitlab-ee package. Note that this will automatically uninstall the gitlab-ce package on your GitLab server. reconfigure Omnibus right after the gitlab-ee package is installed. Make sure that you install the exact same GitLab version:

For Debian/Ubuntu

## Make sure the repositories are up-to-date
sudo apt-get update

## Install the package using the version you wrote down from step 1
sudo apt-get install gitlab-ee=13.0.4-ee.0

## Reconfigure GitLab
sudo gitlab-ctl reconfigure

For CentOS/RHEL

## Install the package using the version you wrote down from step 1
sudo yum install gitlab-ee-13.0.4-ee.0.el8.x86_64

## Reconfigure GitLab
sudo gitlab-ctl reconfigure

Now go to the GitLab Admin Area of your server (/admin/subscription) and add your license.
After you confirm that GitLab is working as expected, you may remove the old Community Edition repository:

For Debian/Ubuntu
```
sudo rm /etc/apt/sources.list.d/gitlab_gitlab-ce.list
```
For CentOS/RHEL
```
sudo rm /etc/yum.repos.d/gitlab_gitlab-ce.repo
```

That's it! You can now use GitLab Enterprise Edition! To update to a newer version, follow Update using the official repositories.

NOTE: If you want to use dpkg/rpm instead of apt-get/yum, go through the first step to find the current GitLab version and then follow Update using a manually-downloaded package.