How to Install GitLab on Fedora CoreOS

GitLab is a web-based Git repository manager that provides powerful code management, CI/CD, and many other features. This tutorial will guide you through installing GitLab on the latest version of Fedora CoreOS.

Prerequisites

• A Fedora CoreOS latest version VM or machine.
• Administrative privileges on the machine.
• A domain name or subdomain name that points to your machine's IP address.

Steps

1. Install Docker

GitLab is installed in a Docker container, so you will need to install Docker on your machine. You can install Docker by running the following command:

sudo systemctl enable docker && sudo systemctl start docker

2. Begin GitLab Installation

First, you'll need to create a docker-compose.yml file. Run the following command to create and open the file in your preferred text editor:

sudo touch docker-compose.yml && sudo nano docker-compose.yml

Then, paste in the following contents into the file:

version: '3'
services:
  web:
    image: 'gitlab/gitlab-ce:latest'
    ports:
      - '80:80'
      - '443:443'
      - '22:22'
    volumes:
      - '/srv/gitlab/config:/etc/gitlab'
      - '/srv/gitlab/logs:/var/log/gitlab'
      - '/srv/gitlab/data:/var/opt/gitlab'
    restart: always

The above docker-compose.yml file specifies using the latest version of the GitLab Docker image, and binds ports 80, 443, and 22 of your machine to the corresponding ports of the GitLab container. It also creates three volumes to store GitLab's configuration, logs, and data, which will persist between container restarts.

3. Customize GitLab Installation

Next, edit the /srv/gitlab/config/gitlab.rb file to customize your GitLab installation. You can make changes using the nano editor:

sudo nano /srv/gitlab/config/gitlab.rb

Some common customizations include:

• Setting a custom hostname for your GitLab instance: external_url 'https://gitlab.example.com'
• Configuring an email server to send notifications: notification_email 'notifications@example.com'
• Enabling incoming email: gitlab_rails['incoming_email_enabled'] = true

If you want to make any other customizations to your GitLab instance, visit GitLab's official documentation for instructions on how to make changes to the gitlab.rb configuration file.

4. Start GitLab

Once you've customized your GitLab installation, start it using the following command:

sudo docker-compose up -d

This command runs GitLab in detached mode, meaning it will continue to run even if you close your terminal window.

5. Access GitLab

When GitLab is running, you can access it in your web browser using your domain name or subdomain name that points to your machine's IP address. For example, if your domain name is gitlab.example.com, navigate to https://gitlab.example.com in your web browser.

Conclusion

Congratulations! You've successfully installed GitLab on Fedora CoreOS. You can now use GitLab to manage your code, create CI/CD pipelines, and much more.

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