Detailed explanation of how to build a gitlab production environment

1. Introduction

In today's software development industry, Git as a version control tool has become an indispensable part. GitLab provides more functions and services based on Git. GitLab can help us better code management, collaboration and deployment.

This article will introduce how to build a GitLab production environment and help the development team better use GitLab for code management. This article will be based on the Ubuntu 18.04 LTS version and explain in detail the installation, configuration and operation of GitLab.

2. Install GitLab

1. Install the necessary dependencies

The installation of GitLab on Ubuntu 18.04 LTS requires many dependencies. Before starting, make sure you have EPEL and related dependencies installed. Enter the following command to install:

sudo apt-get update
sudo apt-get install -y curl openssh-server ca-certificates postfix

2. Install GitLab package

Before installing GitLab, you need to add the official GitLab software package. To do this, run the following command:

curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.deb.sh | sudo bash

This command will download the script and install GitLab’s packages.

3. Install GitLab

After downloading and installing the package, you need to install GitLab. Run the following command:

sudo EXTERNAL_URL="http://gitlab.example.com" apt-get install gitlab-ee

Please note that "http://gitlab.example.com" must be replaced here with the URL of your own GitLab server.

4. Start GitLab

After the installation is complete, you can use the following command to start GitLab:

sudo gitlab-ctl reconfigure

When you run this command, GitLab will automatically start and configure. You can check the status of GitLab using the following command:

sudo gitlab-ctl status

If all components are started, OK will be output.

3. Configure GitLab

1. Configure basic settings

After installation, open the browser and enter the URL of GitLab. When logging in for the first time, you need to set an administrator password and email address.

2. Configure SSL certificate

In order to protect your server, it is recommended to use an SSL certificate for access. SSL can be obtained for free with a free Let’s Encrypt certificate. Before that, you need to install certbot:

sudo apt-get install -y certbot

After the installation is complete, obtain and configure the certificate through the following command:

sudo certbot --nginx -d gitlab.example.com

After the operation is completed, you need to restart Nginx:

sudo systemctl restart nginx

3. Disable registration

By default, anyone can access GitLab and register a new account. In a production environment, it is recommended to disable this feature for security reasons. To disable registration, edit the configuration file:

sudo vi /etc/gitlab/gitlab.rb

Find the following line in the file:

# gitlab_rails['gitlab_sign_up_enabled'] = true

Change it to:

gitlab_rails['gitlab_sign_up_enabled'] = false

Then restart GitLab:

sudo gitlab-ctl reconfigure

4. Summary

This article provides a method for building a GitLab production environment. We learned how to install and configure GitLab, and set up basic parameters to ensure our code repository is safe and secure. In a production environment, it's important to keep your system reliable and secure, so it's important to understand these steps and adjust them for your specific situation. Thank you for reading, I hope you can successfully set up your own GitLab production environment, and I wish you good luck in your work!

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