GitLab configuration guide for Debian system

Configuring GitLab under Debian system involves several steps, including installing the necessary dependencies, downloading and installing GitLab packages, configuring GitLab, and starting services. Here is a detailed configuration guide:

1. Preparation

1. Update the system package :

 sudo apt-get update
sudo apt-get upgrade

2. Install dependencies :

 sudo apt-get install -y curl openssh-server ca-certificates tzdata perl

2. Install GitLab

1. Add the official GitLab repository :

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

2. Install GitLab CE :

 sudo apt-get install gitlab-ce

During the installation process, the system will prompt you to set the administrator password and set an external URL (such as http://your_server_ip). Please follow the prompts.

3. Configure GitLab

1. Configure the external URL : Edit the /etc/gitlab/gitlab.rb file, locate external_url 'http://your_server_ip' and make sure it is set correctly. For example:

 external_url 'http://192.168.1.100'

2. Reconfigure and restart GitLab :

 sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart

4. Visit GitLab

Enter the configured GitLab URL (such as http://192.168.1.100) in the browser and log in with the administrator account and password.

V. Other configurations (optional)

1. Configure the SMTP server (if email function is required): Edit the /etc/gitlab/gitlab.rb file and set up the SMTP server related information:

 gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "smtp.163.com"
gitlab_rails['smtp_port'] = 25
gitlab_rails['smtp_user_name'] = "xxuser@163.com"
gitlab_rails['smtp_password'] = "xxpassword"
gitlab_rails['smtp_domain'] = "163.com"
gitlab_rails['smtp_authentication'] = :login
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['gitlab_email_from'] = "xxuser@163.com"
user["git_user_email"] = "xxuser@163.com"

Then reconfigure and restart GitLab:

 sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart

2. Configure HTTPS (optional): For environments with high security requirements, you can configure GitLab to use HTTPS. You need to get a valid SSL certificate and configure it into GitLab. Edit the /etc/gitlab/gitlab.rb file, set the ssl_certificate and ssl_certificate_key parameters to the paths of the SSL certificate and private key files, and then reconfigure and restart GitLab.

3. Set firewall rules : Allow HTTP and HTTPS access:

 sudo ufw allows 80
sudo ufw allows 443
sudo ufw reload

After completing the above steps, you should be able to access GitLab through your browser and start using it for code management and collaboration. The first access may require setting an administrator password.

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