CentOS7 Gitlab Installation Guide

CentOS7 Gitlab Installation Guide

Overview

GitLab is an open source software for Git code hosting and code review based on the Git web interface. It has features like version control, code review, collaboration, etc. and is considered a perfect alternative to GitHub. This article will introduce the process of installing GitLab on CentOS7.

System requirements

• CentOS7 x64 system, memory 2GB or more;
• Install and start Nginx;
• Install and start PostgreSQL;
• Install and start Redis;
• Open TCP ports 22,80,443.

Install necessary packages

In order to install GitLab, you need to install some necessary packages on your system.

sudo yum -y update
sudo yum -y install curl openssh-server openssh-clients postfix cronie wget

Install GitLab

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

GitLab Start

sudo gitlab-ctl reconfigure

After completing the installation process of GitLab, you can use the following command to start GitLab:

sudo gitlab-ctl start

Visit GitLab

By default, GitLab uses port 80 of the HTTP protocol. Because Nginx has been installed during the installation of GitLab, you can access your GitLab instance by accessing the server's IP address or domain name.

http://<your-server-ip></your-server-ip>

First visit to Gitlab

When you access your GitLab instance for the first time, you need to set an administrator password for authentication on the next visit.

When you access a GitLab instance in a browser, you will be automatically directed to the password setting page. Enter your password and click the "Set Password" button. The password must contain at least one lowercase letter, one uppercase letter, one number, and one non-alphabetic character and be at least 8 characters long. As shown in the figure below:

#After setting the password, you will be automatically directed to the login page. Just log in using the password you just set.

Nginx reverse generation

Nginx reverse generation can speed up the running speed of GitLab.

Modify the GitLab configuration file

sudo vim /etc/gitlab/gitlab.rb

Find the following line:

external_url 'http://gitlab.example.com'

Change http://gitlab.example.com to your domain name or IP address. Then write the configuration to GitLab.

sudo gitlab-ctl reconfigure

Configure Nginx

Create a new Nginx configuration file:

sudo touch /etc/nginx/conf.d/gitlab.conf
sudo vim /etc/nginx/conf.d/gitlab.conf

Add the following content:

upstream gitlab-workhorse {
  server 127.0.0.1:8181 fail_timeout=0;
}

server {
  listen 80;

  # Replace with your domain name
  server_name gitlab.example.com;
  server_tokens off; ## Don't show the nginx version number, a security best practice

  location / {
    # Change this to the protocol you prefer/require.
    proxy_pass http://gitlab-workhorse;

    # Enable websocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-Ssl on;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_read_timeout 180;
    proxy_send_timeout 180;
  }
}

Change the gitlab.example.com inside for your Nginx domain name or IP.

Restart Nginx.

sudo systemctl restart nginx.service

Access the GitLab interface.

http://gitlab.example.com

Summary

It is not difficult to build GitLab on CentOS7. Follow the above steps to complete the basic installation in a short time. If you need higher level configuration, you can follow the instructions provided in the official GitLab documentation.

Reference

• [1] GitLab.com
• [2] GitLab Documentation
• [3] How to Install Gitlab, Nginx and SSL on CentOS 7
• [4] How To Install and Configure GitLab on CentOS 7

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