GitLab is an open source repository manager based on Rails developed by GitLab Inc. It is a web based git repository manager that allows your team collaborate on coding, testing and deploying applications. GitLab provides several features, including wikis, issue tracking, code reviews, and activity feeds. GitLab Community Edition is designed to self-hosted and free, but it does not provide technical supports. GitLab supports not only for CentOS but also other operating system as well. 

List of contents

STEP 1. Install packages

There are some components need to be installed, you will need to run below command lines one by one.

sudo yum install -y curl policycoreutils-python openssh-server
sudo systemctl enable sshd
sudo systemctl start sshd
sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-service=https
sudo systemctl reload firewalld
sudo yum install postfix
sudo systemctl enable postfix
sudo systemctl start postfix

STEP 2. Install GitLab

GitLab provides an installer for adding the GitLab CE repository. You can do the necessary things by below command lines.

curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
sudo EXTERNAL_URL="http://127.0.0.1" yum install -y gitlab-ce

Note that you can put your own URL instead of 127.0.0.1 above.

STEP 3. Connect to your GitLab server by web browser

The default user account is root as administrator. You will be able to reset that administrator password.

Reference: https://about.gitlab.com/install/#centos-7?version=ce