GitLab Installation and Basic Configuration Guide on CentOS

This article provides a step‑by‑step tutorial for installing and configuring GitLab on a CentOS host.

1. Install required dependencies

yum install curl policycoreutils openssh-server openssh-clients policycoreutils-python

2. Download and install the GitLab package

wget https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/gitlab-ce-12.10.9-ce.0.el7.x86_64.rpm

rpm -ivh gitlab-ce-14.7.7-ce.0.el7.x86_64.rpm

Replace the external URL in /etc/gitlab/gitlab.rb :

sed -i '/^external_url/ s#http.*com#http://192.168.40.24#g' /etc/gitlab/gitlab.rb

Reconfigure and start GitLab:

gitlab-ctl reconfigure

gitlab-ctl start

3. Set the admin password via Rails console

gitlab-rails console -e production

user = User.where(id:1).first

user.password = 'admin1234'

user.password_confirmation = 'admin1234'

user.save

4. Basic GitLab operations

Disable automatic user registration in the admin settings.

Create a new project through the UI (screenshots omitted).

Configure an SSH key for the GitLab user.

Test cloning the repository:

git config --global user.name "hahashen"

git config --global user.email "[email protected]"

cd tian-sir/

touch java.txt

git add java.txt

git commit -m "add java"

git push -u origin master

5. Configure GitLab webhook

(The article includes screenshots showing where to add the webhook URL in the project settings.)

6. Backup management

Add the following to /etc/gitlab/gitlab.rb to define backup location and retention:

gitlab_rails['backup_path'] = '/data/backup/gitlab'

gitlab_rails['backup_keep_time'] = 604800

Create the backup directory and set proper permissions:

mkdir /data/backup/gitlab

chown -R git.git /data/backup/gitlab

Run the backup command:

/usr/bin/gitlab-rake gitlab:backup:create

The article concludes with screenshots of the backup process.