Take you step by step to install GitLab on CentOS

With the continuous evolution of modern software development processes, version control systems have become an essential tool for every development team. GitLab, as a complete open source Git management system, has become the first choice of many companies and organizations, making team collaboration more efficient and faster. This article will take you step by step to install GitLab and configure it on the CentOS 7 operating system.

Preparation

Before starting to install GitLab, we need to ensure the following preparations:

1. CentOS 7 operating system
2. Install and Configure the PostgreSQL or MySQL database
3. Install and configure the mail server (if necessary)

After ensuring that these preparations are completed, we can start installing GitLab.

Step 1: Install dependencies

We need to install some dependencies before we can successfully install GitLab. Install the required dependencies using the following command:

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

Step 2: Install GitLab

To install GitLab on CentOS, we can use the Omnibus package. To install the Omnibus package, use the following command:

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

The above command will install GitLab CE through GitLab Repositories.

Step 3: Configure and start GitLab

After the installation is complete, we need to configure and start GitLab. First, you need to edit the following file:

sudo vi /etc/gitlab/gitlab.rb

You need to configure GitLab according to your own needs. Here we only introduce some basic configuration, you can change it according to your needs.

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

...
...

postgresql['enable'] = false
mysql['enable'] = true
mysql['client_encoding'] = 'utf8mb4'
mysql['utf8mb4'] = true

...
...

gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "smtp.gmail.com"
gitlab_rails['smtp_port'] = 587
gitlab_rails['smtp_user_name'] = "gitlab@example.com"
gitlab_rails['smtp_password'] = "smtp_password"
gitlab_rails['smtp_domain'] = "example.com"
gitlab_rails['smtp_authentication'] = "login"
gitlab_rails['smtp_enable_starttls_auto'] = true

After you complete the configuration, please use the following command to restart the GitLab service:

sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart

Step 4: Access GitLab in the browser

Now you can Visit GitLab. Type the IP address or domain name of the server you installed into your browser, followed by '/' and 'users/sign_in' to log in to GitLab.

http://<server-ip>/users/sign_in

Now you can log in using the predefined default administrator account admin@example.com and start using GitLab. However, to ensure security, create a new administrator account if necessary and delete the default administrator account.

Summary

In this article, we introduced the steps to install GitLab on CentOS 7. We installed the dependencies, installed GitLab CE using the Omnibus package, and then configured and started GitLab. Now you can use GitLab to manage your projects and work together.

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