How to install and use gitlab on Ubuntu system

1. Preface

Speaking of Git, many programmers know it. GitLab is an open source platform based on Git that aims to provide teams with a series of services such as code hosting, version management, automated testing, and CI/CD. This article will introduce how to install GitLab on an Ubuntu system and perform basic use.

2. Install GitLab

1. Installing dependencies

Before installing GitLab, you need to install some dependencies. Enter the following command in the terminal:

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

2. Add GitLab GPG key

Edit/etc/apt/sources.list.d/gitlab-ce. list file and write the following:

deb https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/ubuntu bionic main

Save and exit the file, then enter the following command:

curl https://packages.gitlab.com/gpg.key | sudo apt-key add -

This command will add the GitLab GPG key.

3. Install GitLab CE

Enter the following command to install GitLab:

sudo apt update
sudo apt install -y gitlab-ce

After the installation is complete, enter the following command to start GitLab:

sudo gitlab-ctl reconfigure

During the whole process, you need to wait for a while. Once reconfigure is complete, GitLab will start. Access the server IP address or domain name in the browser: http://SERVER_IP_OR_DOMAIN. At this time, you will see the GitLab welcome page, indicating that the installation has been successful.

3. Using GitLab

After the above steps, GitLab has been successfully installed. The following will briefly introduce how to use GitLab basicly.

1. Create a new project

First, create a new project in GitLab. After logging in to GitLab, click "New Project" in the left menu bar to enter the "New Project" page. On this page, fill in the project name, project description, and click the "Create Project" button.

2. Clone project

Clone project refers to copying the code in the remote Git repository to the local development machine. In GitLab, there are two ways to clone a project:

• HTTP/HTTPS method, which can be used to pull the code through https, for example:

git clone https://gitlab.com/<USER>/<PROJECT>.git

• SSH method. To use this method, you need to generate an SSH key in GitLab, and then add the SSH key to the local machine. For example:

git clone git@gitlab.com:<USER>/<PROJECT>.git

3. Create a branch

In GitLab, you can create multiple branches so that developers can better collaborate on development. In GitLab, you can create a new branch and push code to it. On the project page, click the "Branch" button, then enter the name and description of the branch to be created, and finally click the "Create Branch" button.

4. Submit code

During development, you need to submit the code after each modification. In GitLab, you can use the following command to submit code to the remote repository:

git add .
git commit -m "commit message"
git push origin master

The above command will push the code to the master branch of the remote Git repository.

5. Create a Merge Request

In GitLab, you can create a Merge Request for code review and merging. On the project page, click the "Merge Request" button, then enter the splash request name and description, and finally click the "Submit Merge Request" button.

6. CD/CI

GitLab also provides automation functions such as CD/CI. Users can create Pipelines in GitLab to perform continuous integration and continuous deployment of projects.

4. Summary

This article introduces how to install GitLab on the Ubuntu system and briefly introduces the basic use of GitLab. Of course, in practical applications, GitLab has many functions. Readers can explore more features of GitLab based on actual needs.

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