Let's talk about how to build a GitLab server offline on CentOS7

Git is an open source distributed version control system used to manage source code modifications. GitLab is an open source Web platform based on Git. It provides a Web interface so that development teams can easily conduct code collaboration, version management, and release operations. This article will introduce how to build a GitLab server offline on the CentOS7 operating system.

1. Environment preparation

1. System requirements

• CentOS7
• Machine with independent IP address
• At least 4GB Memory, CPU2 core

2. Download the offline installation package

Due to unstable network signal or the network is blocked, in many cases it is not possible to directly download the GitLab installation package online. Therefore, we need to download the offline installation package in advance and save it locally for later use.

You can log in to the GitLab official website (https://about.gitlab.com/install/) to download the installation package and find the "Offline installation packages" option.

Here we select the CentOS7 offline installation package to download. After the download is completed, save it to a local directory for later use.

2. Install and configure GitLab server

1. Install dependencies

Use the following command to install the dependency packages required by GitLab:

sudo yum install -y curl policycoreutils-python openssh-server wget

2. Install Postfix

GitLab requires the Postfix mail server as a tool to send notification emails. Run the following command to install:

sudo yum install postfix

During the installation process, select Internet Site and use the default settings; enter your server name (for example: example.com) in the host name, and save it after completion.

3. Install GitLab

• Enter the directory where the GitLab installation package was previously stored, and execute the following command to decompress the installation package:

sudo rpm -i gitlab-x.x.x_xxx.rpm

Among them, x.x.x_xxx means The downloaded GitLab version number uses the same version number as the actual one.

• After decompression is completed, execute the following command to configure GitLab:

sudo gitlab-ctl reconfigure

This will automatically install all components of GitLab, including Redis, PostgreSQL, Nginx, etc.

Note: It may take several minutes to complete this command, depending on your processor speed, hard disk read and write speed, and memory size.

4. Access GitLab

After the installation process is completed, you can access the GitLab web interface. Enter your server's IP and port number in the browser (the default is 80), visit the GitLab homepage, and create and set the administrator user and password.

3. Problem Solving

During the offline installation of GitLab, some problems may cause the installation to be unsuccessful. The following are methods to solve these problems:

1. Failed to download the dependency package

If the download of the dependency package fails, you can download the relevant dependency package to the local through the following command:

sudo yum install --downloadonly --downloaddir=<path> <package></package></path>

This will download the dependency package to the path.

2. Failure to start GitLab

In some cases, failure to start GitLab may be caused by an incorrect PID file for PgSQL. In this case, you can manually delete the PID file and restart GitLab:

sudo rm -f /var/opt/gitlab/postgresql/data/postmaster.pid

sudo gitlab-ctl restart

3. Failed to access GitLab

If you cannot access GitLab after entering the server IP and port number in the browser Home page, possibly due to firewall. In this case, you can open port 80 through the following command:

sudo firewall-cmd --add-service=http --permanent
sudo firewall-cmd --reload

IV. Summary

This article mainly introduces how to set up a GitLab server offline in CentOS7. There are many commands and steps that need to be executed. . Through the method provided in this article, you can easily complete the offline installation of GitLab, allowing your team to better collaborate and manage code.

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