How to install gitlab on centos6.5

CentOS 6.5 is a very stable operating system, and some older servers and applications are still using it. GitLab is a great choice for teams and businesses that need to set up code management and collaboration. In this article, we will detail how to install GitLab on CentOS 6.5.

1. Determine the system version and hardware requirements

Before installation, we need to check the system version and hardware requirements.

• The CentOS version officially supported by GitLab is 6.x or 7.x.
• The recommended minimum number of CPU cores is 2 and 4GB of memory.

Now, we are ready to start installing GitLab.

2. Installing dependent libraries

First, we need to install some necessary dependent libraries so that GitLab can run on CentOS. Open a terminal and execute the following command:

sudo yum -y update
sudo yum -y install curl policycoreutils openssh-server openssh-clients
sudo yum -y install postfix

Postfix is ​​a mail server. GitLab requires a mail server to send email notifications, so we have to install it.

When installing postfix, you will be prompted to enter the host name and domain name. We can just press Enter and continue using the default settings.

3. Installing GitLab

The easiest way to install GitLab on CentOS is to use the Omnibus package. Omnibus is a ready-made solution that includes GitLab and all the required dependencies. Using the Omnibus package, we can quickly install and configure GitLab.

Download the Omnibus package from the GitLab official website. If you are using CentOS 6.5, you can choose to download the GitLab 7.11.4 version. In the terminal, go to the download directory and execute the following command:

sudo rpm -i gitlab-ce-7.11.4-ce.0.el6.x86_64.rpm

The above command will install GitLab. Installation may take several minutes depending on your hardware configuration and network speed.

4. Configuring GitLab

After the installation is complete, open a browser and access the server’s IP address or domain name. You should be able to see the GitLab login page. You need to set up the administrator account information.

After completing the setup, you will be redirected to GitLab's main page. Here you can create projects, users, groups, etc.

5. Configuring the firewall

To ensure the security of the server, we need to open some ports in the firewall. GitLab uses the following three ports by default:

• HTTP: 80
• HTTPS: 443
• SSH: 22

In order to open these port, we need to update the firewall rules. Execute the following command:

sudo iptables -I INPUT 1 -p tcp --dport 80 -j ACCEPT
sudo iptables -I INPUT 1 -p tcp --dport 443 -j ACCEPT
sudo iptables -I INPUT 1 -p tcp --dport 22 -j ACCEPT
sudo /etc/init.d/iptables save
sudo service iptables restart

The above command will allow external access to HTTP, HTTPS and SSH.

We have completed the installation and configuration of GitLab. If you are managing a team or working collaboratively, GitLab is a very useful tool.

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