How to install GitHub on Centos 7

In this article, I will show you the steps  I did for installing my own Git repository.
Let's start step by step:

Step 1: Install and Configure Required Dependencies

Using yum utility we will guarantee the mandatory dependencies GIT have for a normal use

Enter as root user  to the CentOS 7 linux server

#yum install curl policycoreutils-python openssh-server

you will see

Complete!

[root@demodb ~]# Transaction test succeeded

Now, install Postfix service to send notification emails, and enable it to start at system boot, then check if it's up and running using following commands.

# yum            install postfix
# systemctl    start    postfix
# systemctl    enable postfix
# systemctl    status   postfix

At the end you will see something like this:

[root@demodb ~]# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2019-07-28 11:09:08 COT; 1min 31s ago
 Main PID: 8898 (master)
   CGroup: /system.slice/postfix.service
           ├─8898 /usr/libexec/postfix/master -w
           ├─8899 pickup -l -t unix -u
           └─8900 qmgr -l -t unix -u

Step 2: Add GitLab Repository and Install Package

Now install GitLab package from the YUM repository to your system by running the following script:

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

Until the process finish with

The repository is setup! You can now install packages.
#

Then, install the GitLab Community Edition package using the following command and make sure to change ‘http://gitlab.demodb.com‘ to the URL at which you want to access your GitLab instance from a web browser.
#EXTERNAL_URL="http://gitlab.demodb.com" yum install -y gitlab-ce

This process takes several minutes, depends on your Linux, Internet broadband and CPU's power


     _______ __  __          __
    / ____(_) /_/ /   ____ _/ /_
   / / __/ / __/ /   / __ `/ __ \
  / /_/ / / /_/ /___/ /_/ / /_/ /
  \____/_/\__/_____/\__,_/_.___/


Thank you for installing GitLab!
GitLab should be available at http://192.168.1.101

For a comprehensive list of configuration options please see the Omnibus GitLab readme
https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md

  Verifying  : gitlab-ce-12.1.1-ce.0.el7.x86_64                                                                   1/1

Installed:
  gitlab-ce.x86_64 0:12.1.1-ce.0.el7

Complete!

Note: If you want to change your main URL, you can configure it in the GitLab main configuration file /etc/gitlab/gitlab.rb in the external_url section. Once changed, don’t forget to reconfigure gitlab to apply the recent changes in the configuration file using the following command.

In my case I changed the port number 8080 for 5010, so look for 8080 and change it  for the port number you need, then execute the following command

#gitlab-ctl reconfigure

Check if you have a system firewall enabled because you need to open port 5010  (HTTP) and 5443 (HTTPS) to allow connections in the system firewall.

#firewall-cmd --permanent --add-service=5010/tcp
#firewall-cmd --permanent --add-service=5443/tcp
#systemctl reload firewalld

Step 3: Initial Gitlab Setup

Go to the Internet Browser using the URL you defined previously 

http://localhost:5010 and follow the instructions creating first the admin user, then the project

 and good Luck!