# Prerequisite
sudo yum install -y curl policycoreutils-python openssh-server openssh-clients perl 
sudo systemctl enable sshd 
sudo systemctl start sshd 

# Firewall setting
sudo firewall-cmd --permanent --add-service=http 
sudo firewall-cmd --permanent --add-service=https 
sudo systemctl reload firewalld 

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

# Install Gitlab CE and set EXTERNAL_URL(your ip or host,http or https)
sudo EXTERNAL_URL="http://192.168.10.198" yum install -y gitlab-ce