GitLab 安装
具体安装步骤如下：
一、安装和配置必要的依赖
If you install Postfix to send email please select ‘Internet Site’ during setup. Instead of using Postfix you can also use Sendmail or configure a custom SMTP server and configure it as an SMTP server.
On CentOS, the commands below will also open HTTP and SSH access in the system firewall.
sudo yum install -y curl policycoreutils openssh-server openssh-clients libsemanage-static libsemanage-devel
sudo systemctl enable sshd
sudo systemctl start sshd
sudo yum install -y postfix
sudo systemctl enable postfix
sudo systemctl start postfix
sudo firewall-cmd --permanent --add-service=http
sudo systemctl reload firewalld二、下载 GitLab 安装包，并安装
curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sud
o bash
sudo yum install -y gitlab-ce三、配置并启动 GitLab
sudo gitlab-ctl reconfigure四、浏览 GitLab 网站
第一次访问网站的时候，需要修改密码。默认的用户是 root。登录成功后，自行创建其他用户，或者创建
仓库。
参考资料：
更多详细内容，欢迎学习 GitHub 开源之旅第十一季：Git 服务器搭建 在线课程。
