1、CentOS上，以下命令也将在系统防火墙中打开HTTP和SSH访问。

sudo yum install curl policycoreutils openssh-server openssh-clients -ysudo systemctl enable sshdsudo systemctl start sshdsudo yum install postfixsudo systemctl enable postfixsudo systemctl start postfixsudo firewall-cmd --permanent --add-service=httpsudo systemctl reload firewalld

2、在 https://packages.gitlab.com/gitlab/gitlab-ce/packages/el/7/找到需要的版本 下载  使用rpm安装

curl -LJO https://packages.gitlab.com/gitlab/gitlab-ce/packages/el/7/gitlab-ce-XXX.rpm/downloadrpm -i gitlab-ce-XXX.rpm

3、配置并启动GitLab

sudo gitlab-ctl reconfigure 修改root账号密码方法 官方修改密码：()  root用户下执行 gitlab-rails console production

[root@svr34 bin]# gitlab-rails console productionLoading production environment (Rails 4.2.5.2)irb(main):001:0> user = User.where(id: 1).first=> #
     
       user.password=12345678=> 12345678irb(main):003:0> user.password_confirmation=12345678=> 12345678irb(main):004:0> user.save!=> trueirb(main):005:0> quit