1. Install and configure the necessary dependencies

Download GitLab Community Edition (CE) | GitLab

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 curl policycoreutils openssh-server openssh-clients
sudo systemctl enable sshd
sudo systemctl start sshd
sudo yum install postfix
sudo systemctl enable postfix
sudo systemctl start postfix
sudo firewall-cmd --permanent --add-service=http
sudo systemctl reload firewalld

2. Add the GitLab package server and install the package

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

If you are not comfortable installing the repository through a piped script, you can find the entire script here and select and download the package manually and install using

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

手动下载rpm包，根据上面的地址和版本地址如下，如果下载慢可以用国外VPS下载再复制回来。

https://packages.gitlab.com/gitlab/gitlab-ce/packages/el/7/gitlab-ce-9.1.4-ce.0.el7.x86_64.rpm/download

3. Configure and start GitLab

sudo gitlab-ctl reconfigure

4. Browse to the hostname and login

On your first visit, you’ll be redirected to a password reset screen to provide the password for the initial administrator account. Enter your desired password and you’ll be redirected back to the login screen.
The default account’s username is root. Provide the password you created earlier and login. After login you can change the username if you wish.

For configuration and troubleshooting options please see the Omnibus GitLab documentation

If you are located in China, try using https://mirror.tuna.tsinghua.edu.cn/help/gitlab-ce/

5. Gitlab uninstall

 # 删除gitlab
[root@localhost ~]# gitlab-ctl uninstall
[root@localhost ~]# rpm -e gitlab-ce

# 重装需要删除如下目录
[root@localhost ~]# find / -name gitlab
[root@localhost ~]# find / -name gitlab|xargs rm -rf

# ruby_block[supervise_redis_sleep] action run卡住
[root@localhost ~]# systemctl restart gitlab-runsvdir
# 再次执行
[root@localhost ~]# gitlab-ctl reconfigure