https://about.gitlab.com/installation/#centos-7
依据官网文档搭建：
1. Install and configure the necessary dependencies
On CentOS 7 (and RedHat/Oracle/Scientific Linux 7), the commands below will also open HTTP and SSH access in the system firewall.sudo yum install -y curl policycoreutils-python openssh-server sudo systemctl enable sshd sudo systemctl start sshd sudo firewall-cmd --permanent --add-service=http sudo systemctl reload firewalld
During Postfix installation a configuration screen may appear. Select 'Internet Site' and press enter. Use your server's external DNS for 'mail name' and press enter. If additional screens appear, continue to press enter to accept the defaults.
2. Add the GitLab package repository and install the package
Add the GitLab package repository.
curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.rpm.sh | sudo bash
Next, install the GitLab package. Change `http://gitlab.example.com` to the URL at which you want to access your GitLab instance. Installation will automatically configure and start GitLab at that URL. HTTPS requires additional configuration after installation.
sudo EXTERNAL_URL="http://gitlab.example.com" yum install -y gitlab-ee <button aria-label="Copy to clipboard" class="btn copy-btn js-copy-btn" data-clipboard-text="" sudo="" external_url=""http://gitlab.example.com"" yum="" install="" -y="" gitlab-ee"="" data-placement="top" data-toggle="tooltip" title="" type="button" data-original-title="Copy to clipboard" style="color: rgb(107, 79, 187); font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: 14px; line-height: 1.42857; font-family: inherit; margin: 5px; overflow: visible; cursor: pointer; vertical-align: middle; touch-action: manipulation; background-image: none; border-width: 1px; border-style: solid; border-color: transparent; white-space: nowrap; padding: 5px; border-radius: 4px; user-select: none;">
3. Browse to the hostname and login
On your first visit, you'll be redirected to a password reset screen. Provide the password for the initial administrator account and you will be redirected back to the login screen. Use the default account's username root to login.
See our documentation for detailed instructions on installing and configuration.
4. Set up your communication preferences
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sudo gitlab-ctl start # 启动所有 gitlab 组件；
sudo gitlab-ctl stop # 停止所有 gitlab 组件；
sudo gitlab-ctl restart # 重启所有 gitlab 组件；
sudo gitlab-ctl status # 查看服务状态；
sudo gitlab-ctl reconfigure # 启动服务；
sudo vim /etc/gitlab/gitlab.rb # 修改默认的配置文件；
gitlab-rake gitlab:check SANITIZE=true --trace # 检查gitlab；
sudo gitlab-ctl tail # 查看日志；