安装gitlab社区版

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安装环境
系统版本：CentOS Linux release 7.9.2009 (Core)

1. 配置yum源

vim /etc/yum.repos.d/gitlab-ce.repo

[gitlab-ce]
name=gitlab-ce
baseurl=http://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el6
Repo_gpgcheck=0
Enabled=1
Gpgkey=https://packages.gitlab.com/gpg.key

2. 更新本地yum缓存

sudo yum makecache

3. 安装Gitlab社区版

sudo yum install gitlab-ce        #自动安装最新版
sudo yum install gitlab-ce-x.x.x    #安装指定版本

注意：
如果无法安装，提示：The GPG keys listed for the “gitlab-ce” repository are already installed but they are not correct for this package.Check that the correct key URLs are configured for this repository.

4. 修改 /etc/yum.repos.d/gitlab-ce.repo 后再次安装

[gitlab-ce]
name=gitlab-ce
baseurl=http://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el6
Repo_gpgcheck=0
Enabled=1
gpgcheck=0

5. 安装完成后启动服务

sudo gitlab-ctl reconfigure

注意
参考：https://www.cnblogs.com/springwind2006/p/6872773.html
如果在安装过程中卡住
1、按住CTRL+C强制结束；
2、运行：sudo systemctl restart gitlab-runsvdir；
3、再次执行：sudo gitlab-ctl reconfigure

6. GitLab常用命令

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；

扩展：

如果是CentOS release 6.x (Final)
CentOS-Base.repo使用阿里云的yum源

[root@Centos6 yum.repos.d]# cat CentOS-Base.repo 
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the 
# remarked out baseurl= line instead.
#
#[base]
name=CentOS-6.10 - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6#released updates 
[updates]
name=CentOS-6.10 - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6#additional packages that may be useful
[extras]
name=CentOS-6.10 - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.10 - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6#contrib - packages by Centos Users
[contrib]
name=CentOS-6.10 - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6