gitlab.png][1]
一、安装并配置必要的依赖关系
1、安装SSH协议
安装命令：sudo yum install -y curl policycoreutils-python openssh-server
安装成功会出现如下图所示：
2、设置SSH服务开机自启动
配置命令：sudo systemctl enable sshd
3、启动SSH服务
配置命令：sudo systemctl start sshd
4、安装防火墙
配置命令：sudo yum install firwalld systemd -y
5、启动防火墙
配置命令：service firewalld start![image.png]
6、添加HTTP服务到firewalld
配置命令：sudo firewall-cmd --permanent --add-service=http
其中pemmanent表示永久生效，若不加--permanent则系统下次启动后就会失效!
7、重启防火墙
配置命令：sudo systemctl reload firewalld
8、安装Postfix以发送邮件
配置命令：sudo yum install postfix
9、配置Postfix服务开机自启动
配置命令：sudo systemctl enable postfix
10、安装vim编辑器和wget下载器
安装命令：sudo yum install -y vim
安装命令：sudo yum install -y wget
二、添加GitLab镜像源并安装gitlab服务
1、添加gitlab镜像
配置命令：wget https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/gitlab-ce-14.3.2-ce.0.el7.x86_64.rpm
出现如下图所示表示下载完成，接下来就可以安装Gitlab了：
2、安装Gitlab
安装命令：rpm -i gitlab-ce-14.3.2-ce.0.el7.x86_64.rpm
安装过程需要一些时间，等待安装后，安装成功界面如下图所示：
3、修改gitlab配置文件指定服务器IP和自定义端口：
配置命令：vim /etc/gitlab/gitlab.rb
进入gitlab.rb文件后，查找内容（此内容通常在文件31行）external_url 'http://IP:Port'，保存并退出
4、将端口添加到防火墙中
配置命令：firewall-cmd --zone=public --add-port=1000/tcp --permanent
5、重启防火墙
配置命令：sudo systemctl reload firewalld
6、重置gitlab
配置命令：gitlab-ctl reconfigure
重置过程需要一些时间等待，重置成功后，最后几行的信息如下图所示：
7、启动gitlab
启动命令：gitlab-ctl restart
出现如下图所示则表示启动成功：
8、访问GitLab页面
访问方式：IP地址+端口号
8.1 出现502页面，修复方法
方法：清理系统防火墙，重启系统防火墙；将内存扩大（因为gitlab非常吃内存）
8.2 出现422页面，修复方法
方法：先怀疑是邮箱配置里 stmp_domain的配置问题（/etc/gitlab/gitlab.rb文件），注释掉并刷新gitlab配置再重启（gitlab-ctl reconfigure gitlab-ctl restart）后，问题并没有解决
8.3 设置私用Gitlab密码
配置命令：gitlab-rails console -e production（根据版本的需要判断是否要加参数 -e）
查找root用户：user=User.where(id:1).first
修改root密码：user.password='密码'
保存root数据：user.save!
退出设置界面：quit
重启Gitlab：gitlab-ctl restart
再使用gitlab reconfigure命令重置即可登录。
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