1.备份
备份时需要保持gitlab处于正常运行状态，直接执行gitlab-rake gitlab:backup:create进行备份
使用以上命令会在/var/opt/gitlab/backups目录下创建一个名称类似为1530156812_2018_06_28_10.8.4_gitlab_backup.tar的压缩包, 这个压缩包就是Gitlab整个的完整部分, 其中开头的1530156812_2018_06_28_10.8.4是备份创建的日期
/etc/gitlab/gitlab.rb 配置文件须备份
/var/opt/gitlab/nginx/conf nginx配置文件
/etc/postfix/main.cfpostfix 邮件配置备份
1. 1修改备份文件目录
可以通过/etc/gitlab/gitlab.rb配置文件来修改默认存放备份文件的目录
gitlab_rails['backup_path'] = "/var/opt/gitlab/backups"
修改完成之后使用gitlab-ctl reconfigure命令重载配置文件即可
1.2 设置备份过期时间
[root@gitlab ~]# vim /etc/gitlab/gitlab.rb
gitlab_rails['backup_keep_time'] = 604800 #以秒为单位
1.3 gitlab自动备份
创建定时任务
[root@gitlab ~]# crontab -e
0 2 * * * /opt/gitlab/bin/gitlab-rake gitlab:backup:create
2、gitlab迁移
迁移的整体思路是：
1、在新服务器上安装相同版本的gitlab
2、将备份生成的备份文件发送到新服务器的相同目录下 /var/opt/gitlab/backups/
3、gitlab恢复
[root@gitlab ~]# gitlab-ctl stop unicorn #停止相关数据连接服务
[root@gitlab ~]# gitlab-ctl stop sidekiq
[root@gitlab-new ~]# chmod 777 /var/opt/gitlab/backups/1530156812_2018_06_28_10.8.4_gitlab_backup.tar
#修改权限，如果是从本服务器恢复可以不修改
[root@gitlab ~]# gitlab-rake gitlab:backup:restore BACKUP=1530156812_2018_06_28_10.8.4
#从1530156812_2018_06_28_10.8.4编号备份中恢复
按照提示输入两次yes并回车
[root@gitlab ~]# gitlab-ctl start #启动gitlab
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浏览器访问新服务器的地址进行查看，迁移成功
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在实际情况中访问gitlab可能是用域名访问，我们可以修改gitlab配置文件中的url再进行备份，这样就不会影响迁移过程，恢复完成后需要进行的只是修改域名对应的dns解析ip地址
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4、gitlab升级
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[root@gitlab ~]# gitlab-ctl stop #关闭gitlab服务
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[root@gitlab ~]# gitlab-rake gitlab:backup:create #备份
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下载新版gitlab的rpm包安装，安装时选择升级
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安装的过程中可能会出现报错
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Error executing action <code>run</code> on resource 'ruby_block[directory resource: /var/opt/gitlab/git-data/repositories]'
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解决方法为
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[root@gitlab ~]# chmod 2770 /var/opt/gitlab/git-data/repositories
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安装成功后重新加载配置并启动
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[root@gitlab ~]# gitlab-ctl reconfigure
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[root@gitlab ~]# gitlab-ctl restart
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5、gitlab更改默认的nginx
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[root@gitlab ~]# vim /etc/gitlab/gitlab.rb
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nginx['enable'] = false #不启用nginx
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检查默认nginx配置文件，并迁移至新Nginx服务
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/var/opt/gitlab/nginx/conf/nginx.conf #nginx配置文件,包含gitlab-http.conf文件
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/var/opt/gitlab/nginx/conf/gitlab-http.conf #gitlab核心nginx配置文件
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重启 nginx、gitlab服务
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[root@gitlab ~]# gitlab-ctl restart
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[root@gitlab ~]# systemctl restart nginx.service
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访问可能出现报502。原因是nginx用户无法访问gitlab用户的socket文件。 重启gitlab需要重新授权
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[root@gitlab ~]# chmod -R o+x /var/opt/gitlab/gitlab-rails
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