gitlab 打开页面出现502错误解决办法

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????????#?重新配置更新
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；

解决思路：

1.?首先确认部署gitlab机器硬件是否满足条件：cpu:2核和内存:8g （最低性能要求），如果不满足，该问题只能通过更换机器解决。

2.?检查gitlab是否是使用8080端口，且8080端口是否被抢占使用(大部分都是改原因导致)

修改gitlab的默认端口

>>>?vim??/etc/gitlab/gitlab.rb

#?大概在240行左右
unicorn['listen']?=?'127.0.0.1'
unicorn['port']?=?8181

#?每次重新配置，都需要执行sudo?gitlab-ctl?reconfigure?
>>>?sudo?gitlab-ctl?reconfigure

3. 检查gitlab的状态，查看nginx日志，查看进程状态，在做判断。

使用gitlab-ctl status命令查看gitlab的状态

>>>?gitlab-ctl?status
run:?logrotate:?(pid?21402)?86s;?run:?log:?(pid?1209)?3957915s
run:?nginx:?(pid?21457)?85s;?run:?log:?(pid?1207)?3957915s
run:?postgresql:?(pid?22444)?44s;?run:?log:?(pid?1201)?3957915s
run:?redis:?(pid?21790)?73s;?run:?log:?(pid?1200)?3957915s
run:?sidekiq:?(pid?22443)?44s;?run:?log:?(pid?1205)?3957915s
run:?unicorn:?(pid?1096)?55171s,?got?TERM;?run:?log:?(pid?1202)?3957915s

查看gitlab的错误日志记录

>>>?cd?/var/log/gitlab/nginx/
>>>?cat?cat?gitlab_error.log

2018/08/07?03:12:32?[error]?27179#0:?*56?upstream?prematurely?closed?connection?while?reading?response?header?from?upstream,?client:?192.168.3.240,?server:?192.168.3.99,?request:?"GET?/?HTTP/1.1",?upstream:?"http://unix:/var/opt/gitlab/gitlab-rails/sockets/gitlab.socket:/",?host:?"192.168.3.99:12345"
2018/08/07?03:17:52?[error]?21461#0:?*1?connect()?to?unix:/var/opt/gitlab/gitlab-rails/sockets/gitlab.socket?failed?(111:?Connection?refused)?while?connecting?to?upstream,?client:?192.168.3.221,?host:?"192.168.3.99:12345"
2018/08/07?03:21:37?[error]?21462#0:?*3?connect()?to?unix:/var/opt/gitlab/gitlab-rails/sockets/gitlab.socket?failed?(111:?Connection?refused)?while?connecting?to?upstream,?host:?"192.168.3.99:12345"

使用命令：gitlab-ctl tail?用来获取详细信息

>>>?gitlab-ctl?tail?


==>?/var/log/gitlab/postgresql/current?<==
2019-12-24_10:30:01.87878?FATAL:??could?not?write?lock?file?"postmaster.pid":?No?space?left?on?device

==>?/var/log/gitlab/unicorn/current?<==
2019-12-24_10:30:02.15926?master?failed?to?start,?check?stderr?log?for?details

==>?/var/log/gitlab/postgresql/current?<==
2019-12-24_10:30:02.90281?FATAL:??could?not?write?lock?file?"postmaster.pid":?No?space?left?on?devic

比如这里提示错误：could not write lock file "postmaster.pid": No space left on device，告诉我们由于电脑硬盘没有空余存储空间来存储postmaster.pid文件，导致启动失败。

参考文章：
https://stackoverflow.com/questions/50598018/gitlab-502-error-and-unicorn-always-restart

（编辑：李大同）

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