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
