docker搭建gitlab服务器搭建502错误处理

gitlab服务器一直502

问题：

502 Whoops, GitLab is taking too much time to respond.

解决方案：

## 进入容器
docker exec -it gitlab /bin/bash

## 查看状态
cd /usr/bin
gitlab-ctl status
>>>>>>
run: gitaly: (pid 466) 1041s; run: log: (pid 465) 1041s
run: gitlab-monitor: (pid 484) 1041s; run: log: (pid 481) 1041s
run: gitlab-workhorse: (pid 470) 1041s; run: log: (pid 469) 1041s
run: logrotate: (pid 478) 1041s; run: log: (pid 477) 1041s
run: nginx: (pid 474) 1041s; run: log: (pid 471) 1041s
run: node-exporter: (pid 464) 1041s; run: log: (pid 463) 1041s
run: postgres-exporter: (pid 476) 1041s; run: log: (pid 475) 1041s
run: postgresql: (pid 483) 1041s; run: log: (pid 480) 1041s
run: prometheus: (pid 473) 1041s; run: log: (pid 472) 1041s
run: redis: (pid 482) 1041s; run: log: (pid 479) 1041s
run: redis-exporter: (pid 468) 1041s; run: log: (pid 467) 1041s
run: sidekiq: (pid 462) 1041s; run: log: (pid 461) 1041s
run: sshd: (pid 20) 1092s; run: log: (pid 19) 1092s
run: unicorn: (pid 17333) 0s; run: log: (pid 493) 1041s ## 这个运行为0秒，并且每次的pid都在增加，说明服务没有启动起来
>>>>>>

## 查看日志
gitlab-ctl tail unicorn
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
==> /var/log/gitlab/unicorn/unicorn_stderr.log <==
ArgumentError: Already running on PID:557 (or pid=/opt/gitlab/var/unicorn/unicorn.pid is stale)
  /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:195:in `pid='
  /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:127:in `start'
  /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/unicorn-5.1.0/bin/unicorn:126:in `<top (required)>'
  /opt/gitlab/embedded/bin/unicorn:23:in `load'
  /opt/gitlab/embedded/bin/unicorn:23:in `<top (required)>'
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

## 删除进程
rm -rf /opt/gitlab/var/unicorn/unicorn.pid

## 重启容器
docker restart gitlab