我曾经在我的硬件服务器（Ubuntu 14.04）上有一个始终更新的 GitLab 实例。
但是，我最近决定安装 Discourse（或和 Docker），现在 GitLab 无法正常启动了。
当我运行该服务时，sidekiq 进程启动但独角兽工作人员没有启动：
git@host:~$ bash -x /etc/init.d/gitlab start
+ RAILS_ENV=production
+ app_user=git
+ app_root=/home/git/gitlab
+ pid_path=/home/git/gitlab/tmp/pids
+ socket_path=/home/git/gitlab/tmp/sockets
+ web_server_pid_path=/home/git/gitlab/tmp/pids/unicorn.pid
+ sidekiq_pid_path=/home/git/gitlab/tmp/pids/sidekiq.pid
+ test -f /etc/default/gitlab
+ . /etc/default/gitlab
++ RAILS_ENV=production
++ app_user=git
++ app_root=/home/git/gitlab
++ pid_path=/home/git/gitlab/tmp/pids
++ socket_path=/home/git/gitlab/tmp/sockets
++ web_server_pid_path=/home/git/gitlab/tmp/pids/unicorn.pid
++ sidekiq_pid_path=/home/git/gitlab/tmp/pids/sidekiq.pid
+ '[' git '!=' git ']'
+ cd /home/git/gitlab
+ check_pids
+ mkdir -p /home/git/gitlab/tmp/pids
+ '[' -f /home/git/gitlab/tmp/pids/unicorn.pid ']'
++ cat /home/git/gitlab/tmp/pids/unicorn.pid
+ wpid=8688
+ '[' -f /home/git/gitlab/tmp/pids/sidekiq.pid ']'
++ cat /home/git/gitlab/tmp/pids/sidekiq.pid
+ spid=2923
+ case "$1" in
+ start_gitlab
+ check_stale_pids
+ check_status
+ check_pids
+ mkdir -p /home/git/gitlab/tmp/pids
+ '[' -f /home/git/gitlab/tmp/pids/unicorn.pid ']'
++ cat /home/git/gitlab/tmp/pids/unicorn.pid
+ wpid=8688
+ '[' -f /home/git/gitlab/tmp/pids/sidekiq.pid ']'
++ cat /home/git/gitlab/tmp/pids/sidekiq.pid
+ spid=2923
+ '[' 8688 -ne 0 ']'
+ kill -0 8688
+ web_status=1
+ '[' 2923 -ne 0 ']'
+ kill -0 2923
+ sidekiq_status=0
+ '[' 1 = 0 -a 0 = 0 ']'
+ gitlab_status=3
+ '[' 8688 '!=' 0 -a 1 '!=' 0 ']'
+ echo 'Removing stale Unicorn web server pid. This is most likely caused by the web server crashing the last time it ran.'
Removing stale Unicorn web server pid. This is most likely caused by the web server crashing the last time it ran.
+ rm /home/git/gitlab/tmp/pids/unicorn.pid
+ '[' 2923 '!=' 0 -a 0 '!=' 0 ']'
+ '[' 1 '!=' 0 -a 0 '!=' 0 ']'
+ '[' 1 '!=' 0 ']'
+ echo -n 'Starting GitLab Unicorn'
Starting GitLab Unicorn+ '[' 1 = 0 ']'
+ rm -f /home/git/gitlab/tmp/sockets/gitlab.socket
+ RAILS_ENV=production
+ bin/web start
master failed to start, check stderr log for details
+ '[' 0 = 0 ']'
+ echo 'The Sidekiq job dispatcher is already running with pid 2923, not restarting'
The Sidekiq job dispatcher is already running with pid 2923, not restarting
+ wait_for_pids
+ i=0
+ '[' '!' -f /home/git/gitlab/tmp/pids/unicorn.pid -o '!' -f /home/git/gitlab/tmp/pids/sidekiq.pid ']'
+ echo
+ print_status
+ check_status
+ check_pids
+ mkdir -p /home/git/gitlab/tmp/pids
+ '[' -f /home/git/gitlab/tmp/pids/unicorn.pid ']'
++ cat /home/git/gitlab/tmp/pids/unicorn.pid
+ wpid=9352
+ '[' -f /home/git/gitlab/tmp/pids/sidekiq.pid ']'
++ cat /home/git/gitlab/tmp/pids/sidekiq.pid
+ spid=2923
+ '[' 9352 -ne 0 ']'
+ kill -0 9352
+ web_status=0
+ '[' 2923 -ne 0 ']'
+ kill -0 2923
+ sidekiq_status=0
+ '[' 0 = 0 -a 0 = 0 ']'
+ gitlab_status=0
+ '[' 0 '!=' 0 -a 0 '!=' 0 ']'
+ '[' 0 = 0 ']'
+ echo 'The GitLab Unicorn web server with pid 9352 is running.'
The GitLab Unicorn web server with pid 9352 is running.
+ '[' 0 = 0 ']'
+ echo 'The GitLab Sidekiq job dispatcher with pid 2923 is running.'
The GitLab Sidekiq job dispatcher with pid 2923 is running.
+ '[' 0 = 0 -a 0 = 0 ']'
+ printf 'GitLab and all its components are \033[32mup and running\033[0m.\n'
GitLab and all its components are up and running.
+ exit
git@host:~$
不，Docker 不会尝试绑定 GitLab 使用的端口：
root@host ~ # netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN 3076/redis-server 1
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 2940/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1330/sshd
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 3055/master
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 2940/nginx
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 1391/mysqld
tcp6 0 0 :::2222 :::* LISTEN 30087/docker-proxy
tcp6 0 0 :::8080 :::* LISTEN 30094/docker-proxy
tcp6 0 0 :::80 :::* LISTEN 2940/nginx
tcp6 0 0 :::4949 :::* LISTEN 1168/perl
tcp6 0 0 :::22 :::* LISTEN 1330/sshd
tcp6 0 0 :::25 :::* LISTEN 3055/master
tcp6 0 0 :::1311 :::* LISTEN 2518/dsm_om_connsvc
udp 0 0 0.0.0.0:51367 0.0.0.0:* 1911/openvpn
Nginx 正在运行，但只显示：
“502 - GitLab 没有响应。”
有人可以帮我吗？
提前致谢。