How to start unicorn?

Question

Nginx

Have a great day comrades. I recently deployed gitlab on Ubuntu server 14 following this instruction: popel-studio.com/blog/article/sobstvenniy-hosting-...
After a few days of successful work, when requesting an address, it throws out "503 GitLab is not responding."
I started an investigation, I find out that Unicorn does not start

[email protected]:/home/git/gitlab$ sudo service gitlab status
● gitlab.service - LSB: GitLab git repository management
   Loaded: loaded (/etc/init.d/gitlab)
   Active: active (exited) since Пт. 2015-07-31 17:18:24 MSK; 22min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2744 ExecStop=/etc/init.d/gitlab stop (code=exited, status=0/SUCCESS)
  Process: 2789 ExecStart=/etc/init.d/gitlab start (code=exited, status=0/SUCCESS)

июля 31 17:18:21 gitlab systemd[1]: Starting LSB: GitLab git repository management...
июля 31 17:18:21 gitlab su[2792]: Successful su for git by root
июля 31 17:18:21 gitlab su[2792]: + ??? root:git
июля 31 17:18:21 gitlab su[2792]: pam_unix(su:session): session opened for user git by (uid=0)
июля 31 17:18:24 gitlab gitlab[2789]: Starting both the GitLab Unicorn and Sidekiqmaster failed to start, check stderr log for details
июля 31 17:18:24 gitlab gitlab[2789]: The GitLab Unicorn web server is not running.
июля 31 17:18:24 gitlab gitlab[2789]: The GitLab Sidekiq job dispatcher with pid 2827 is running.
июля 31 17:18:24 gitlab systemd[1]: Started LSB: GitLab git repository management.

Did a restart, didn't help.
Gemfile says:

# Application server
 group :unicorn do
  gem "unicorn", '~> 4.6.3'
  gem 'unicorn-worker-killer'
end

It seems all the rules.
I don't understand what is the problem, please help

Answer 1

Do not follow that instruction :)
Install them as a package
https://about.gitlab.com/downloads/
It will be easier to live.