I add Gem 'unicorn' to Gemfile and call rails server unicorn -e production, but I get a load error. Then I add Gem 'unicorn_rails', then call rails server unicorn -e production, but I can't find the socket file. So I am considering if it doesn't use the config/unicorn.rb file as the configuration? So I call unicorn_rails -c config/unicorn.rb -E production -D, but I get another error text file busy.
So now I am stuck in this matter, could you help me? :)
It should be something looks like:
bundle exec unicorn -E production -c config/unicorn.rb
and you should only need unicorn gem
bundle exec unicorn -p $PORT -c ./config/unicorn.rb
works for me
I put it in the Procfile and then use Foreman to start it off by entering
foreman start
web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
service unicorn_projectName start
works for me
来源：https://stackoverflow.com/questions/17409910/how-to-start-rails-server-in-production-mode-using-unicorn-and-config-file