How can I use unicorn as "rails s"?
ruby, ruby-on-rails, unicorn
Solution
It looks like the `unicorn-rails` gem that @Dogbert mentioned can actually be used to make Unicorn the `rails server` handler.
Simply include `gem "unicorn-rails"` (and for Rails 4.2.4, `gem "rack-handlers"`) in your `Gemfile`, run `bundle install` to install the gem, then you can run:
$ rails server unicorn
Although once `unicorn-rails` is installed, Unicorn should be the default app server so you could also just run `rails server` and it should use Unicorn (assuming you don't also have Thin or Mongrel in your `Gemfile`, in which case they may conflict and you might want to remove the ones you're not using).
Problem
A new Rails project's `Gemfile` shows: ``` # Use unicorn as the app server gem 'unicorn' ``` `rails s --help` shows: ``` Usage: rails server [mongrel, thin, etc] [options] ``` Yet, doing: ``` rails s unicorn ``` I get: ``` /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/rack-1.4.5/lib/rack/handler.rb:63:in `require': cannot load such file -- rack/handler/unicorn (LoadError) from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/rack-1.4.5/lib/rack/handler.rb:63:in `try_require' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/rack-1.4.5/lib/rack/handler.rb:16:in `get' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/rack-1.4.5/lib/rack/server.rb:272:in `server' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/railties-3.2.13/lib/rails/commands/server.rb:59:in `start' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/railties-3.2.13/lib/rails/commands.rb:55:in `block in <top (required)>' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap' from /Users/patrick/.rvm/gems/ruby-1.9.3-head@keynote/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>' from script/rails:6:in `require' from script/rails:6:in `<main>' ``` I've used unicorn in the past on other projects, but always had to run the `unicorn` command and specify a config file which is a bit of a pain. I am wondering how I can just simply make it work by using `rails s...` Is this possible?