foreman start error (server.rb:33, missing argument...)

Question

After trying to start foreman, I get this error (note that it does seem to work on heroku though so I guess this is a strictly local problem):

hrn039:textthechange jon$ foreman start
02:20:00 web.1     | started with pid 7363
02:20:01 web.1     | /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:33:in `parse!': missing argument: -e (OptionParser::MissingArgument)
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:280:in `parse_options'
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:180:in `options'
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:54:in `set_environment'
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands/server.rb:42:in `initialize'
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `new'
02:20:01 web.1     |    from /Users/jon/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `<top (required)>'
02:20:01 web.1     |    from script/rails:6:in `require'
02:20:01 web.1     |    from script/rails:6:in `<main>'
02:20:01 web.1     | process terminated
02:20:01 system    | sending SIGTERM to all processes

The Procfile only has one line as specified by heroku

web: bundle exec rails server thin -p $PORT -e $RACK_ENV

And my gemfile has

gem 'thin'

Google isn't being very helpful with this error.

Thanks!

Answer 1

This is not about executing on Heroku - see that the original question about is about executing with Foreman - which is local execution.

You can replicate your error by executing the following:

rails server thin -e

That's effectively what Foreman is running, given your Procfile:

web: bundle exec rails server thin -p $PORT -e $RACK_ENV

So I'm going to guess that you're not passing in an argument to -e. ie. you haven't defined RACK_ENV locally.

What you can do is create a .env file in your local directory, something like

RACK_ENV=development

PORT=3000

Foreman will automatically pick up the local .env file and set the environment appropriately, before creating the process based on your process type declaration.