cloud_foundry config

lib_tasks_cf.rake

namespace :cf do
  desc "Only run on the first application instance"
  task :on_first_instance do
    instance_index = JSON.parse(ENV["VCAP_APPLICATION"])["instance_index"] rescue nil
    exit(0) unless instance_index == 0
  end
end

manifest.yml

---
applications:
- name: mob_lobby-staging
  memory: 192M
  instances: 2
  path: .
  command: bundle exec rake cf:on_first_instance db:migrate && rails s -p $PORT
  services:
    - mob_lobby-postgres-staging
  env:
    RAILS_ENV: staging
    RACK_ENV: development

- name: mob_lobby-production
  memory: 256MB
  instances: 4
  path: .
  command: bundle exec rake cf:on_first_instance db:migrate && rails s -p $PORT
  services:
    - mob_lobby-postgres-production
  env:
    RAILS_ENV: production
    RACK_ENV: production

Procfile

web: bundle exec puma -e $RAILS_ENV -p 1234 -S ~/puma -C config/puma.rb

webrick_error.log

2014-12-13T18:26:24.95-0800 [App/1]   ERR [2014-12-14 02:26:24] ERROR NoMethodError: undefined method `split' for nil:NilClass
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:69:in `block in service'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/utils.rb:451:in `block in each'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/utils.rb:450:in `each'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/utils.rb:450:in `each'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:63:in `service'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
2014-12-13T18:26:24.95-0800 [App/1]   ERR 	/home/vcap/app/vendor/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'