初めてゴムを使用して AWS EC2 にデプロイしようとしています。テスト用に、現在 t1.micro を使用しています。
tcap rubb:create_staging の後に rubb.yml を編集すると、rubber で奇妙なエラーが発生します。
これはメッセージです：
/Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:1:in `expand_string': undefined method `known_roles' for nil:NilClass (NoMethodError)
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:168:in `eval'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:168:in `expand_string'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:180:in `expand'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:146:in `[]'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/environment.rb:230:in `method_missing'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/rubber-2.5.5/lib/rubber/recipes/rubber/utils.rb:22:in `block (2 levels) in load'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:138:in `instance_eval'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:138:in `invoke_task_directly'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/configuration/callbacks.rb:25:in `invoke_task_directly_with_callbacks'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:89:in `execute_task'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:101:in `find_and_execute_task'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:46:in `block in execute_requested_actions'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:45:in `each'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:45:in `execute_requested_actions'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/help.rb:19:in `execute_requested_actions_with_help'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:34:in `execute!'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:14:in `execute'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/gems/capistrano-2.15.5/bin/cap:4:in `<top (required)>'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/bin/cap:23:in `load'
from /Users/mgreschke/Dropbox/medisupply/vendor/bundle/bin/cap:23:in `<main>'
どこでエラーを探すべきか考えていますか? それは私には単純な問題のように思えますが、どこを見ればいいのか本当にわかりません..
ベスト、M