railsのコマンドが動かない時はspringを(stop|kill)してみよう

突然railsのmigrationコマンドが動かなくなって泣きそうになりました。
にっちもさっちもいかないので、強制停止するとspring関連のエラログが出ています。

$ rails g migration create_publisher_contacts
/Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/run.rb:47:in `gets': Interrupt
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/run.rb:47:in `verify_server_version'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/run.rb:19:in `call'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/command.rb:7:in `call'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/rails.rb:23:in `call'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client/command.rb:7:in `call'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/client.rb:26:in `run'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/bin/spring:48:in `<top (required)>'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/binstub.rb:11:in `load'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/spring-1.1.2/lib/spring/binstub.rb:11:in `<top (required)>'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Users/yokozawa/.rbenv/versions/2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Users/yokozawa/dev/connect/bin/spring:16:in `<top (required)>'
    from bin/rails:3:in `load'
    from bin/rails:3:in `<main>'

とりあえずspringを止めてみましょう。

$ spring stop
Spring is not running

ファッ！！？！

「なんだこれは・・・？」と考えること５分、そうだプロセス見てみよう。

$ ps aux | grep spring
yokozawa        1838   0.0  0.0  2484624   3440 s006  S     2:46PM   0:00.75 spring server | my_app | started 54 mins ago
yokozawa        2682   0.0  0.0  2432772    484 s006  R+    3:41PM   0:00.00 grep spring

なんか居たのでkillする。

$ kill -9 1838
$ ps aux | grep spring
yokozawa        2684   0.0  0.0  2432772    640 s006  S+    3:41PM   0:00.00 grep spring

動いたぜー！

$ rails g migration create_publisher_contacts
      invoke  active_record
      create    db/migrate/20150629064143_create_publisher_contacts.rb