heroku ps -a myapp まずはプロセスを確認 $ heroku ps -a myapp === web (Standard-1X): bundle exec puma -C config/puma.rb (1) web.1: up 2017/03/06 00:00:00 +0900 (~ 10h ago) === worker (Standard-1X): bundle exec sidekiq -C config/sidekiq.yml …