##Check how many dynos are running using the ps command:

heroku ps

##Run bundle command:

heroku run bundle exec <command>

##tail log:

heroku logs --tail

##Change git after you change app name at website:

heroku git:remote -a traffic-wudixiaotie

##Log level:

heroku config:set LOG_LEVEL=DEBUG

##Run console:

heroku run console --app traffic