How to shutdown an app deployed on Heroku?

Question

To completely 'stop' your app you can scale the web dynos down to zero which effectively takes all your app http-processes offline.

$ heroku ps:scale web=0
Scaling web processes... done, now running 0

http://devcenter.heroku.com/articles/maintenance-mode

If you’re deploying a large migration or need to disable access to your application for some length of time, you can use Heroku’s built in maintenance mode. It will serve a static page to all visitors, while still allowing you to run rake tasks or console commands.

$ heroku maintenance:on
Maintenance mode enabled.

and later

$ heroku maintenance:off
Maintenance mode disabled.

From the Heroku Web

Dashboard => Your App Name => Resources => Pencil icon=> Flip the switch => Confirm

Go to your dashboard on heroku. Select the app. There is a dynos section. Just pull the sliders for the dynos down, (a decrease in dynos is to the left), to the number of dynos you want to be running. The slider goes to 0. Then save your changes. Boom.

According to the comment below: there is a pencil icon that needs to be clicked to accomplish this. I have not checked - but am putting it here in case it helps.

You might have to be more specific and specify the app name as well (this is the name of the app as you have it in heroku). For example:

heroku ps:scale web=0 --app myAppName 

Otherwise you might get the following message:

 % heroku ps:scale web=0
Scaling dynos... failed
 !    No app specified.
 !    Run this command from an app folder or specify which app to use with --app APP.

You can disable the app using enable maintenance mode from the admin panel.

• Go to settings tabs.
• In bottom just before deleting the app. enable maintenance mode. see in the screenshot below.