Kill a specific instance of an application
What?
Sometimes it’s clear that a particular instance of your app is having a problem, but it isn’t being identified and culled by the HealthCheck. This is a good way to take it out yourself.
How?
Run watch cf app dora.
In another buffer, restart a specific instance of dora using cf restart-app-instance APP_NAME INSTANCE_INDEX.
Alternatively, you can also kill a specific instance of dora using cf curl /v2/apps/APP_GUID/instances/0 -d '' -X DELETE (reading the cf curl help content and API Docs: Terminate the running app instance at the given index may clarify some things).
Expected Result
You should see the correct instance of your app dying and recovering.
Explanation
You might notice that cf restart-app-instance is way more straightforward. The alternative way of terminating an app instance using cf curl is part of Cloud Controller API v2.