rkt gc

rkt has a built-in garbage collection command that is designed to be run periodically from a timer or cron job. Stopped pods are moved to the garbage and cleaned up during a subsequent garbage collection pass. Each gc pass removes any pods remaining in the garbage past the grace period. Read more about the pod lifecycle.

# rkt gc --grace-period=30m0s
Moving pod "21b1cb32-c156-4d26-82ae-eda1ab60f595" to garbage
Moving pod "5dd42e9c-7413-49a9-9113-c2a8327d08ab" to garbage
Moving pod "f07a4070-79a9-4db0-ae65-a090c9c393a3" to garbage

On the next pass, the pods are removed:

# rkt gc --grace-period=30m0s
Garbage collecting pod "21b1cb32-c156-4d26-82ae-eda1ab60f595"
Garbage collecting pod "5dd42e9c-7413-49a9-9113-c2a8327d08ab"
Garbage collecting pod "f07a4070-79a9-4db0-ae65-a090c9c393a3"