How to test deletionGracePeriodSeconds in pod templates with K8S
I assume you are asking about terminationGracePeriodSeconds, please correct me if I'm mistaken and I'll edit accrodingly.
The terminationGracePeriodSeconds is the time between Kubernetes sends the SIGTERM signal to the pod main process (PID 1) until it sends the SIGKILL signal, which abruptly kills the process (and subsequently, the pod itself).
SIGTERM signal is meant to be interpreted by the process, and it should start a "Graceful Shutdown" - stop receiving new tasks and finish the work on existing ones. If the process in your pod needs more than 30 seconds for this procedure (let's say you're running a worker which process each task in 2 minutes), you'd want to extend the terminationGracePeriodSeconds accordingly.
So you can't make the pod "reject" the deletion, but your process can either ignore the SIGTERM signal, and then after the period configured in terminationGracePeriodSeconds it'll be killed abruptly, or it may be that your process needs more time to gracefully shutdown (and in that case, you'd want to increase `