I redeployed my application with helm upgrade, e.g.
helm upgrade myapp helm/myapp --install --namespace=myapp --set image=myapp:latestThen with
kubectl get podsI can see new pods get started and old pods get terminated. I wonder once the old pods are terminated, and gone from kubectl get pods, can I still find their pod names somehow?
Nowadays $ kubectl get pods -a is deprecated, and as a result you cannot get deleted pods.
However you can get a list of recently deleted pod names - up to 1 hour in the past unless you changed the ttl for kubernetes events - by executing command:
$ kubectl get event -o custom-columns=NAME:.metadata.name | cut -d "." -f1
Take a look: deleted-pods.
For future consider auditing. Kubernetes auditing gives a security chronological set of records documenting the sequence of activities that have affected system by administrators, users or other components of the system.