问题
Is it possible to delete POD in kubernetes based on creation time or age?
Example : I would like to delete all PODs which are older than 1 day. These PODs are orphaned , therefore no new PODs will be created.
回答1:
This command will delete all PODs older than one day :
kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' | awk '$2 <= "'$(date -d 'yesterday' -Ins --utc | sed 's/+0000/Z/')'" { print $1 }' | xargs --no-run-if-empty kubectl delete pod
This command will delete all PODs older than 4 hours :
kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' | awk '$2 <= "'$(date -d'now-4 hours' -Ins --utc | sed 's/+0000/Z/')'" { print $1 }' | xargs --no-run-if-empty kubectl delete pod
回答2:
We could this with only awk by doing a regex [0-9]+d directly on the AGE ($5, 5th column) column and then printing the corresponding NAME ($1, first column) column
kubectl delete pod $(kubectl get pod | awk 'match($5,/[0-9]+d/) {print $1}')
Test first to see what's matching:
kubectl get pod | awk 'match($5,/[0-9]+d/) {print $0}'
$0 means all columns
回答3:
You can either add a liveness probe to track how long the pod alive and kill it when it's longer a certain period. Or you can schedule a CronJob
来源：https://stackoverflow.com/questions/48934491/kubernetes-how-to-delete-pods-based-on-age-creation-time