How to delete completed kubernetes pod?

Question

I have a bunch of pods in kubernetes which are completed (successfully or unsuccessfully) and I'd like to clean up the output of kubectl get pods. Here's what I see when I run kubectl get pods:

NAME                                           READY   STATUS             RESTARTS   AGE intent-insights-aws-org-73-ingest-391c9384     0/1     ImagePullBackOff   0          8d intent-postgres-f6dfcddcc-5qwl7                1/1     Running            0          23h redis-scheduler-dev-master-0                   1/1     Running            0          10h redis-scheduler-dev-metrics-85b45bbcc7-ch24g   1/1     Running            0          6d redis-scheduler-dev-slave-74c7cbb557-dmvfg     1/1     Running            0          10h redis-scheduler-dev-slave-74c7cbb557-jhqwx     1/1     Running            0          5d scheduler-5f48b845b6-d5p4s                     2/2     Running            0          36m snapshot-169-5af87b54                          0/1     Completed          0          20m snapshot-169-8705f77c                          0/1     Completed          0          1h snapshot-169-be6f4774                          0/1     Completed          0          1h snapshot-169-ce9a8946                          0/1     Completed          0          1h snapshot-169-d3099b06                          0/1     ImagePullBackOff   0          24m snapshot-204-50714c88                          0/1     Completed          0          21m snapshot-204-7c86df5a                          0/1     Completed          0          1h snapshot-204-87f35e36                          0/1     ImagePullBackOff   0          26m snapshot-204-b3a4c292                          0/1     Completed          0          1h snapshot-204-c3d90db6                          0/1     Completed          0          1h snapshot-245-3c9a7226                          0/1     ImagePullBackOff   0          28m snapshot-245-45a907a0                          0/1     Completed          0          21m snapshot-245-71911b06                          0/1     Completed          0          1h snapshot-245-a8f5dd5e                          0/1     Completed          0          1h snapshot-245-b9132236                          0/1     Completed          0          1h snapshot-76-1e515338                           0/1     Completed          0          22m snapshot-76-4a7d9a30                           0/1     Completed          0          1h snapshot-76-9e168c9e                           0/1     Completed          0          1h snapshot-76-ae510372                           0/1     Completed          0          1h snapshot-76-f166eb18                           0/1     ImagePullBackOff   0          30m train-169-65f88cec                             0/1     Error              0          20m train-169-9c92f72a                             0/1     Error              0          1h train-169-c935fc84                             0/1     Error              0          1h train-169-d9593f80                             0/1     Error              0          1h train-204-70729e42                             0/1     Error              0          20m train-204-9203be3e                             0/1     Error              0          1h train-204-d3f2337c                             0/1     Error              0          1h train-204-e41a3e88                             0/1     Error              0          1h train-245-7b65d1f2                             0/1     Error              0          19m train-245-a7510d5a                             0/1     Error              0          1h train-245-debf763e                             0/1     Error              0          1h train-245-eec1908e                             0/1     Error              0          1h train-76-86381784                              0/1     Completed          0          19m train-76-b1fdc202                              0/1     Error              0          1h train-76-e972af06                              0/1     Error              0          1h train-76-f993c8d8                              0/1     Completed          0          1h webserver-7fc9c69f4d-mnrjj                     2/2     Running            0          36m worker-6997bf76bd-kvjx4                        2/2     Running            0          25m worker-6997bf76bd-prxbg                        2/2     Running            0          36m 

and I'd like to get rid of the pods like train-204-d3f2337c. How can I do that?

Answer 1

You can do this a bit easier, now.

You can list all completed pods by:

kubectl get pod --field-selector=status.phase==Succeeded 

And delete all completed pods by:

kubectl delete pod --field-selector=status.phase==Succeeded 

Answer 2

If this pods created by CronJob, you can use spec.failedJobsHistoryLimit and spec.successfulJobsHistoryLimit

Example:

apiVersion: batch/v1beta1 kind: CronJob metadata:   name: my-cron-job spec:   schedule: "*/10 * * * *"   failedJobsHistoryLimit: 1   successfulJobsHistoryLimit: 3   jobTemplate:     spec:       template:          ...