A job creates one or more pods and ensures that a specified number of them successfully terminate. As pods successfully complete, the job tracks the successful completions. When a specified number of successful completions is reached, the job itself is complete. Deleting a Job will cleanup the pods it created.
Save the below manifest as ‘job-whalesay.yaml’ using your favorite editor.
apiVersion: batch/v1
kind: Job
metadata:
name: whalesay
spec:
template:
spec:
containers:
- name: whalesay
image: docker/whalesay
command: ["cowsay", "This is a Kubernetes Job!"]
restartPolicy: Never
backoffLimit: 4
Run a sample Kubernetes Job using the whalesay image.
kubectl apply -f job-whalesay.yaml
Wait until the job has completed successfully.
kubectl get job/whalesay
NAME DESIRED SUCCESSFUL AGE
whalesay 1 1 2m
Confirm the output.
kubectl logs -l job-name=whalesay
___________________________
< This is a Kubernetes Job! >
---------------------------
\
\
\
## .
## ## ## ==
## ## ## ## ===
/""""""""""""""""___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\______/