How to verify a cronjob successfully completed in Kubernetes - kubernetes

Question

I am trying to create a cronjob that runs the command date in a single busybox container. The command should run every minute and must complete within 17 seconds or be terminated by Kubernetes. The cronjob name and container name should both be hello.
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: hello
spec:
jobTemplate:
metadata:
name: hello
spec:
completions: 1
activeDeadlineSeconds: 17
template:
metadata:
creationTimestamp: null
spec:
containers:
- image: busybox
name: hello
command: ["/bin/sh","-c","date"]
resources: {}
restartPolicy: OnFailure
schedule: '*/1 * * * *'
status: {}
I want to verify that the job executed successfully at least once.
I tried it using the command k get cronjob -w which gives me this result.
Is there another way to verify that the job executes successfully? Is it a good way to add a command date to the container?

Answer 1

CronJob internally creates Job which internally creates Pod. Watch for the job that gets created by the CronJob
kubectl get jobs --watch
The output is similar to this:
NAME COMPLETIONS DURATION AGE
hello-4111706356 0/1 0s
hello-4111706356 0/1 0s 0s
hello-4111706356 1/1 5s 5s
And you can see the number of COMPLETIONS
#Replace "hello-4111706356" with the job name in your system
pods=$(kubectl get pods --selector=job-name=hello-4111706356 --output=jsonpath={.items[*].metadata.name})
Check the pod logs
kubectl logs $pods

Answer 2

you can check the logs of the pods created by the cronjob resource. Have a look at this question and let me know if this solves your query.

Answer 3

You can directly check the status of the jobs. Cronjob is just controlling a Kubernetes job.
Run kubectl get jobs and it will give you the completion status.
> kubectl get jobs
NAME COMPLETIONS DURATION AGE
datee-job 0/1 of 3 24m 24m