Kubernetes/Jobs,CronJob - Revision history

Pio2pio at 21:01, 13 September 2019

2019-09-13T21:01:49Z

← Older revision		Revision as of 23:01, 13 September 2019
Line 8:		Line 8:


	Self terminating one time off Jobs		Self terminating <code>jobs-selfTerminate.yml</code> one time off Jobs. Includes a CronJob task, that's manage a pod with RBAC permissions to remove old jobs.
	<source lang=yaml>		<source lang=yaml>
	---		---
Line 62:		Line 62:
	restartPolicy: Never		restartPolicy: Never
	serviceAccountName: delete-jobs		serviceAccountName: delete-jobs

	---		---
	apiVersion: v1		apiVersion: v1
Line 106:		Line 105:
	When applied to minikube 1.15.2		When applied to minikube 1.15.2
	<source lang=bash>		<source lang=bash>
	kubectl.exe apply -f ~~jobs/~~jobs-~~selfterminate~~.yml		kubectl.exe apply -f jobs-selfTerminate.yml
	job.batch/job-ttl-zero created		job.batch/job-ttl-zero created
	job.batch/job-activedeadlinedeconds created		job.batch/job-activedeadlinedeconds created

Pio2pio at 23:52, 11 September 2019

2019-09-11T23:52:51Z

← Older revision		Revision as of 01:52, 12 September 2019
Line 106:		Line 106:
	When applied to minikube 1.15.2		When applied to minikube 1.15.2
	<source lang=bash>		<source lang=bash>
			kubectl.exe apply -f jobs/jobs-selfterminate.yml
			job.batch/job-ttl-zero created
			job.batch/job-activedeadlinedeconds created
			cronjob.batch/cron-delete-jobs created
			serviceaccount/delete-jobs created
			clusterrolebinding.rbac.authorization.k8s.io/delete-jobs created
			clusterrole.rbac.authorization.k8s.io/delete-jobs created

	NAME COMPLETIONS DURATION AGE		NAME COMPLETIONS DURATION AGE
	job.batch/cron-delete-jobs-1568245320 1/1 8s 2m1s		job.batch/cron-delete-jobs-1568245320 1/1 8s 2m1s

Pio2pio: Created page with "Experiments with jobs. CLI # Delete completed jobs kubectl.exe -n dev delete job $(kubectl.exe -n dev get job -o=jsonpath='{.items[?(@.status.succeeded==1)..."

2019-09-11T23:49:27Z

Created page with "Experiments with jobs. CLI <source lang=bash> # Delete completed jobs kubectl.exe -n dev delete job $(kubectl.exe -n dev get job -o=jsonpath='{.items[?(@.status.succeeded==1)..."

New page

Experiments with jobs.

CLI
<source lang=bash>
# Delete completed jobs
kubectl.exe -n dev delete job $(kubectl.exe -n dev get job -o=jsonpath='{.items[?(@.status.succeeded==1)].metadata.name}')
</source>

Self terminating one time off Jobs
<source lang=yaml>
---
apiVersion: batch/v1
kind: Job
metadata:
name: job-ttl-zero
namespace: dev
spec:
# ttlSecondsAfterFinished: 100 # requires enabling TTLAfterFinished on min v1.12
ttlSecondsAfterFinished: 0 # delete straight after completion
template:
spec:
containers:
- name: perl
image: perl
command: ["perl", "-Mbignum=bpi", "-wle", "print bpi(2000)"]
restartPolicy: Never
---
apiVersion: batch/v1
kind: Job
metadata:
name: job-activedeadlinedeconds
namespace: dev
spec:
backoffLimit: 2
activeDeadlineSeconds: 120
template:
spec:
containers:
- name: perl
image: perl
command: ["perl", "-Mbignum=bpi", "-wle", "print bpi(2000)"]
restartPolicy: Never
---
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: cron-delete-jobs
namespace: dev
spec:
schedule: "*/2 * * * *"
successfulJobsHistoryLimit: 2
failedJobsHistoryLimit: 2
jobTemplate:
spec:
template:
spec:
containers:
- name: kubectl-runner
image: wernight/kubectl
command: ["sh", "-c", "kubectl -n dev get jobs | awk '$4 ~ /[2-9]d$/ || $3 ~ 1' | awk '{print $1}' | xargs kubectl -n dev delete job"]
restartPolicy: Never
serviceAccountName: delete-jobs

---
apiVersion: v1
kind: ServiceAccount
metadata:
name: delete-jobs
namespace: dev
labels:
k8s-app: delete-jobs
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: delete-jobs
subjects:
- kind: ServiceAccount
name: delete-jobs
namespace: dev
roleRef:
kind: ClusterRole
name: delete-jobs
apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: delete-jobs
labels:
k8s-app: delete-jobs
rules:
- apiGroups: [""]
resources:
# - namespaces
- pods
verbs: ["list","delete"]
- apiGroups: ["batch"]
resources:
- jobs
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
</source>

When applied to minikube 1.15.2
<source lang=bash>
NAME COMPLETIONS DURATION AGE
job.batch/cron-delete-jobs-1568245320 1/1 8s 2m1s
job.batch/cron-delete-jobs-1568245440 0/1 1s 1s

NAME SCHEDULE SUSPEND ACTIVE LAST SCHEDULE AGE
cronjob.batch/cron-delete-jobs */2 * * * * False 1 2s 8m5s
</source>

= Resources =
*[https://kubernetes.io/docs/concepts/workloads/controllers/jobs-run-to-completion/ Jobs - Run to Completion]