feat(k8s): cron jobs

Author: rolandszoke

app/job-cron.yaml

@@ -0,0 +1,15 @@
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: training-job-cron
+spec:
+  schedule: "*/1 * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: training-job-cron
+            image: busybox
+            command: ['sh', '-c', 'date; echo Hello from the Kubernetes cluster']
+          restartPolicy: OnFailure

commands.txt

@@ -66,3 +66,13 @@ kubectl create -f ./job-parallel-queue.yaml
 jobsArray=($(echo $(kubectl get pods  --show-all --selector=job-name=training-job-parallel --output=jsonpath={.items..metadata.name}) | tr ' ' '\n'))
 kubectl logs ${jobsArray[1]}
 kubectl logs ${jobsArray[2]}0
+
+### cron job ###
+kubectl create -f ./job-cron.yaml
+kubectl get cronjob training-job-cron
+# this will create a cronjob which is going to create a job in every minute
+# if you want to see the logs of a job: get jobs, select one from the cron, find its pod and log it
+# kubectl get jobs
+# pod=$(kubectl get pods -a --selector=job-name=training-job-cron-1516207920 --output=jsonpath={.items..metadata.name})
+# kubectl logs $pod
+kubectl delete cronjob hello