CODEWITHSUNDEEP
kubernetescron
Ankit Sharma
Ankit Sharma

Reputation: 513

Affinity of job in kubernetes

What is the default node affinity of a Cron job pod? How can we set it manually?

I have a pod and have set its affinity to node3.

However, the cron job container is still getting completed on node1 all the time when it triggers.

Upvotes: 6

Views: 6141

Answers (1)

Rico
Rico

Reputation: 61561

Essentially, in your CronJob spec, the template is the PodSpec and that's where you need to configure the 'Node Affinity'. For example,

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: hello
spec:
  schedule: "*/1 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox
            args:
            - /bin/sh
            - -c
            - date; echo Hello from the Kubernetes cluster
          restartPolicy: OnFailure
          nodeSelector: 👈
            name: node3 👈

This is assuming the label 🏷️ in your node is name=node3.

Upvotes: 5

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