I want to create a crone in cluster which should have access to all of namespaces-CodePudding

I want to create a crone in the cluster which should have access to all of the namespaces, I don't want to configure that job in each and every namespace as I have multiple namespaces. Is this possible? Edit: I want to run same cronjob in all namespace

CodePudding user response：

You can use helm to achieve this, either static namespaces or dynamic all namespaces.

{{- range $namespaces := .Values.namespaces }}
apiVersion: batch/v1
kind: CronJob
metadata:
  name: hello
  namespace: {{ $namespaces }}
spec:
  schedule: "* * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox:1.28
            imagePullPolicy: IfNotPresent
            command:
            - /bin/sh
            - -c
            - date; echo Hello from the Kubernetes cluster
          restartPolicy: OnFailure
---
{{- end }}

and values file

namespaces:
  - namesapce-1
  - namesapce-2

Dynamic namespaces:

helm install my-cronjob  helm-chart --set "namespaces={$(k get ns | awk 'BEGIN{ORS=","} { if (NR>1) print $1}')}"

A complete working example multi-namespace-deployment