Antivax (pun intended)

A MutatingWebhook that will avoid Linkerd injection on your CronJobs and Jobs.

Dependencies

• cert-manager

How to use

1. Apply the deployment.yaml file to your cluster. This will create the antivax namespace and deploy the mutating webhook.

2. Add the antivax: enabled label to the namespaces you want to avoid Linkerd injection.

What if I want to allow injection in only one Cronjob/Job?

Then you'll need to manually add the annotation to that resource:

1. CronJob example:

apiVersion: batch/v1
kind: CronJob
metadata:
  name: testcronjob
  namespace: antivax
spec:
  schedule: "* * * * *" #	Run every minute
  jobTemplate:
    spec:
      template:
        metadata:
          annotations:
            linkerd.io/inject: enabled
        spec:
          containers:
            - name: testcronjob
              image: busybox:latest
              imagePullPolicy: IfNotPresent
              command:
                - /bin/sh
                - -c
                - date; echo Hello!
          restartPolicy: OnFailure

2. Job example:

apiVersion: batch/v1
kind: Job
metadata:
  name: testjob
  namespace: antivax
spec:
  template:
    metadata:
      annotations:
        linkerd.io/inject: enabled
    spec:
      automountServiceAccountToken: false
      containers:
        - name: testjob
          image: busybox:latest
          imagePullPolicy: IfNotPresent
          command:
            - /bin/sh
            - -c
            - date; echo Hello!
      restartPolicy: OnFailure