Lab 6.3 - Error when trying to create cron job

sdalziel

Hi all,

I'm working on "Exercise 6.3: Working with Cron Jobs". I have created the YAML file cron-job.yaml as shown below:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: date
spec:
  schedule: "*/1 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: dateperminute
            image: busybox
            args:
            - /bin/sh
            - -c
            - date; sleep 30
         restartPolicy: OnFailure

When I attempt step 2. Create the cron job. I receive the error below.

~$ kubectl create -f cron-job.yaml
error: error converting YAML to JSON: yaml: line 17: did not find expected key

Please advise what key I should be providing. 

serewicz

Hello,

Typically when you have this sort of error its because of whitespace indentation.  Often the error is actually on the preceeding line, but reports on the following line when there is an issue with that line.  In this case the very last line needs an extra whitespace to work.  If you get an error like this in the future, one idea is to use an online parser: https://www.json2yaml.com/ Replace the yaml on the right of the page and you'll see any errors.  Its also nice because you get immediate feedback as you work with the yaml. 

For the pasting above I used the website and when I moved the restartpolicy on line 18 so it lined up with containers on line 11 the JSON become clear and looked like this:

{
  "apiVersion": "batch/v1beta1",
  "kind": "CronJob",
  "metadata": {
    "name": "date"
  },
  "spec": {
    "schedule": "*/1 * * * *",
    "jobTemplate": {
      "spec": {
        "template": {
          "spec": {
            "containers": [
              {
                "name": "dateperminute",
                "image": "busybox",
                "args": [
                  "/bin/sh",
                  "-c",
                  "date; sleep 30"
                ]
              }
            ],
            "restartPolicy": "OnFailure"
          }
        }
      }
    }
  }
}

Regards,

sdalziel

Cheers! The website showed me the extra spaces.

s.