Schedule k6 tests

While the k6 Operator doesn’t support scheduling k6 tests directly, you can schedule tests with the CronJob object from Kubernetes directly. The CronJob would run on a schedule and execute the creation and deletion of the TestRun object.

Running these tests requires a little more setup than a standalone test run.

Create a `ConfigMap` with k6 scripts

Refer to Run k6 scripts with TestRun CRD for details on how to create a ConfigMap with k6 scripts.

Create a ConfigMap of the YAML file for the `TestRun` job

When using the make deploy installation method, add a configMapGenerator to the kustomization.yaml:

configMapGenerator:
  - name: <test-name>-config
    files:
      - <test-name>.yaml

Create a `ServiceAccount` for the `CronJob`

For the CronJob to be able to create and delete TestRun objects, create a service account:

---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: k6-<namespace>
rules:
  - apiGroups:
      - k6.io
    resources:
      - testruns
    verbs:
      - create
      - delete
      - get
      - list
      - patch
      - update
      - watch
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: k6-<namespace>
roleRef:
  kind: Role
  name: k6-<namespace>
  apiGroup: rbac.authorization.k8s.io
subjects:
  - kind: ServiceAccount
    name: k6-<namespace>
    namespace: <namespace>
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: k6-<namespace>

Create a `CronJob`

This is an example of how to define a CronJob in a YAML file:

# snapshotter.yml
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: <test-name>-cron
spec:
  schedule: '<cron-schedule>'
  concurrencyPolicy: Forbid
  jobTemplate:
    spec:
      template:
        spec:
          serviceAccount: k6
          containers:
            - name: kubectl
              image: bitnami/kubectl
              volumeMounts:
                - name: k6-yaml
                  mountPath: /tmp/
              command:
                - /bin/bash
              args:
                - -c
                - 'kubectl delete -f /tmp/<test-name>.yaml; kubectl apply -f /tmp/<test-name>.yaml'
          restartPolicy: OnFailure
          volumes:
            - name: k6-yaml
              configMap:
                name: <test-name>-config