using ConfigMap created using Generator in Kustomize/Kubernetes

Question

I have been trying to figure out how to consume a ConfigMap created using a ConfigMap generator via Kustomize.

When created using Kustomize generators, the configMaps are named with a special suffix. See here:

https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/#create-a-configmap-from-generator

Question is how can this be referenced?

Answer 1

You don't reference it yourself. Kustomize recognizes where the configMap is used in the other resources (like a Deployment) and changes those references to use the name+hash.

The reason for this is so that if you change the configMap, Kustomize generates a new hash and updates the Deployment, causing a rolling restart of the Pods.

If you don't want this behavior, you can add the following to your kustomization.yaml file:

generatorOptions:
  disableNameSuffixHash: true