Kustomize

Kustomize is a template-free way to customize application configurations and allows layering of configurations based on the target environment; for example, we are able to set a different password in each environment easily with layering.

In 'smoothglue-dev2/configmap.yaml', we can see the 'idpMetadata' value is different, as there is IdP-specific information. Kustomize allows us to overlay those and other similar configurations.