kustomize

Kubernetes resources have quite a lot of lists in them and replacing an item in such lists is quite easy using kustomize patches with op: replace.

Replacing a specific list item safely however is not as obvious as the order of items could change, leading to a technically valid but practically incorrect manifest.

How to add things to a list using kustomize. This is useful for example when you need to patch additional environment variables into a pod.

My prefered tool for writing and provisioning home-built manifests to [[kubernetes]]