Use different name of the kustomization.yaml

Currently there is no possibility to change the behavior of kustomize to support other file names (by using precompiled binaries) than:

• kustomization.yaml
• kustomization.yml
• Kustomization

All of the below cases will produce the same error output:

• kubectl kustomize dir/
• kubectl apply -k dir/
• kustomize build dir/

Error: unable to find one of 'kustomization.yaml', 'kustomization.yml' or 'Kustomization' in directory 'FULL_PATH/dir'

Depending on the CI/CD platform/solution/tool you should try other way around like for example:

• split the Deployment into 2 directories kustomization_deploy/kustomization_rollback with kustomization.yaml

As a side note!

File names that kustomize uses are placed in the:

• /kubernetes/vendor/sigs.k8s.io/kustomize/pkg/constants/constants.go

// Package constants holds global constants for the kustomize tool.package constants// KustomizationFileNames is a list of filenames that can be recognized and consumbed// by Kustomize.// In each directory, Kustomize searches for file with the name in this list.// Only one match is allowed.var KustomizationFileNames = []string{  "kustomization.yaml",  "kustomization.yml",  "Kustomization",}

The logic behind choosing the Kustomization file is placed in:

• /kubernetes/vendor/sigs.k8s.io/kustomize/pkg/target/kusttarget.go

Additional reference:

• Github.com: Kubernetes-sigs: Kustomize
• Kubernetes.io: Docs: Tasks: Manage kubernetes objects: Kustomization