question: namespace in kustomization.yaml file necessary

[chrislin22]

qq: https://github.com/fluxcd/flux2-kustomize-helm-example/blob/main/apps/staging/kustomization.yaml#L3

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: podinfo
....

is namespace: podinfo here necessary? The reason that I ask is that our kustomization.yaml will cover many namespaces. Thanks -cl

[stefanprodan]

You can set the namespace inside each file instead of this one place

[chrislin22]

so a top kustomzation.yaml file which reference each namespace's kustomization file (if they are in the same directory, then we have to use name other than kustomzation.yaml, e.g. kustomzation-ns1.yaml), more like this: https://github.com/kubernetes-sigs/kustomize/blob/master/examples/multibases/multi-namespace.md

Just curious, we tried use the kustomzation.yaml without namespace and it seems to be working as well?

[stefanprodan]

then we have to use name other than kustomzation.yaml, e.g. kustomzation-ns1.yaml

Kustomize only works with kustomzation.yaml

Just curious, we tried use the kustomzation.yaml without namespace and it seems to be working as well?

That's because we set the namespace in the podinfo manifests.