Is there any way to disable the random numbers and letters pulumi creates on k8s resources?

yes, set the name in the metadata

ns = k8s.core.v1.Namespace(
    "cool",
    metadata=k8s.meta.v1.ObjectMetaArgs(
        name="cool-namespace",
    ),
)

Awesome thanks!

@glamorous-australia-21342 here’s some documentation about auto-naming and its tradeoffs: https://www.pulumi.com/docs/intro/concepts/resources/names/#autonaming