Load config fails with `env: null` in users/user/exec section

[Lawouach]

Hey there,

Client: 8.0.0a1
Server: Kubernetes 1.10.3
Provider: EKS

I created a cluster using eksctl and the generated kubeconf has the entry env: null under users/user/exec to which the client responds with:

ERROR:root:Invalid kube-config file. Expected key env in kube-config/users[name=iam-some-account@my-cluster.us-west-2.eksctl.io]/user/exec

When I remove the key entirely, it works nicely. When I fill the key with dictionary entries, it works too. I can only assume either env: null is invalid (then I will open a ticket on eksctl) or the client should support it.

Thanks,

[errordeveloper]

hey @Lawouach, thanks for finding and reporting this! Arguably, all client should tolerate this (null instead of {} or []), as kubectl and k8s.io/client-go currently do. The root cause of this is the exec authentication plugin stanza, which is still an alpha API (client.authentication.k8s.io/v1alpha1).

- name: ilya@unique-hideout-1536840907.us-west-2.eksctl.io
  user:
    exec:
      apiVersion: client.authentication.k8s.io/v1alpha1
      args:
      - token
      - -i
      - unique-hideout-1536840907
      command: heptio-authenticator-aws
      env: null

So to me this looks like two bugs actual bugs, what do you think?

[Lawouach]

Thank you @errordeveloper for the feedback here. I was struggling to find the API definition for this API. Arguably, the client should likely not choke on this value indeed.

[sc250024]

Having the same problem. What was the outcome of this? Is there a PR with a fix, or is it something we all need to change?

[roycaihw]

I think @fillbit has a PR fixing this from client side: kubernetes-client/python-base#91. I will take a look at it today. Thanks for reporting :)

[roycaihw]

Fixed by kubernetes-client/python-base#91