Support bypassing cluster local kubeconfig in favor of explicit kubeconfig

[xrmzju]

Update by @consideRatio

If KubeSpawner is to do work in another cluster, it needs a way to get passed the credentials to speak with that k8s clusters api-server. Currently our logic doesn't support this.

https://github.com/jupyterhub/kubespawner/blob/37a80abb0a6c826e5c118a068fa1cf2725738038/kubespawner/reflector.py#L125-L132

Original issue

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[consideRatio]

I need more details here to better think about this.

I use kubespawner from a jupyterhub living in a container in a pod in the k8s it control. I do it as part of the zero-to-jupyterhub-k8/s project. This jupyterhub pod has the rights to work on with the k8s api-server in the cluster by the RBAC details configured for the pod's service account.

Please describe your use case a bit @xrmzju, that is essential for work to be done towards it.

[xrmzju]

I need more details here to better think about this.

I use kubespawner from a jupyterhub living in a container in a pod in the k8s it control. I do it as part of the zero-to-jupyterhub-k8/s project. This jupyterhub pod has the rights to work on with the k8s api-server in the cluster by the RBAC details configured for the pod's service account.

Please describe your use case a bit @xrmzju, that is essential for work to be done towards it.

sry i just opened the issue for a mark yesterday. in my case, i need to deploy jupyterhub in cluster A and create notebook pod in cluster B, so kubespawner need to support load external cluster config(in my case, kubeconfig), but for now, it uses the default in cluster client.

[manics]

@xrmzju What happens when you specify a kubeconfig at the moment? https://github.com/jupyterhub/kubespawner/blob/37a80abb0a6c826e5c118a068fa1cf2725738038/kubespawner/reflector.py#L125-L132 implies it should already work.

[xrmzju]

@xrmzju What happens when you specify a kubeconfig at the moment? https://github.com/jupyterhub/kubespawner/blob/37a80abb0a6c826e5c118a068fa1cf2725738038/kubespawner/reflector.py#L125-L132

implies it should already work.

i made it work by pass api_client client = Client(api_client=config.new_client_from_config(),*args, **kwargs) in L43