"cannot connect to k8s api server" after restarting docker

charm
1

Hi! I’m trying to install Charmed Kubeflow on macos according to the docs. These commands worked fine:

brew install juju
minikube start
juju add-k8s myk8s
juju bootstrap myk8s my-controller
juju add-model kubeflow

After that I read the minimal requirements for the memory, changed my memory settings and restared the Docker Desktop. Now any juju command gives the same error, e.g.:

$ juju status
ERROR cannot connect to k8s api server; try running 'juju update-k8s --client <k8s cloud name>'

juju update-k8s does not solve the issue. I tried to remove and install the juju package again, to reboot the laptop. I didn’t find any service or running process related to juju. I checked that minikube is running and my kubectl works. It means that the kube’s config contains the correct address of the kube’s API.

How to fix the issue?

2

Hello

Unfortunately we don’t support this kind of setup at the moment (running under Docker Desktop with Minikube). I recommend using a VM running Ubuntu 20.04 LTS on your Mac instead, and installing MicroK8s in it; then deploying Charmed Kubeflow on top.

For the Juju bug, I believe this can sometimes happen when the K8s API’s certificates are regenerated, most typically triggered by a change in the network configuration. Until this gets fixed you could work around it by assigning a static IP to the VM.

HTH Rob

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