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I get this error when using

host.k3d.internal

"<https://host.k3d.internal:34139/version>": x509: certificate is valid for host.docker.internal, k3d-lingua-greeter-server-0, kubernetes, kubernetes.default, kubernetes.default.svc, kubernetes.default.svc.cluster.local, localhost, not host.k3d.internal

I wonder how host.k3d.internal works in a non-k3d container? I would've gone with host.docker.internal or the container name or container IP (if the client container is in the same network)

host.docker.internal

did not work as well and finally I used the

kubernetes.default.svc.cluster.local

and that seemed to work

So it's a pod, not another docker container like you wrote initially?

yeah its a pod, sorry that was my typo 😄

Then kubernetes.default makes the most sense given that it's an in-cluster connection. Still, feel free to open an issue about adding a TLS SAN for host.k3d.internal 👍