invalid apiVersion "client.authentication.k8s.io/v1beta1"

[haysclark]

Got this error when following the example and trying the second step:

2. Check that your cluster is available: kubectl --context do-nyc1-example get nodes

Output with error message:

☹  kubectl --context do-nyc1-example get nodes
error: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1beta1"

Repo notes:
doctl version: 1.20.0-release

kubectl version:

Client Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.11", GitCommit:"637c7e288581ee40ab4ca210618a89a555b6e7e9", GitTreeState:"clean", BuildDate:"2018-11-26T14:38:32Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"darwin/amd64"}
error: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1beta1"

[haysclark]

Fixed, it was an issue with my local OSX setup.

TL;DR

I had installed kubectl with Homebrew via: brew install kubectl and I should have used brew install kubernetes-cli per kubernetes.io docs. Thus, my local setup was not able query the Server Version.

Now all is well when I run step 2, and this is my kubectl version output:

Client Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.3", GitCommit:"5e53fd6bc17c0dec8434817e69b04a25d8ae0ff0", GitTreeState:"clean", BuildDate:"2019-06-07T09:57:54Z", GoVersion:"go1.12.5", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.1", GitCommit:"b7394102d6ef778017f2ca4046abbaa23b88c290", GitTreeState:"clean", BuildDate:"2019-04-08T17:02:58Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"}

[cheemcheem]

Just to add to this, I experienced this issue and it was because I had an old installation of Docker Desktop on OSX and its installation had set up this symlink:
/usr/local/bin/kubectl -> /Applications/Docker.app/Contents/Resources/bin/kubectl

To fix the issue, I opened Docker Desktop and it prompted me to update which I did. I'm now on version 2.5.1.4 (49550) and the issue has gone away.

[gaffneyd4]

For anyone else who goes looking for this message, I ran into it due to the latest version of aws-iam-authenticator (0.5.5) requiring client.authentication.k8s.io/v1beta1 in the user exec kubeconfig block.

kubernetes-sigs/aws-iam-authenticator#386 (comment)