kubernetes: Kubectl 1.11.0 is unable to get pods or nodes on clusters running 1.8.4

I just started getting this after upgrading kubectl to 1.11.0.

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.0", GitCommit:"91e7b4fd31fcd3d5f436da26c980becec37ceefe", GitTreeState:"clean", BuildDate:"2018-06-27T20:17:28Z", GoVersion:"go1.10.2", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.7", GitCommit:"b30876a5539f09684ff9fde266fda10b37738c9c", GitTreeState:"clean", BuildDate:"2018-01-16T21:52:38Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

Downgrading to 1.8.7 to match my server version fixed my issue (same as stephanwesten previously mentioned)

$ curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.8.7/bin/linux/amd64/kubectl
$ chmod +x ./kubectl
$ sudo mv ./kubectl /usr/local/bin/kubectl

Had same issues , for some reason I got to 1.11.0 version and that did not work… MAC users try version 1.10.0 or replace the curl version with whatever you think it will work for you.

curl -LO curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.10.0/bin/darwin/amd64/kubectl

chmod +x ./kubectl

sudo mv ./kubectl /usr/local/bin/kubectl

I had the same problem on macos with the exact same versions.

Downgraded kubectl to v1.8.7 and it seems to solve the problem

wget https://storage.googleapis.com/kubernetes-release/release/v1.8.7/bin/darwin/amd64/kubectl

It would be good to improve the error message, as a user you are clueless how to solve this issue.

I can confirm the workaround works also on Mac for getting pods:

$ kubectl get pods --server-print=false While without --server-print the command gives an error:

$ kubectl get pods
Error from server (NotAcceptable): unknown (get pods)

Got the same error with clusters running on 1.8.6

For macOs users, brew switch will only worked if you already have 1.10 installed before, if not, you can get it right from the commit

brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/54fc5aea2094d4d21e49383052fd2b975fbf6d6a/Formula/kubernetes-cli.rb
######################################################################## 100.0%
Warning: kubernetes-cli 1.11.2 is available and more recent than version 1.10.2.
==> Downloading https://homebrew.bintray.com/bottles/kubernetes-cli-1.10.2.el_capitan.bottle.tar.gz
…

brew info kubernetes-cli
kubernetes-cli: stable 1.11.2 (bottled), HEAD
Kubernetes command-line interface
https://kubernetes.io/
/usr/local/Cellar/kubernetes-cli/1.10.2 (178 files, 52.8MB)
  Built from source on 2018-08-13 at 15:44:36
/usr/local/Cellar/kubernetes-cli/1.11.0 (196 files, 53.8MB)
  Poured from bottle on 2018-07-12 at 13:49:59

then, switch to 1.10.2 brew switch kubernetes-cli 1.10.2

Workaround I found on Azure (probably others as well) is to pass --server-print=false:

kubectl get componentstatuses --server-print=false

It appears to be related to a new “Server-side columns” feature introduced in 1.11.0. Here’s a link to the reference: https://kubernetes.io/docs/reference/kubectl/overview/#server-side-columns

@darthmetu

edit: reference to azure issue: https://github.com/Azure/azure-cli/issues/7440

kubectl get pods --all-namespaces also works on 1.11.3

is this issue closed because it won’t be fixed?

Yes. 1.8 is outside the supported skew window for kubectl 1.11, and the server side bug causing this is fixed in 1.9+

I’ve resolved the same issue by downgrading to 1.10.2

brew switch kubernetes-cli 1.10.2

Downgraded to 1.10.5 as a workaround, looks fine brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/d09d97241b17a5e02a25fc51fc56e2a5de74501c/Formula/kubernetes-cli.rb brew switch kubernetes-cli 1.10.5

Thanks @pauldutheil and @wilsonsilva

You can also add the -w switch or switch the output using -o. I had to do this when using kubectl on Azure in the cloud shell as I can’t control the versions there. Not ideal but it will work.

kubectl supports +/- 1 version of skew against the API server. kubectl 1.11 defaults to requesting table output from the apiserver by sending the following accept header:

Accept: application/json;as=Table;v=v1beta1;g=meta.k8s.io, application/json

servers prior to 1.9 do not handle that accept header correctly (and return the “Not Acceptable” error, which kubectl displays). this was resolved in https://github.com/kubernetes/kubernetes/pull/50603

/close

I am also facing same problem please give solution.

No resources found. Error from server (NotAcceptable): unknown (get nodes)

Thanks srikant

Downgrading to version 1.10.0 fixed the issue for me.

kubectl get pods --server-print=false works on ubuntu, thanks

Note that you are only affected if you make use of the kubectl cp command

Downgrading to v1.10.5 works well too.