Kubectl: Kubectl 1.10.0 is unable to create deployments on clusters running 1.8.7

[ihoegen]

Is this a BUG REPORT or FEATURE REQUEST? (choose one):

/kind bug

Kubernetes version (use kubectl version):

Client Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.0", GitCommit:"fc32d2f3698e36b93322a3465f63a14e9f0eaead", GitTreeState:"clean", BuildDate:"2018-03-27T00:13:02Z", GoVersion:"go1.9.4", Compiler:"gc", Platform:"darwin/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"}

Environment:

• Cloud provider or hardware configuration: AWS
• OS: macOS 10.13.3
• Kernel: Darwin 17.4.0
• Install tools: brew

What happened:

When creating a sample deployment using the command kubectl create -f deployment.yaml, the following output appears:

Error from server (NotAcceptable): unknown

What you expected to happen:

When running the same command again, kubectl create -f deployment.yaml, with kubectl version 1.9.3, the following output appears:

deployment "nginx-deployment" created

A better error message describing incompatibility might be useful.

How to reproduce it (as minimally and precisely as possible):

1. Use the following config, and save it as deployment.yaml:

apiVersion: apps/v1beta2 
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 2
  template: 
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80

1. Run kubectl create -f deployment.yaml using kubectl 1.10.0

[ihoegen]

Opened issue here as well: https://github.com/kubernetes/kubernetes/issues/61943

[jheiss]

This can probably be closed since the other ticket has been fixed and closed.

[liggitt]

resolved in 1.10.1

[jonathanbeber]

Hi,

I'm with client 1.11.0 and server v1.8.8 and facing the same issue. Should I open a new issue?

[liggitt]

I'm with client 1.11.0 and server v1.8.8 and facing the same issue. Should I open a new issue?

No. 1.8.x servers have a known bug that makes them respond incorrectly to requests containing Accept headers they don't recognize. This was fixed in 1.9.0.

1.8.x is outside the supported skew window for kubectl 1.11.0