How do I get Kubernetes to work when I get an error "the server could not find the requested resource"?

I cannot create a kubernetes pod. I just deployed Kubernetes to Ubuntu 16.04.

I have this as a.yml:

apiVersion: v1
kind: ReplicationController
metadata:
  name: nginx
spec:
  replicas: 2
  selector:
    app: nginx
  template:
    metadata:
      name: nginx
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

I run this: kubectl create -f a.yml

I get this:


Error from server (NotFound): the server could not find the requested
resource

I expected the above command to create a pod.

I ran this: kubectl cluster-info dump

I got this:

```
{
"selfLink": "/api/v1/nodes",
"resourceVersion": "185",
"Items": [
{
"name": "ip-10-10-10-10",
"selfLink": "/api/v1/nodes/ip-10-10-10-10",
"uid": "cdc51051-ea07-11e7-b7ae-025c31abfac0",
"resourceVersion": "185",
"creationTimestamp": "2017-12-26T06:41:29Z",
"labels": {
"kubernetes.io/hostname": "ip-10-10-10-10"
},
"Spec": {
"PodCIDR": "",
"ExternalID": "ip-10-10-10-10",
"ProviderID": "",
"Unschedulable": false,
"Taints": null,
"ConfigSource": null
},
"Status": {
"Capacity": {
"cpu": "0",
"memory": "0",
"pods": "40"
},
"Allocatable": {
"cpu": "0",
"memory": "0",
"pods": "40"
},
"Phase": "",
"Conditions": [
{
"Type": "Ready",
"Status": "True",
"LastHeartbeatTime": "2017-12-26T07:03:01Z",
"LastTransitionTime": "2017-12-26T06:41:29Z",

As per https://kubernetes.io/docs/tasks/tools/install-kubectl/#before-you-begin:


You must use a kubectl version that is within one minor version difference of your cluster. For example, a v1.2 client should work with v1.1, v1.2, and v1.3 master. Using the latest version of kubectl helps avoid unforeseen issues.

So you need to either downgrade your kubectl version or upgrade your cluster version.

StackExchange DevOps Q#2956, answer score: 7