Error while running kubectl commands

Question

I have recently installed minikube and kubectl. However when I run kubectl get pods or any other command related to kubectl I get the error

Unable to connect to the server: unexpected EOF

Does anyone know how to fix this?I am using Ubuntu server 16.04.Thanks in advance.

Answer 1

The following steps can be used for further debugging.

1. Check the minikube local cluster status using minikube status command.

    $: minikube status minikube: Running cluster: Running kubectl: Correctly Configured: pointing to minikube-vm at 172.0.xy

2. If problem with kubectl configuratuion,then configure it using, kubectl config use-context minikube command.

    $: kubectl config use-context minikube Switched to context "minikube".

3. Check the cluster status, using kubectl cluster-info command.

    $: kubectl cluster-info Kubernetes master is running at ... Heapster is running at ... KubeDNS is running at ... ... To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

Note: It can even be due to very simple reason: internet speed (it happend to me just now).

Answer 2

I have same problem too. I solved after change the server addr to localhost

  apiVersion: v1
  clusters:
  - cluster:
      certificate-authority: /var/lib/minikube/certs/ca.crt
      server: https://localhost:8443 # check it 
    name: m01
...
  users:
  - name: m01
    user:
      client-certificate: /var/lib/minikube/certs/apiserver.crt
      client-key: /var/lib/minikube/certs/apiserver.key

Answer 3

I think your kubernetes master is not setup properly. You can check that by checking the following services in master node are in active state and running.

etcd2.service 
kube-apiserver.service          Kubernetes API Server
kube-controller-manager.service Kubernetes Controller Manager
kube-scheduler.service          Kubernetes Scheduler