Unable to connect to the server: dial tcp i/o time out

Question

When i run the kubectl version command , I get the following error message.

kubectl version
Client Version: version.Info{Major:\"1\", Minor:\"9\", GitVersion:\"v         


        

Answer 1

I got similar problem when I run

$ 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"}
Unable to connect to the server: dial tcp 192.168.99.100:8443: i/o timeout

And here's how I tried and finally worked.

I installed Docker Desktop on Mac (Version 2.0.0.3) firstly. Then I installed the kubectl with command

$ brew install kubectl
.....
==> Pouring kubernetes-cli-1.16.0.high_sierra.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink bin/kubectl
Target /usr/local/bin/kubectl
already exists. You may want to remove it:
  rm '/usr/local/bin/kubectl'

To force the link and overwrite all conflicting files:
  brew link --overwrite kubernetes-cli

To list all files that would be deleted:
  brew link --overwrite --dry-run kubernetes-cli

Possible conflicting files are:
/usr/local/bin/kubectl -> /Applications/Docker.app/Contents/Resources/bin/kubectl
.....

That doesn't matter, we have already got the kubectl. Then I install minikube with command

$ brew cask install minikube
...
==> Linking Binary 'minikube-darwin-amd64' to '/usr/local/bin/minikube'.
                                                                    

                                                        
            

Answer 2

You can get relevant information about the client-server status by using the following command.

kubectl config view 

Now you can update or set k8s context accordingly with the following command.

kubectl config use-context kubernetes

you can do further action on kubeconfig file. the following command will provide you with all necessary information.

kubectl config --help

Answer 3

I was facing the same issue on Ubuntu 18.04.1 LTS.

The solution provided here worked for me.

Just putting the same data here:

1. Get current cluster name and Zone:

   gcloud container clusters list

2. Configure Kubernetes to use your current cluster:

   gcloud container clusters get-credentials [cluster name] --zone [zone]

Hope it helps.

Answer 4

I had the same issue when I tried use kubrnetes installed with Docker. It turned out that it was not enbled by default.

First I enabled kubrnetes in Docker options and then I changed context for docker-for-desktop

kubectl config get-contexts
kubectl config use-context docker-for-desktop

It solved the issue.