First of all, you need to have kubectl CLI in your host machine. So, follow the below steps.
Install with Chocolatey on Windows
choco install kubernetes-cli
Install with Homebrew on MacOS
brew install kubernetes-cli
Install with Kubernetes Official Documentation(with Curl)
Follow this link https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl-on-macos
Test to ensure the version you installed
Checking kubectl config
When you run below command, you will see output as shown in the following screenshot. I didn't configure yet so, it shows an empty config.
kubectl config view
Creating ~/.kube/config file
In order to connect a Kubernetes cluster from your host machine, there should be $HOME/.kube/config (default location) file in your local machine if you didn't set KUBECONFIG environment variable. So, run the below command to create that file in your local machine. 🙂
mkdir -p $HOME/.kube && nano $HOME/.kube/config
Now we need to copy
$HOME/admin.conf file content (both files should be same) from Kubernetes master node terminal as show in the following screenshot
After copying Kubernetes kubectl config from master node, paste in your host machine kubectl config file ($HOME/.kube/config) like below screenshot and save.
Connecting multiple Kubernetes cluster with kubeconfig
If you have multiple Kubernetes cluster config file in your host machine, then you can connect different Kubernetes clusters with the following commands.
kubectl get nodes --kubeconfig $HOME/admin_buildServerCluster.conf
kubectl get nodes --kubeconfig $HOME/admin_backEndCluster.conf
kubectl get nodes --kubeconfig $HOME/admin_gatewayCluster.conf
Connecting multiple Kubernetes cluster with server
If you don't have kubectl config files in your host machine, then you can use server option of kubectl command as well.
kubectl get nodes --server=https://192.168.33.10:6443
kubectl get nodes --server=https://184.108.40.206:6443