To check your contexts, run:
kubectl config get-contexts
The asterisk(*) should be next to the current context you are using.
To switch contexts, use a context name displayed by the get-contexts command:
kubectl config use-context <context-name>
If you have a json or yaml file, run the following to create deployments and services in your current context:
kubectl create -f <your-file>
If you would like to change the number of pods deployed to your Kubernetes cluster, you can scale the deployment:
Here is an example command:
kubectl scale deployment <your-deployment> --replicas=3
You list configurations of all pods, deployments, and services by using the commands:
kubectl get deployments
kubectl get pods
kubectl get svc
To edit them (if you change the config, it will restart the component), use:
kubectl edit deployment <your-deployment>
kubectl edit pod <your-pod>
kubectl edit svc <your-service>
Likewise, you can delete by running kubectl delete deployment/pod/svc <name>.
If you delete a deployment, it will also kill all of the associated pods.
All of your kubectl cluster settings are located in your ~/.kube/config file.
If you decided to remove a Kubernetes cluster for whatever reason, you can clean
up your kubectl environment by running:
kubectl config delete-context <context-name>
kubectl config delete-cluster <cluster-name>
You can verify that it is been removed by lookin at your ~/.kube/config file.