basic-commands.md

Kubernetes - Quick Command Reference

Minikube

minikube start

Starts minikube. If this hangs then see error #2 end of this page.

minikube stop

Stops the minikube virtual machine.

minikube delete

Do this to completely delete the minikube image. Delete if minikube is refusing to start or failing randomly.

minikube env

Find out the required environment variables to connect to the docker daemon running in minikube.

minikube ip

Find out the ip address of minikube. Needed for browser access.

Kubectl basic commands

kubectl get all

List all objects that you’ve created. Pods at first, later, ReplicaSets, Deployments and Services

kubectl get pods -o wide

List all pods with their IP and Node details

kubectl apply –f

Either creates or updates resources depending on the contents of the yaml file

kubectl apply –f .

Apply all yaml files found in the current directory

kubectl describe pod

Gives full information about the specified pod

kubectl exec –it

Execute the specified command in the pod’s container. Doesn’t work well in Cygwin.

kubectl get (pod | po | service | svc | rs | replicaset | deployment | deploy)

Get all pods or services. Later in the course, replicasets and deployments.

kubectl get po --show-labels

Get all pods and their labels

kubectl get po --show-labels -l {name}={value}

Get all pods matching the specified name:value pair

kubectl delete po

Delete the named pod. Can also delete svc, rs, deploy

kubectl delete po --all

Delete all pods (also svc, rs, deploy) Deployment Management

kubectl rollout status deploy

Get the status of the named deployment

kubectl rollout history deploy

Get the previous versions of the deployment

kubectl rollout undo deploy

Go back one version in the deployment. Also optionally -- to-revision=

Errors

1. kubectl apply schema error

https://stackoverflow.com/questions/55417410/kubernetes-create-deployment-unexpected-schemaerror

2. minikube or kubectl commands delays a lot.

It might be a memory issue. so increase the minikube RAM memory on VM.