kubectl get ns
kubectl get all
kubectl get all --all-namespaces
clear
kubectl get svc -n kube-system
kubectl create ns kubekart
kubectl run nginx1 --image=nginx -n kubekart
kubectl run nginx1 --image=nginx -n kubekart

vim pod1.yaml
cat pod1.yaml
apiVersion: v1
kind: Pod
metadata:
  name: nginx12
  namespace: kubekart
spec:
  containers:
  - name: nginx
    image: nginx:1.14.2
    ports:
    - containerPort: 80

kubectl apply -f pod1.yaml
kubectl get pod -n kubekart
kubectl delete ns kubekart