kubectl describe pod Error from server (NotFound)：pods not found

kubectl get pods -n kube-system

kubectl describe pods/heapster-7ff8d6bf9f-zt6kw

明明有pod，但是无法查看详细信息

必须得指定namespace，因为系统中存在多个namespace

kubectl describe pods/heapster-7ff8d6bf9f-zt6kw --namespace kube-system