kubernetes: Ubuntu: kube-up.sh failed

Is this a request for help? (If yes, you should use our troubleshooting guide and community support channels, see http://kubernetes.io/docs/troubleshooting/.):

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Is this a BUG REPORT or FEATURE REQUEST? (choose one):

Kubernetes version (use kubectl version):

Environment:

• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

What happened:

root@k8s003:~/kubernetes/cluster# KUBERNETES_PROVIDER=ubuntu ./kube-up.sh
... Starting cluster using provider: ubuntu
... calling verify-prereqs
Identity added: /root/.ssh/id_rsa (/root/.ssh/id_rsa)
... calling verify-kube-binaries
!!! kubectl appears to be broken or missing
!!! Cannot find kubernetes-server-linux-amd64.tar.gz
Required binaries appear to be missing. Do you wish to download them? [Y/n]
Y
Can't determine Kubernetes release.
/root/kubernetes/cluster/get-kube-binaries.sh should only be run from a prebuilt Kubernetes release.
Did you mean to use get-kube.sh instead?

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else do we need to know: