Running Kubernetes on CoreOS on Google Compute Engine and using persistent disk volume mounting requires a custom compiled kubelet binary.

See https://github.com/GoogleCloudPlatform/kubernetes/issues/7042

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Compiling Kubernetes for Linux on OS X using docker-machine requires telling the build you don't use boot2docker directly:

    DOCKER_NATIVE=true build/run.sh hack/build-go.sh 

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`port-forward` relies on `socat` which is not available on CoreOS.