// runMachineUpdate connects via ssh to the machine and runs the update script
func runMachineUpdate(client *api.Client, id string, sshArg string) error {
progress("updating machine: %v\n", id)
addr, err := client.PublicAddress(id)
if err != nil {
return errors.Annotate(err, "no public address found")
}
return runViaSsh(addr, sshArg)
}