> http://imgur.com/a/6xkaS
I had similar errors with one single host and a hosted-engine VM.
My case should be totally different, but one thing you could try first is to check VM is really up.
In my issues, VM was shown by hosted-engine command as up, but was down. with vdsClient command, you can check if it's status with more details.
What is the result for you of the following command ?
vdsClient -s 0 list