The root cause of the issue is that current MOS deployment uses python dict to store tokens, so they are not shared between controller nodes. During round robin mechanism vnc is available in ~30% attempts. Here is PoC ansible playbook, that allows to mitigate this problem: http://xsnippet.org/361719/ Setting priority to Low, as Jay proposed in #5 comment.
The root cause of the issue is that current MOS deployment uses python dict to store tokens, so they are not shared between controller nodes. During round robin mechanism vnc is available in ~30% attempts. Here is PoC ansible playbook, that allows to mitigate this problem: http:// xsnippet. org/361719/ Setting priority to Low, as Jay proposed in #5 comment.