Published at LXer:
Following bellow was accepted as correct answer on 02/18/2014 at
https://ask.openstack.org/en/questio...nd-on-f19/.RDO Openstack Nova Software evaluated that my Compute Node may run at a time no more then 5 cloud instances. So , to create new one I just must have in `nova list` no more then four entries. Then I will be able create new one instance for sure. It has been tested on two "Two Node Neutron GRE+OVS Systems" ( watching in other window `tail -f /var/log/nova/scheduler.log` for ERRORS to connect AMQP Server) . It looks like AMQP Server eventually breaks connection to Nova & Neutron-server services, what may require service QPIDD restart and service openstack-nova-scheduler restart.
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