The scheduler filters section provides detailed information on controlling where your instances run, including ensuring a set of instances run on different compute nodes for service resiliency or on the same node for high performance inter-instance communications
Additionally admin users can specify and exact compute
node to run on by specifying --availability-zone
<availibility-zone>:<compute-host>
on the command line, for example to force an instance to
launch on the nova-1 compute node in
the default nova availability zone:
#nova boot --image aee1d242-730f-431f-88c1-87630c0f07ba --flavor 1 --availability-zone nova:nova-1 testhost
