Description of configuration options for zeromq

Configuration option=Default value	Description
rpc_zmq_bind_address=*	(StrOpt) ZeroMQ bind address. Should be a wildcard (*), an ethernet interface, or IP. The "host" option should point or resolve to this address.
rpc_zmq_contexts=1	(IntOpt) Number of ZeroMQ contexts, defaults to 1
rpc_zmq_host=docwork	(StrOpt) Name of this node. Must be a valid hostname, FQDN, or IP address. Must match "host" option, if running Nova.
rpc_zmq_ipc_dir=/var/run/openstack	(StrOpt) Directory for holding IPC sockets
rpc_zmq_matchmaker=nova.openstack.common.rpc.matchmaker.MatchMakerLocalhost	(StrOpt) MatchMaker driver
rpc_zmq_port=9501	(IntOpt) ZeroMQ receiver listening port
rpc_zmq_topic_backlog=None	(IntOpt) Maximum number of ingress messages to locally buffer per topic. Default is unlimited.