openstack-manuals/doc/config-reference/source/tables/neutron-zeromq.rst

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Description of ZeroMQ configuration options
Configuration option = Default value Description
[DEFAULT]
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_bind_port_retries = 100 (IntOpt) Number of retries to find free port number before fail with ZMQBindError.
rpc_zmq_concurrency = eventlet (StrOpt) Type of concurrency used. Either "native" or "eventlet"
rpc_zmq_contexts = 1 (IntOpt) Number of ZeroMQ contexts, defaults to 1.
rpc_zmq_host = localhost (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 = redis (StrOpt) MatchMaker driver.
rpc_zmq_max_port = 65536 (IntOpt) Maximal port number for random ports range.
rpc_zmq_min_port = 49152 (PortOpt) Minimal port number for random ports range.
rpc_zmq_topic_backlog = None (IntOpt) Maximum number of ingress messages to locally buffer per topic. Default is unlimited.
use_pub_sub = True (BoolOpt) Use PUB/SUB pattern for fanout methods. PUB/SUB always uses proxy.
zmq_target_expire = 120 (IntOpt) Expiration timeout in seconds of a name service record about existing target ( < 0 means no timeout).