Key	Documentation
tcp_listeners	List of ports on which to listen for AMQP connections (without SSL). Can contain integers (meaning "listen on all interfaces") or tuples such as {"127.0.0.1", 5672} to listen on one or more interfaces. Default: [5672]
num_tcp_acceptors	Number of Erlang processes that will accept connections for the TCP listeners. Default: 10
handshake_timeout	Maximum time for AMQP 0-8/0-9/0-9-1 handshake (after socket connection and SSL handshake), in milliseconds. Default: 10000
ssl_listeners	As above, for SSL connections. Default: []
num_ssl_acceptors	Number of Erlang processes that will accept connections for the SSL listeners. Default: 1
ssl_options	SSL configuration. See the . Default: []
ssl_handshake_timeout	SSL handshake timeout, in milliseconds. Default: 5000
vm_memory_high_watermark	Memory threshold at which the flow control is triggered. See the documentation. Default: 0.4
vm_memory_high_watermark_paging_ratio	Fraction of the high watermark limit at which queues start to page messages out to disc to free up memory. See the documentation. Default: 0.5
disk_free_limit	Disk free space limit of the partition on which RabbitMQ is storing data. When available disk space falls below this limit, flow control is triggered. The value may be set relative to the total amount of RAM (e.g.{mem_relative, 1.0}). The value may also be set to an integer number of bytes. Or, alternatively, in information units (e.g "50MB"). By default free disk space must exceed 50MB. See the documentation. Default: 50000000
log_levels	Controls the granularity of logging. The value is a list of log event category and log level pairs. The level can be one of 'none' (no events are logged), 'error' (only errors are logged), 'warning' (only errors and warning are logged), 'info' (errors, warnings and informational messages are logged), or 'debug' (errors, warnings, informational messages and debugging messages are logged). At present there are four categories defined. Other, currently uncategorised, events are always logged. The categories are: channel - for all events relating to AMQP channels connection - for all events relating to network connections federation - for all events relating to mirroring - for all events relating to Default: [{connection, info}]
frame_max	Maximum permissible size of a frame (in bytes) to negotiate with clients. Setting to 0 means "unlimited" but will trigger a bug in some QPid clients. Setting a larger value may improve throughput; setting a smaller value may improve latency. Default: 131072
channel_max	Maximum permissible number of channels to negotiate with clients. Setting to 0 means "unlimited". Using more channels increases memory footprint of the broker. Default: 0
channel_operation_timeout	Channel operation timeout in milliseconds (used internally, not directly exposed to clients due to messaging protocol differences and limitations). Default: 15000
heartbeat	Value representing the heartbeat delay, in seconds, that the server sends in the connection.tune frame. If set to 0, heartbeats are disabled. Clients might not follow the server suggestion, see the for more details. Disabling heartbeats might improve performance in situations with a great number of connections, but might lead to connections dropping in the presence of network devices that close inactive connections. Default: 60 (580 prior to release 3.5.5)
default_vhost	Virtual host to create when RabbitMQ creates a new database from scratch. The exchange amq.rabbitmq.logwill exist in this virtual host. Default: <<"/">>
default_user	User name to create when RabbitMQ creates a new database from scratch. Default: <<"guest">>
default_pass	Password for the default user. Default: <<"guest">>
default_user_tags	Tags for the default user. Default: [administrator]
default_permissions	to assign to the default user when creating it. Default: [<<".">>, <<".">>, <<".*">>]
loopback_users	List of users which are only permitted to connect to the broker via a loopback interface (i.e. localhost). If you wish to allow the default guest user to connect remotely, you need to change this to []. Default: [<<"guest">>]
cluster_nodes	Set this to cause clustering to when a node starts for the very first time. The first element of the tuple is the nodes that the node will try to cluster to. The second element is either disc or ram and determines the node type. Default: {[], disc}
server_properties	List of key-value pairs to announce to clients on connection. Default: []
collect_statistics	Statistics collection mode. Primarily relevant for the management plugin. Options are: none (do not emit statistics events) coarse (emit per-queue / per-channel / per-connection statistics) fine (also emit per-message statistics) You probably don't want to change this yourself. Default: none
collect_statistics_interval	Statistics collection interval in milliseconds. Primarily relevant for the . Default: 5000
auth_mechanisms	to offer to clients. Default: ['PLAIN', 'AMQPLAIN']
auth_backends	List of to use. This list can contain names of modules (in which case the same module is used for both authentication and authorisation), or 2-tuples like {ModN, ModZ} in which caseModN is used for authentication and ModZ is used for authorisation. In the 2-tuple case, ModZ can be replaced by a list, all the elements of which must confirm each authorisation query, e.g. {ModN, [ModZ1, ModZ2]}. This allows authorisation plugins to mix-in and provide additional security constraints. Other databases than rabbit_auth_backend_internal are available through . Default: [rabbit_auth_backend_internal]
reverse_dns_lookups	Set to true to have RabbitMQ perform a reverse DNS lookup on client connections, and present that information through rabbitmqctl and the management plugin. Default: false
delegate_count	Number of delegate processes to use for intra-cluster communication. On a machine which has a very large number of cores and is also part of a cluster, you may wish to increase this value. Default: 16
trace_vhosts	Used internally by the . You shouldn't change this. Default: []
tcp_listen_options	Default socket options. You probably don't want to change this. Default: [{backlog, 128}, {nodelay, true}, {linger, {true,0}}, {exit_on_close, false}]
hipe_compile	Set to true to precompile parts of RabbitMQ with HiPE, a just-in-time compiler for Erlang. This will increase server throughput at the cost of increased startup time. You might see 20-50% better performance at the cost of a few minutes delay at startup. These figures are highly workload- and hardware-dependent. HiPE support may not be compiled into your Erlang installation. If it is not, enabling this option will just cause a warning message to be displayed and startup will proceed as normal. For example, Debian / Ubuntu users will need to install the erlang-base-hipe package. HiPE is not available at all on some platforms, notably including Windows. HiPE has known issues in Erlang/OTP versions prior to 17.5. Using a recent Erlang/OTP version is highly recommended for HiPE. Default: false
cluster_partition_handling	How to handle network partitions. Available modes are: ignore pause_minority {pause_if_all_down, [nodes], ignore \| autoheal}where [nodes] is a list of node names (ex: ['rabbit@node1', 'rabbit@node2']) autoheal See the for more information. Default: ignore
cluster_keepalive_interval	How frequently nodes should send keepalive messages to other nodes (in milliseconds). Note that this is not the same thing as ; missed keepalive messages will not cause nodes to be considered down. Default: 10000
queue_index_embed_msgs_below	Size in bytes of message below which messages will be embedded directly in the queue index. You are advised to read the documentation before changing this. Default: 4096
msg_store_index_module	Implementation module for queue indexing. You are advised to read the documentation before changing this. Default: rabbit_msg_store_ets_index
backing_queue_module	Implementation module for queue contents. You probably don't want to change this. Default: rabbit_variable_queue
msg_store_file_size_limit	Tunable value for the persister. You almost certainly should not change this. Default: 16777216
mnesia_table_loading_timeout	Timeout used when waiting for Mnesia tables in a cluster to become available. Default: 30000
queue_index_max_ journal_entries	Tunable value for the persister. You almost certainly should not change this. Default: 65536
queue_master_locator	Queue master location strategy. Available strategies are: <<"min-masters">> <<"client-local">> <<"random">> See the for more information. Default: <<"client-local">>