3.7.5 a maintenance release that primarily includes bug fixes.
Upgrades and Compatibility
This release includes one potential incompatibility with earlier
3.7.x releases. It will only affect applications that use a lot (at least hundreds) of channels per connection. Previous behavior can be restored via configuration.
See 3.7.0 release notes upgrade and compatibility notes if upgrading from an earlier release.
See the Upgrading guide for general documentation on upgrades.
See RabbitMQ change log for release notes of other releases.
Topic authorization check could fail with an exception.
GitHub issue: rabbitmq-server#1538
Some runtime parameters and operator policies were rejected during definition import.
Queues could run into an exception under memory pressure.
GitHub issue: rabbitmq-server#1582
During parallel cluster formation nodes could run into an exception when inserting seed data
(default virtual host, user and permissions).
GitHub issue: rabbitmq-server#1556
ha-promote-on-failurequeue mirroring setting to augment already existing
GitHub issue: rabbitmq-server#1578
queue.deleteoperations will now force delete queues that don't have a promotable
GitHub issue: rabbitmq-server#1501
Lock contention in internal database is now much lower when a node with a lot of exclusive queues
shuts down or is otherwise considered to be unavailable by peers. This means fewer CPU cycles
spent cleaning up the exclusive queues.
GitHub issue: rabbitmq-server#1570
Default max number of channels allowed on a connection (a.k.a.
channel_max) has been lowered from
The new default is much safer and will reduce the effect application channel leaks have on node resource consumption. This is a potentially breaking change.
Systems where a lot (at least hundreds) of channels per connection are used should explicitly override
channel_maxin the config file to a higher suitable value, e.g.:
channel_max = 4000
GitHub issue: rabbitmq-server#1593
Ranch dependency has been updated to
1.5.xwhich should prevent rare cases of mass termination of client connections.
--timeout) is now only displayed for commands that will actually use it.
GitHub issue: rabbitmq-cli#236
GET /api/overviewcould fail if SNI for management plugin listener was configured.
GitHub issue: rabbitmq-management#567
rabbitmqadmincould run into an exception with certain formatting settings on Python 2.x.
GitHub issue: rabbitmq-management#568
HTTP API stats documentation used incorrect field names.
GitHub issue: rabbitmq-management#561
LDAP server-initiated connection closure was not handled gracefully by connection pool.
Kudos to Adam Gardner for doing all the hard work investigating this issue.
auth_ldap.timeoutnow defaults to 300 seconds instead of
GitHub issue: rabbitmq-auth-backend-ldap#81
group_lookup_basewas not configurable via the new style config format.
GitHub issue: rabbitmq-auth-backend-ldap#85
network_unsafefor severity value.
GitHub issue: rabbitmq-auth-backend-ldap#86
It is now possible to configure TLS options for LDAP server connections via the new style config format.
GitHub issue: rabbitmq-auth-backend-ldap#88
Federation upstream sets could run into a type error with exchange federation.
GitHub issue: rabbitmq-federation#75
Valid dynamic Shovel properties can be rejected by validation.
GitHub issue: rabbitmq-shovel#38
Shovel names are again included into (application-provided) connection names and can therefore
be seen in the management UI.
GitHub issue: rabbitmq-shovel#40
Peer Discovery AWS Plugin
China-based AWS regions now use a correct base API URI.
GitHub issue: rabbitmq-peer-discovery-aws#23
The plugin could fail to discover all nodes in a returned instance set.
GitHub issue: rabbitmq-peer-discovery-aws#20
Peer Discovery Kubernetes Plugin
GitHub issue: rabbitmq-peer-discovery-k8s#23
AMQP 1.0 Client
It wasn't possible to send some messages using QPid JMS client over AMQP 1.0.
GitHub issue: rabbitmq-amqp1.0#61
Web MQTT Plugin
New style config format was not interpreting IP addresses correctly.
GitHub issue: rabbitmq-web-mqtt#26
Web STOMP Plugin
It wasn't possible to configure TCP listener(s) in the new style config format.
GitHub issue: rabbitmq-web-stomp#82
Source code archives
Warning: The source code archive provided by GitHub only contains the source of the broker,
not the plugins or the client libraries. Please download the archive named