RabbitMQ - v3.11.12

RabbitMQ 3.11.12 is a maintenance release in the 3.11.x release series.

Please refer to the upgrade section from v3.11.0 release notes
if upgrading from a version prior to 3.11.0.

This release requires Erlang 25.
RabbitMQ and Erlang/OTP Compatibility Matrix has more details on
Erlang version requirements for RabbitMQ.

Minimum Supported Erlang Version

As of 3.11.0, RabbitMQ requires Erlang 25. Nodes will fail to start on older Erlang releases.

Erlang 25 as our new baseline means much improved performance on ARM64 architectures, profiling with flame graphs
across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.

Changes Worth Mentioning

Release notes can be found on GitHub at rabbitmq-server/release-notes.

Core Server

Bug Fixes

• Boot time import of definitions from a conf.d-style directory failed unless
  definitions.skip_if_unchanged was set to true, for example, like in this
  rabbitmq.conf:

ini definitions.skip_if_unchanged = false definitions.import_backend = local_filesystem definitions.local.path = /path/to/RabbitMQ/definitions/conf.d/

GitHub issue: #7705

• Improved resiliency of dead-lettering.

GitHib issue: #7677

Enhancements

• When the maximum allowed number of connections to the node was limited using the connection_max key
  and the limit was reached, newly connecting client previously would run into a TCP connection timeout.

Now a more specific error will be returned to the client before connection closure.

Contributed by @SimonUnge (AWS).

GitHub issue: #7593

CLI Tools

Bug Fixes

• rabbitmqctl add_vhosts failed with an exception when --default-queue-type option was provided.

GitHub issue: #7750

Management Plugin

Bug Fixes

• HTTP API endpoint PUT /api/vhosts/{name} incorrectly used defaultqueuetype for default queue type
  key name. It is now default_queue_type, the same key as returned by GET /api/vhosts/{name}.

GitHub issue: #7734

• HTTP API will now respond with a 405 Method Not Allowed instead of a 500 when
  an unsupported method is used by the client.

Contributed by @gomoripeti (CloudAMQP).

GitHub issue: #7675

AMQP 1.0 Plugin

Bug Fixes

• Fixed AMQP 1.0 authentication issue that affected OAuth 2 token users.

GitHub issue: #7758

Dependency Upgrades

None in this release.

Source Code Archives

To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.11.12.tar.xz
instead of the source tarball produced by GitHub.