RabbitMQ 3.7.11-rc.2

RabbitMQ 3.7.11-rc.2

RabbitMQ 3.7.11-rc.2 is a preview of a maintenance release. It focuses on bug fixes and
minor usability improvements.

Erlang/OTP Compatibility Notes

Per the new Erlang version support policy in effect starting with January 2019,
this release drops support for Erlang/OTP 19.3.
Make sure a supported Erlang version is used
before upgrading.

Compatibility Notes

• This release requires Erlang/OTP 20.3 or later.
• Default CLI command exit code has changed from 70 () to 69 (). This does not affect all commands and all
  failure e.g. argument validation

Upgrading to Erlang 21.x

When upgrading to this release and upgrading Erlang to 21.x at the same time, extra care has to be taken.
Since CLI tools from RabbitMQ releases older than 3.7.7 will fail on Erlang 21, RabbitMQ must be upgraded before Erlang.

Documentation Guides and Change Log

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 and
RabbitMQ change log for release notes of other releases.

Changes

Core Server

Erlang Version Requirement

• This release requires Erlang/OTP 20.3.x or 21.x.

  GitHub issue: rabbitmq/rabbitmq-server#1820

Bug Fixes

• Number of socket file descriptors used is now correctly incremented.

  GitHub issue: rabbitmq/rabbitmq-management#652

• Configuration schema file was not copied during upgrades.

  GitHub issues: rabbitmq/rabbitmq-server#1843

• First heartbeat frame on a successfully negotiated connection is now sent after a half of the negotiated heartbeat
  timeout. Previously it was sent after a complete timeout. Since most connections have other activity after
  connection handshake is complete, this didn't have any visible effects on most systems.

  GitHub issue: rabbitmq/rabbitmq-common#293

CLI Tools

Enhancements

• Several new rabbitmq-diagnostics commands useful for diagnostics and health checks.

  GitHub issue: rabbitmq/rabbitmq-cli/issues/292

Management Plugin

Enhancements

• rabbitmqadmin now defines an exception not available in Python 2, making TCP connection
  error reporting more similar with that on Python 3.

  GitHub issue: rabbitmq/rabbitmq-management#647

AWS Peer Discovery Plugin

Bug Fixes

• When an EC2 API endpoint could not be reached, the plugin terminated in a way that
  brought down the entire node with it.

  GitHib issue: rabbitmq/rabbitmq-peer-discovery-aws#25

STOMP Plugin

Enhancements

• Avoid using a private socket API function that's likely going away in Erlang 22.

  GitHub issue: rabbitmq/rabbitmq-stomp#128

MQTT Plugin

Enhancements

• Avoid using a private socket API function that's likely going away in Erlang 22.

  GitHub issue: rabbitmq/rabbitmq-mqtt#171

AuthN/AuthZ Backend Cache Plugin

Bug Fixes

• The new style config format did not support auth_cache.cache_refusals

  GitHub issue: rabbitmq/rabbitmq-auth-backend-cache#17

Erlang Client

Enhancements

• Avoid using a private socket API function that's likely going away in Erlang 22.

  GitHub issue: rabbitmq/rabbitmq-erlang-client#114

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 rabbitmq-3.7.11.tar.gz.