RabbitMQ 3.8.17
RabbitMQ 3.8.17 is a maintenance release that includes a security patch.
Security Patches
This release addresses an undisclosed vulnerability with CVSS 3.1 score of 3.1 (low): CVE-2021-32718.
Our team would like to thank Christian Rellmann from usd AG for responsibly disclosing
the vulnerability and helping us verify a fix.
Obtaining Packages
RabbitMQ releases are distributed via GitHub, Cloudsmith,
and PackageCloud.
Erlang/OTP Compatibility Notes
This release requires Erlang 23.2 and supports Erlang 24.
Provisioning Latest Erlang Releases explains
what package repositories and tools can be used to provision modern Erlang versions.
Upgrade and Compatibility Notes
See the Upgrading guide for general documentation on upgrades and
RabbitMQ change log for release notes of other releases.
If upgrading from a3.7.x release, see 3.8.0 release notes
upgrade and compatibility notes first.
If upgrading from a 3.6.x or older release series, first upgrade
to 3.7.27 and then to this version.
Getting Help
Any questions about this release, upgrades or RabbitMQ in general are welcome on the RabbitMQ mailing list
and RabbitMQ community Slack.
Changes Worth Mentioning
Core Server
Enhancements
-
Queue index efficiency improvements, mostly around peak memory consumption with large backlogs of small messages.
Note that some of the improvements come from more optimal defaults: those will only be
applicable to newly created virtual hosts (or new clusters). -
Consumer delivery acknowledgement timeout default has been bumped to 30 minutes (previously 15 minutes). The value
can be overridden.GitHub issue: #3033
Bug Fixes
-
A classic queue with single active consumer option enabled could run into
an exception after a restart or initial enablement of the management plugin.GitHub issue: #3072
Management Plugin
Bug Fixes
-
A combination of HTTPS (TLS) settings and advanced HTTP server settings
resulted in an exception.GitHub issue: #3039
-
External stats collector is now restarted again if it fails for any reason.
Contributed by @luos.
GitHub issue: #3040
Consistent History Exchange Plugin
Enhancements
-
When nodes are restarted, schema database tables used by this plugin are now reconciled
with cluster peers the same way RabbitMQ core does it.GitHub issue: #3067
Recent History Exchange Plugin
Enhancements
-
When nodes are restarted, schema database tables used by this plugin are now reconciled
with cluster peers the same way RabbitMQ core does it.GitHub issue: #3067
Delayed Message Exchange Plugin
Enhancements
-
When nodes are restarted, schema database tables used by this plugin are now reconciled
with cluster peers the same way RabbitMQ core does it.Contributed by @mwfriedm.
GitHub issue: rabbitmq/rabbitmq-delayed-message-exchange#163
Last Value Cache Exchange Plugin
Enhancements
-
When nodes are restarted, schema database tables used by this plugin are now reconciled
with cluster peers the same way RabbitMQ core does it.GitHub issue: rabbitmq/rabbitmq-lvc-exchange#28
Web MQTT Plugin
Bug Fixes
-
MQTT-over-WebSockets client connections were not accounted for by the file handle tracking mechanism (metric and resource alarm).
GitHub issue: #3076
Dependency Upgrades
None in this release.
Source Code Archives
To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.8.17.tar.xz
instead of the source tarball produced by GitHub.