release-notes/3.10.8.md
RabbitMQ 3.10.8 is a maintenance release in the 3.10.x release series.
Please refer to the upgrade section from v3.10.0 release notes if upgrading from a version prior to 3.10.0.
This release requires Erlang 24.2 and supports Erlang 25. RabbitMQ and Erlang/OTP Compatibility Matrix has more details on Erlang version requirements for RabbitMQ.
Erlang 23 support has reached its end of support.
Starting with this release, RabbitMQ requires Erlang 24.2 or later versions. 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.
Nodes now default to 65536 concurrent client connections instead of using the effective kernel open file handle limit. Users who want to override this default, that is, have nodes that should support more concurrent connections and open files, now have to perform an additional configuration step:
systemd or similar tooling) for the OS user used by RabbitMQ to 100KERL_MAX_PORTS environment variable to 100KThis change was introduced because of a change in several Linux distributions: they now use a default open file handle limit so high, they cause a significant (say, 1.5 GiB) memory preallocated the Erlang runtime.
RHEL 9 and CentOS Stream 9 are examples of such distributions. The new default comes from modern systemd.
See rabbitmq/rabbitmq-server#5684 and docker-library/rabbitmq#545 for details.
Release notes can be found on GitHub at rabbitmq-server/release-notes.
When a virtual host is added, it now can be configured with default queue type.
In part contributed by @adamncasey.
Free disk space monitor robustness improvements.
GitHub issue: #5739
Force GC after definition import to reduce peak memory load by mostly idle nodes that import a lot of definitions.
GitHub issue: #5550
Stopped emitting some internal events no part of the system consumes in 3.10.x.
GitHub issue: #5737
Reduced log noise from exceptions connections could run into when a client was closing its connection end concurrently with other activity.
GitHub issue: #5539
rabbitmq-env-conf.bat on Windows could fail to load when its path contained spaces.
GitHub issue: #5542
Stream declaration could run into an exception when stream parameters failed validation.
GitHub issue: #5487
Some counters on the Overview page have been moved to global counters introduced in RabbitMQ 3.9.
GitHub issue: #5463
Fixed an issue with hostname verification for TLS-enabled connections.
GitHub issue: #5531
A way to configure an authentication timeout, much like in some other protocols RabbitMQ supports.
Contributed by @gomoripeti.
GitHub issue: #5755
Avoid an exception when MQTT client closes TCP connection before server could fully
process a CONNECT frame sent earlier by the same client.
GitHub issue: #5658
A way to configure an authentication timeout, much like in some other protocols RabbitMQ supports.
Contributed by @gomoripeti.
GitHub issue: #5755
Service startup is now optional. More environment variables are respected by the installer.
Contributed by @inikulshin.
GitHub issues: rabbitmq/rabbitmq-packaging#15
To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.10.8.tar.xz
instead of the source tarball produced by GitHub.