Merge pull request #9959 from rabbitmq/mk-3.11.26-release-notes

3.11.26 release notes

Author: michaelklishin

release-notes/3.11.26.md

@@ -0,0 +1,87 @@
+RabbitMQ `3.11.26` is a maintenance release in the `3.11.x` [release series](https://www.rabbitmq.com/versions.html).
+This release series [goes out of community support on Dec 31, 2023](https://rabbitmq.com/versions.html).
+
+Please refer to the upgrade section from [v3.11.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.11.0)
+if upgrading from a version prior to 3.11.0.
+
+This release requires Erlang 25 and supports Erlang versions up to `25.3.x`.
+[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) 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](https://blog.rabbitmq.com/posts/2022/05/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](https://github.com/rabbitmq/rabbitmq-server/tree/v3.11.x/release-notes).
+
+
+### Core Broker
+
+#### Bug Fixes
+
+ * When a topic permission was deleted, an [internal event](https://rabbitmq.com/logging.html#internal-events) of type `permission.deleted`
+   was emitted in some cases, instead of `topic.permission.deleted`.
+
+   Investigated by @bedia.
+
+   GitHub issue: [#9937](https://github.com/rabbitmq/rabbitmq-server/issues/9937)
+
+
+### AMQP 1.0 Plugin
+
+#### Bug Fixes
+
+ * Correctly block publishing AMQP 1.0 connections when a [resource alarm](https://rabbitmq.com/alarms.html) is in effect.
+
+   GitHub issue: [#9955](https://github.com/rabbitmq/rabbitmq-server/pull/9955)
+
+
+### Shovel Plugin
+
+#### Bug Fixes
+
+ * Shovels on `3.12.8` nodes failed during a rolling cluster upgrade due to internal
+   identifier format changes.
+
+   Starting with this release, both old and new formats are supported for upgrade safety.
+
+   GitHub issue: [#9894](https://github.com/rabbitmq/rabbitmq-server/pull/9894)
+
+
+### Grafana Dashboard
+
+#### Enhancements
+
+ * [Global counters for producers](https://github.com/rabbitmq/rabbitmq-server/pull/3127) are now available in the dashboard.
+
+   Contributed by @johanrhodin (CloudAMQP)
+
+   GitHub issue: [#9846](https://github.com/rabbitmq/rabbitmq-server/pull/9846)
+
+
+### CLI Tools
+
+#### Enhancements
+
+ * `rabbitmq-diagnostics list_policies_that_match [queue name]` is a new command
+   that simplifies troubleshooting of policy conflicts.
+
+   GitHub issue: [#9916](https://github.com/rabbitmq/rabbitmq-server/pull/9916)
+
+
+## Dependency Upgrades
+
+ None in this release.
+
+
+## Source Code Archives
+
+To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.11.26.tar.xz`
+instead of the source tarball produced by GitHub.