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3.12.9 release notes

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Michael Klishin 2023-11-16 02:44:08 -05:00
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RabbitMQ `3.12.9` is a maintenance release in the `3.12.x` [release series](https://www.rabbitmq.com/versions.html).
Please refer to the upgrade section from the [3.12.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.12.0)
if upgrading from a version prior to 3.12.0.
This release requires Erlang 25 and supports Erlang versions up to `26.1.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 3.12.0, RabbitMQ requires Erlang 25. Nodes **will fail to start** on older Erlang releases.
Users upgrading from 3.11.x (or older releases) on Erlang 25 to 3.12.x on Erlang 26
(both RabbitMQ *and* Erlang are upgraded at the same time) **must** consult
the [v3.12.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.12.0) first.
## Changes Worth Mentioning
Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v3.12.x/release-notes).
### 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)
### MQTT Plugin
#### Bug Fixes
* Avoids an unnecessary warning in the logs.
GitHub issue: [#9885](https://github.com/rabbitmq/rabbitmq-server/pull/9885)
### 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)
### Management Plugin
#### Enhancements
* Nodes that have OAuth 2 enabled now redirect the user to the original landing page (if any)
after successful login with the IDP.
Contributed by @dukex.
GitHub issue: [#9851](https://github.com/rabbitmq/rabbitmq-server/pull/9851)
## Dependency Upgrades
None in this release.
## Source Code Archives
To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.12.9.tar.xz`
instead of the source tarball produced by GitHub.