88 lines
3.1 KiB
Markdown
88 lines
3.1 KiB
Markdown
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RabbitMQ `3.11.21` is a maintenance release in the `3.11.x` [release series](https://www.rabbitmq.com/versions.html).
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This release series [goes out of community support on Dec 31, 2023](https://rabbitmq.com/versions.html).
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Please refer to the upgrade section from [v3.11.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.11.0)
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if upgrading from a version prior to 3.11.0.
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This release requires Erlang 25 and supports Erlang versions up to `25.3.x`.
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[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on
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Erlang version requirements for RabbitMQ.
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### Minimum Supported Erlang Version
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As of 3.11.0, RabbitMQ requires Erlang 25. Nodes **will fail to start** on older Erlang releases.
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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/)
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across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.
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## Changes Worth Mentioning
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Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v3.11.x/release-notes).
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### Core Server
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#### Bug Fixes
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* Certain diagnostics operations during rolling upgrades from 3.10 to 3.11 could fail
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if the `listener_records_in_ets` feature flag was enabled in the middle of the upgrade.
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Contributed by @gomoripeti (CloudAMQP).
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GitHub issue: [#8984](https://github.com/rabbitmq/rabbitmq-server/pull/8984)
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* On Windows, PowerShell will no longer be used as a fallback for `handle.exe`
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for computing how many file and socket handles a node uses.
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If a user does not have `handle.exe`` installed in the `PATH`` of their Windows system,
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a message will be logged once, and then the total handles being used will be set to 0.
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PowerShell ended up being a CPU-intensive alternative that's not worth the gains
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for many installations.
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GitHub issue: [#8700](https://github.com/rabbitmq/rabbitmq-server/issues/8700)
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* Node maintenance state was not replicated to all nodes, even though it was accessible
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from any node (and for any node).
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GitHub issue: [#9011](https://github.com/rabbitmq/rabbitmq-server/pull/9011)
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### CLI Tools
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#### Enhacements
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* Some warnings were emitted even when `--formatter` was set to `json`.
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GitHub issue: [#8912](https://github.com/rabbitmq/rabbitmq-server/issues/8912)
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### HTTP AuthN/AuthZ Backend Plugin
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#### Bug Fixes
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* AMQP 1.0 client connections were refused with this plugin.
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GitHub issue: [#9043](https://github.com/rabbitmq/rabbitmq-server/issues/9043)
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### LDAP AuthN/AuthZ Backend Plugin
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#### Bug Fixes
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* AMQP 1.0 client connections were refused with this plugin.
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GitHub issue: [#9043](https://github.com/rabbitmq/rabbitmq-server/issues/9043)
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## Dependency Upgrades
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* `osiris` was upgraded to [`1.6.2`](https://github.com/rabbitmq/osiris/tags)
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## Source Code Archives
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To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.11.21.tar.xz`
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instead of the source tarball produced by GitHub.
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