77 lines
2.4 KiB
Markdown
77 lines
2.4 KiB
Markdown
## RabbitMQ 4.0.9
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RabbitMQ `4.0.9` is a maintenance release in the `4.0.x` [release series](https://www.rabbitmq.com/release-information).
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Starting June 1st, 2024, community support for this series will only be provided to [regularly contributing users](https://github.com/rabbitmq/rabbitmq-server/blob/main/COMMUNITY_SUPPORT.md) and those
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who hold a valid [commercial support license](https://tanzu.vmware.com/rabbitmq/oss).
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It is **strongly recommended** that you read [4.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.0.1)
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in detail if upgrading from a version prior to `4.0.0`.
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### Minimum Supported Erlang Version
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This release requires Erlang 26 and supports Erlang versions up to `27.3.x`.
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[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/docs/which-erlang) has more details on
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Erlang version requirements for RabbitMQ.
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Nodes **will fail to start** on older Erlang releases.
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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/v4.0.x/release-notes).
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### Core Server
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#### Enhancements
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* Khepri: improved compatibility in mixed (Khepri) version clusters.
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GitHub issue: [#13695](https://github.com/rabbitmq/rabbitmq-server/pull/13695)
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### Management Plugin
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#### Enhancements
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* It is now possible to require authentication for the HTTP API reference page
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accessible at `/api`:
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```ini
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management.require_auth_for_api_reference = true
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```
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GitHub issue: [#13715](https://github.com/rabbitmq/rabbitmq-server/pull/13715)
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### Federation Plugin
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#### Bug Fixes
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* Federation status command and HTTP API endpoint could run into an exception.
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GitHub issue: [#13711](https://github.com/rabbitmq/rabbitmq-server/pull/13711)
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### AMQP 1.0 Erlang Client for RabbitMQ
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#### Bug Fixes
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* Concurrent queue declarations could fail with an exception.
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GitHub issue: [#13732](https://github.com/rabbitmq/rabbitmq-server/pull/13732)
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### Dependency Changes
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* `osiris` was updated to [`1.8.7`](https://github.com/rabbitmq/osiris/releases)
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* `khepri_mnesia_migration` was upgraded to [`0.7.2`](https://github.com/rabbitmq/khepri_mnesia_migration/releases)
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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-4.0.9.tar.xz`
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instead of the source tarball produced by GitHub.
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