## RabbitMQ 3.7.13 RabbitMQ `3.7.13` is a maintenance release. It focuses on bug fixes and minor usability improvements. This release [**requires Erlang/OTP 20.3**](https://www.rabbitmq.com/which-erlang.html) or later. ### Erlang/OTP Compatibility Notes Per the new Erlang version support policy in effect starting with January 2019, this release [**no longer supports Erlang/OTP 19.3**](https://groups.google.com/d/msg/rabbitmq-users/G4UJ9zbIYHs/qCeyjkjyCQAJ). Make sure a [supported Erlang version](https://www.rabbitmq.com/which-erlang.html) is used before upgrading. [Provisioning Latest Erlang Releases](https://www.rabbitmq.com/which-erlang.html#erlang-repositories) explains what package repositories and tools can be used to provision latest patch versions of Erlang `20.3.x` and `21.x`. ### Compatibility Notes #### Minimum Required Erlang Version This release requires Erlang/OTP 20.3 or later. #### Upgrading to Erlang 21.x When upgrading to this release **and upgrading Erlang to 21.x** at the same time, extra care has to be taken. Since CLI tools from RabbitMQ releases older than 3.7.7 will fail on Erlang 21, RabbitMQ **must be upgraded before Erlang**. #### Upgrade Doc Guides and Change Log See [3.7.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.7.0) upgrade and compatibility notes if upgrading from an earlier release. See the [Upgrading guide](https://www.rabbitmq.com/upgrade.html) for general documentation on upgrades and [RabbitMQ change log](https://www.rabbitmq.com/changelog.html) for release notes of other releases. ### Getting Help Any questions about this release, upgrades or RabbitMQ in general are welcome on the [RabbitMQ mailing list](https://groups.google.com/forum/#!forum/rabbitmq-users). ## Changes ### Core Server #### Bug Fixes * Binding and unbinding operations could fail with a `NOT_FOUND` channel exception if binding tables got out of sync. GitHub issues: [rabbitmq/rabbitmq-server#1873](https://github.com/rabbitmq/rabbitmq-server/issues/1873), [rabbitmq/rabbitmq-server#1878](https://github.com/rabbitmq/rabbitmq-server/pull/1878), [rabbitmq/rabbitmq-server#1884](https://github.com/rabbitmq/rabbitmq-server/pull/1884) * Eliminated an accumulating inefficiency around topic-based authorisation (only topic exchanges are affected). Contributed by [Ayanda Dube](https://github.com/Ayanda-D). GitHub issue: [rabbitmq/rabbitmq-server#1886](https://github.com/rabbitmq/rabbitmq-server/pull/1886) * TCP connections could accumulate when [Proxy protocol](https://www.rabbitmq.com/networking.html#proxy-protocol) was enabled and proxy's TCP connections were closed before Proxy protocol header was received and parsed. GitHub issue: [rabbitmq/rabbitmq-server#1901](https://github.com/rabbitmq/rabbitmq-server/issues/1901) * When a queue was deleted, [internal events](https://github.com/rabbitmq/rabbitmq-event-exchange) about consumer cancellation (`consumer.deleted`) were not emitted. GitHub issue: [rabbitmq/rabbitmq-server#1892](https://github.com/rabbitmq/rabbitmq-server/issues/1892) * Connection tracking subsystem failed and logged an exception when connection was closed before it could be registered. GitHub issue: [rabbitmq/rabbitmq-server#1898](https://github.com/rabbitmq/rabbitmq-server/pull/1898) #### Enhancements * Exclusive queue property mismatch during queue declaration now produces a more helpful error message. GitHub issue: [rabbitmq/rabbitmq-server#1887](https://github.com/rabbitmq/rabbitmq-server/issues/1887) * Erlang 22 forward compatibility: support more cipher suites for config value encryption. GitHub issue: [rabbitmq/rabbitmq-common#307](https://github.com/rabbitmq/rabbitmq-common/pull/307) ### CLI Tools #### Enhancements * `rabbitmqctl shutdown` in `--wait` mode now uses node names instead of `gethostname(2)` when inferring if target node is remote. This is more reliable as it takes explicitly set node names and `ERL_INETRC` settings into account. In addition, it treats all nodes that have `@localhost` in the name as local (running on the same host). GitHub issue: [rabbitmq/rabbitmq-cli#327](https://github.com/rabbitmq/rabbitmq-cli/issues/327). * `rabbitmqctl forget_cluster_node` produces a more helpful error message when asked to remove a node with running RabbitMQ application. GitHub issue: [rabbitmq/rabbitmq-cli#323](https://github.com/rabbitmq/rabbitmq-cli/issues/323) * New command, `rabbitmqctl force_gc`, that requests fullsweep GC for all processes on the target node. GitHub issue: [rabbitmq/rabbitmq-cli#319](https://github.com/rabbitmq/rabbitmq-cli/issues/319) * All RabbitMQ CLI tools now support `--version` as well as `version` as a command. GitHub issue: [rabbitmq/rabbitmq-cli#314](https://github.com/rabbitmq/rabbitmq-cli/issues/314) ### Management Plugin #### Bug Fixes * `rabbitmqadmin`'s' `declare vhost_limit` and `delete vhost_limit` did not support the vhost parameter. GitHub issue: [rabbitmq/rabbitmq-management#667](https://github.com/rabbitmq/rabbitmq-management/issues/667) * `PUT /api/vhost-limits/{vhost}/{limit}` documentation was incorrect and used confusing language. GitHub issue: [rabbitmq/rabbitmq-management#667](https://github.com/rabbitmq/rabbitmq-management/issues/667) ### Debian and RPM Packages #### Bug Fixes * Debian and RPM packages no longer source `/etc/profile` in post installation scripts. GitHub issue: [rabbitmq/rabbitmq-server-release#93](https://github.com/rabbitmq/rabbitmq-server-release/issues/93) ### Federation Plugin #### Bug Fixes * Federation links could fail to start with an `{error, already_started} `. GitHub issue: [rabbitmq/rabbitmq-federation#84](https://github.com/rabbitmq/rabbitmq-federation/issues/84) ### Shovel Plugin #### Bug Fixes * AMQP 1.0 endpoint URIs could fail to parse. GitHub issue: [rabbitmq/rabbitmq-amqp1.0-client#23](https://github.com/rabbitmq/rabbitmq-amqp1.0-client/issues/23) ### HTTP AuthN/AuthZ Backend Plugin #### Enhnanceements * User tags are now passed to virtual host, resource and topic authorisation check endpoints as a space-separated string. Contributed by [romerod](https://github.com/romerod). GitHub issue: [rabbitmq/rabbitmq-auth-backend-http#79](https://github.com/rabbitmq/rabbitmq-auth-backend-http/issues/79) ### Trust Store Plugin #### Bug Fixes * HTTP provider did not correctly update `If-Modified-Since` request header when certificates (and thus their `Last-Modified` response header) were updated. GitHub issue: [rabbitmq/rabbitmq-trust-store#68](https://github.com/rabbitmq/rabbitmq-trust-store/issues/68) ## Source code archives **Warning**: The source code archive provided by GitHub only contains the source of the broker, not the plugins or the client libraries. Please download the archive named `rabbitmq-3.7.13.tar.gz`.