release-notes/3.11.9.md
RabbitMQ 3.11.9 is a maintenance release in the 3.11.x release series.
Please refer to the upgrade section from v3.11.0 release notes if upgrading from a version prior to 3.11.0.
This release requires Erlang 25. RabbitMQ and Erlang/OTP Compatibility Matrix has more details on Erlang version requirements for RabbitMQ.
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 across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.
Release notes can be found on GitHub at rabbitmq-server/release-notes.
Stream delivery using RabbitMQ Stream protocol v2 could fail to start in some cases.
GitHub issue: #7118
Nodes could run into an exception with certain publishers that used QPid for client library.
GitHub issue: #7119
When discovering feature flags across the cluster, default stability level is now experimental and not stable.
GitHub issue: #7156
Reset and manually added nodes could start receiving stream replica data before its database was initialized, confusing all code paths that expected a blank node state.
GitHub issue: #7222
Fixed a minor issue with feature flag log message formatting.
GitHub issue: #7233
Improved support for the AMQP 1.0 message format (used internally by streams), in particular, when original message was published using AMQP 1.0.
GitHub issue: #7001
rabbitmqctl set_permissions_globally is a new command that sets up user permissions in all existing virtual hosts.
GitHub issue: #1000
rabbitmq-diagnostics cluster_status now lists how many CPU cores are available to individual nodes, plus a total.
GitHub issue: #7135
Limits tab failed to load when there were no limits configured.
GitHub issue: #7142
It is now possible to disable operator policy modifications. This can be necessary in RabbitMQ-as-a-Service environments.
Contributed by @illotum (AWS).
GitHub issue: #7131
Support for OAuth 2 authentication and authorization backends.
GitHub issue: #6931
MQTT nodes did not correctly remove client IDs for clients connected to a node that was in the process of being removed from the cluster.
GitHub issue: #7162
auth_oauth2.additional_scopes_key had no effect.
Contributed by @brunomedeirosdedalus.
GitHub issue: #7190
Due to a $ sign escaping differences between Make and Bazel (the newly adopted build tool),
default value of of user_dn_pattern setting was incorrect (had an extra $).
GitHub issue: #7161
None in this release.
To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.11.9.tar.xz
instead of the source tarball produced by GitHub.