root
/
rabbitmq-server
mirror of https://github.com/rabbitmq/rabbitmq-server.git
1
0
Fork 0
Code Issues Actions 1 Packages Projects Releases Wiki Activity

3.12.0 release notes: a warning on those upgrading to 3.12 and Erlang 26 at the same time

This commit is contained in:
Michael Klishin 2023-06-02 15:02:48 +04:00
parent 6d2e497382
commit 53e992febb
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
release-notes/3.12.0.md
View File

@ -59,9 +59,19 @@ similarly to how [3.11.0 required all feature flags introduced before 3.9.0](htt
If the feature flags are not enabled, RabbitMQ 3.12 and later nodes will refuse to start.
### Upgrading to Erlang 26 and RabbitMQ 3.12 at the Same Time
When upgrading from 3.11.x on Erlang 25 to 3.12.x on Erlang 26,
the cluster must be on **at least version 3.11.17** for a [safe upgrade](https://github.com/rabbitmq/ra/pull/369) of quorum queues.
Alternatively, it is possible to upgrade all nodes to 3.12.0 on Erlang 25 from an earlier
3.11.x version, then upgrade the 3.12 cluster to Erlang 26.
### Mixed version cluster compatibility
RabbitMQ 3.12.0 nodes can run alongside `3.11.x` nodes. `3.12.x`-specific features can only be made available when all nodes in the cluster
RabbitMQ 3.12.0 nodes can run alongside `3.11.x` nodes starting with `3.11.17`.
`3.12.x`-specific features can only be made available when all nodes in the cluster
upgrade to 3.12.0 or any other patch release in the new series.
While operating in mixed version mode, some aspects of the system may not behave as expected. The list of known behavior changes is covered below.
@ -71,7 +81,6 @@ Mixed version clusters are a mechanism that allows rolling upgrade and are not m
periods of time (no more than a few hours).
## Compatibility Notes
### More Feature Flags Gratuate to Core Features ("Always Enabled")