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authorBrendan Abolivier <babolivier@matrix.org>2022-03-25 10:56:18 +0100
committerGitHub <noreply@github.com>2022-03-25 10:56:18 +0100
commit5859e2fe0cd23228192de7c40b8b1c760efa77d2 (patch)
treedb8efdc5a7a0550ef498d2b8e556b596fab7103f /docs/upgrade.md
parentRe-enable test concurrency on Complement (#12283) (diff)
downloadsynapse-5859e2fe0cd23228192de7c40b8b1c760efa77d2.tar.xz
Mention the new behaviour on unsafe database locale in the upgrade notes (#12288)
Co-authored-by: Shay <hillerys@element.io>
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@@ -99,6 +99,13 @@ experimental_features:
   groups_enabled: false
 ```
 
+## Change in behaviour for PostgreSQL databases with unsafe locale
+
+Synapse now refuses to start when using PostgreSQL with non-`C` values for `COLLATE` and
+`CTYPE` unless the config flag `allow_unsafe_locale`, found in the database section of
+the configuration file, is set to `true`. See the [PostgreSQL documentation](https://matrix-org.github.io/synapse/latest/postgres.html#fixing-incorrect-collate-or-ctype)
+for more information and instructions on how to fix a database with incorrect values.
+
 # Upgrading to v1.55.0
 
 ## `synctl` script has been moved