Merge pull request #17755 from zzak/changelog-for-16622

Add a CHANGELOG entry for #16622 and a6de6f50 [ci skip]

guides/source/4_2_release_notes.md

@@ -311,6 +311,9 @@ Please refer to the [Changelog][railties] for detailed changes.
 *   Deprecated `Rails::Rack::LogTailer` without replacement.
     ([Commit](https://github.com/rails/rails/commit/84a13e019e93efaa8994b3f8303d635a7702dbce))
 
+*   Deprecated missing `config.log_level` for production environments.
+    ([Pull Request](https://github.com/rails/rails/pull/16622))
+
 ### Notable changes
 
 *   Introduced `web-console` in the default application Gemfile.

railties/CHANGELOG.md

+*   Deprecate different default for `log_level` in production.
+
+    *Godfrey Chan*, *Matthew Draper*
+
 *   Generated `.gitignore` excludes the whole `log/` directory, not only
     `*.log` files.