v.22.9New Feature

Added changeable_in_readonly settings constraint

Official CH changelog text
Added new settings constraint writability kind changeable_in_readonly. #40631 (Sergei Trifonov).
Introduced a new settings constraint writability kind called changeable_in_readonly.

Why it matters

This feature allows certain settings to be modifiable even when ClickHouse is in readonly mode, enabling more flexible configuration management without fully disabling setting changes.

How to use it

Users can apply the changeable_in_readonly constraint to specific settings in their configuration to allow changes while the server is running in readonly mode.

Related resources

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