Backward_Incompatible_Changes.md

Backward Incompatible Changes

This is actually not a backward incompatible, but changes that you must know about!

• Add prefix for files under config.d directory

Add prefix for files under config.d directory

In 551fd236e1cc495df260548ca8bcac35ad08c67b files that are shipped within this role (some default overrides), started to have prefix 00-, this is required to load them first, so that anything else will override them. But there is no task to remove old files, so it is your responsibility to do this.

Here is an example onelinear for this:

ls -1d /etc/clickhouse-server/config.d/* | grep /00- | sed 's/00-//g' | xargs -r rm

Note: that strictly speaking nothing will be broken even if you will not remove them, but there will be duplicated configuration files, and overrides may not work as described in the documentation

See also: Server configuration directives overrides order