Manual:$wgLocalDatabases

Details
An array of database names. E.g.,

This is used for e.g. $wgConf (SiteConfiguration) and $wgConf->wikis should be the same as $wgLocalDatabases.

It is needed to run a wiki family, for example by using Extension:CentralAuth.

User rights on other wikis on this site can be administered from a single developer account (permission: userrights-interwiki).