Thread:Project:Support desk/Trouble uploading after installation/reply (20)

I should have been clearer: read https://www.mediawiki.org/wiki/Manual:Configuring_file_uploads#Check_directory_security

That talks about chowning to www-data:www-data.

On my system (CentOS 6.5) it should be apache:apache.

Note that a chgrp isn't necessary since chown incorporates that functionality. An old-fashioned notation for chown used. instead of : to separate the owner from the group.