Hi @astrava,
The main Sphinx conf file is here:
/opt/kaltura/app/configurations/sphinx/kaltura.conf
As you can see in /etc/init.d/kaltura-sphinx:
config="$APP_DIR/configurations/sphinx/kaltura.conf"
None of the Kaltura RPMs write files to /usr/local.
To see all the files shipped with kaltura-sphinx, run:
# rpm -ql kaltura-sphinx