Gluster users - Nov 2016 - Search Indexer for Files and Folder

Hi,
i have a distributed glusterfs with over 77TB of Folder and Files. The 
Gluster is not 24/7 online. To check if some files are exists i create, 
if the the gluster is online, a simple textfile like ls -ahls -R 
../glustfs/. A simple search with grep shows if the file is on the 
gluster or not. I think there is a better way and want to ask if someone 
uses some kind of search indexer... a good solution would be to run 
under debian or centos with an fast create and update mech of files in 
glusterfs perhaps with mysql or mariadb storage. to search offline it 
would good to use a website to search and show results.

Any Idea?
Taste