I am using GN 2.8 and recently (last 2 months) it started losing its indexing -- a search will show only a small number of records or it will not search at all and give an error -- such that I have to do a restart after which point everything comes back (is searchable) and works as it should. It seems to be happening more and more frequently. I don't see anything in the logs that give me a clue other than when geoserver is unable to access the index.
I'm not sure what to even check for to troubleshoot. This is a production database and pretty urgent so if anyone has a suggestion please let me know. TIA
Kathy