Pihole runs stable for a long time but suddenly devices start cutting out and usually get DNS couldn't be resolved error.
I noticed an overload (above 150%) so I restarted the FTL service and moved the pihole-FTL.db to pihole-FTL.db.old but unfortunately didn't work and the problem still exists.
What works for me so far is to restart the network-manager service on my device, flush the caches and connect again. Then, works for a couple of minutes and cuts off again.
How long is for a long time? I think it's possible your sd card is dying and/or there's some other parts of your hardware dying if the long time is over 2 years.
But let's see what they, who can see your debug, can find from there.
Thanks for the reply.
I would say less than a year but was pretty stable. These problems just started to happen and I have no clue. I just disabled it for now till I figure out what's wrong with it.