Hmm, something is up with one of my #PiHole servers, not sure what though. Right now it just periodically stops! If I ssh onto the pi and restart the service it's all fine, though I've just seen this in the FTL log

SQLite3: recovered 863 frames from WAL file /etc/pihole/pihole-FTL.db-wal (283)

Just glad I've got the secondary, didn't even notice the outage today until I tried jumping into the admin interface

@dazfuller sounds like a corruption.
@oyoun certainly seems like it's had an issue there. It's running off an SD card, so maybe now's the time I want to think about changing that out