Hello there o/
I’ve received a log alert this morning on my BP and Relay
“cardano.node.ChainDB:Error … Candidate contains blocks from future exceeding clock”
I checked what could be the cause, and it seems that it is related to time sync error. I checked my chrony, and everything look fine, on both my BP and Relay
Both node seem to continue to run fine after this error… So i don’t know what to think. Any suggestions/check i should do to ensure everything is fine ?
hi,
either your clock is behind OR someone wants to cheat and has set his server’s clock some time ahead.
Do you have the block nr?
thanks,
Lauris
Hello lauris, this is the full log message with slot
Candidate contains blocks from future exceeding clock skew limit: 9d900899108189fcdb6251d27368ea61a66ce66098b8347a35aa863d58367f2d at slot 73330873
Slot 73330873 hasn’t even happened yet. It is still in the future.
I searched through my logs for the same block hash and found a similar log error:
Oct 04 17:48:16 relay1 cardano-node[78427]: [relay1:cardano.node.ChainDB:Info:186] [2022-10-04 07:48:16.37 UTC] Valid candidate 9d900899108189fcdb6251d27368ea61a66ce66098b8347a35aa863d58367f2d at slot 73330873
Oct 04 17:48:16 relay1 cardano-node[78427]: [relay1:cardano.node.ChainDB:Error:186] [2022-10-04 07:48:16.37 UTC] Candidate contains blocks from future exceeding clock skew limit: 9d900899108189fcdb6251d27368ea61a66ce66098b8347a35aa863d58367f2d at slot 73330873, slots 9d900899108189fcdb6251d27368ea61a66ce66098b8347a35aa863d58367f2d@73330873
Someone is not managing their pool well and now has an orphaned block. They will get more orphaned blocks if they don’t fix their clock.
Yes, that is the conclusion i made as well, but i wasn’t sure 100% (i’m still learning a lot of things, my pool is pretty new) 
Thank you
Maybe try Setting Up chrony - CoinCashew
CHG
Already does:
Error was with another pool not operating properly: