Is there a way or a flag on the bigchaindb and tendermint logs that I can use to only log the warnings and errors instead of everything else.

Is there a way or a flag on the bigchaindb and tendermint logs that I can use to only log the warnings and errors instead of everything else. I'm working with very small instances to work out some solutions and in few days it depleted the storage memory (7gb) so I had to make a cron job to delete this logs every 3 days. But is there is something i can configure to reduce the size of those logs it would be great (specially tendermint the bigchaindb one isn't that big) Thanks