The mysql-bin.xxxx files are growing very fast I have a replication enviroment and is working fine, but today my disk going full.

I check and see that the mysql-bin.xxx files are growing very very fast (I know they contain all changes in the database(s), so naturally they will grow, but today it is not normal the way that they are growing... that is, very fast and continuously!).

Then I use mysqlbinlog to see the content of de last mysql-bin.xxx file but is to dificult to see any error.

My question

Is there some way to perceive, check, anything... where or why my mysql-bin files are growing?
Are you using replication?  If not, do you have the binlogs turned on for backups?

Do you have expire_logs_days set?  To what?

Give us some clues of what write queries are going on.

Are you UPDATEing all the rows in large tables?  If so, this is a sign of a mis-designed schema.

Are you doing massive DELETEs?  Let's discuss alternatives.