Logs Mysql
Error log - Problems encountered starting, running, or stopping
General query log - Established client connections and statements received from clients
Binary log - Statements that change data (also used for replication)
Relay log - Data changes received from a replication master server
Slow query log - Queries that took more than seconds to execute
DDL log (metadata log) - Metadata operations performed by DDL statements
Fonte: https://dev.mysql.com/doc/refman/5.7/en/server-logs.html