MySQL Server Logs

Log Type	Information Written to Log
The error log	Problems encountered starting, running, or stopping `mysqld`
The general query log	Established client connections and statements received from clients
The binary log	All statements that change data (also used for replication)
The slow query log	All queries that took more than `long_query_time` seconds to execute or did not use indexes

Force mysqld to close and reopen the log files by flushing the logs.
- Log flushing occurs with:
  - The FLUSH LOGS statement
  - Executing mysqladmin flush-logs
  - Executing mysqladmin refresh

If using MySQL replication capabilities, slave replication servers maintain additional log files called relay logs.

What does the error log contain?