Most MySQL-ers quickly learn to move logs out of the data directory. Hopefully the logs are being written to a different disk, on a different controller than where the data is being kept. The horror of finding you database server dead to the world because the single partition used for everything was filled up by the error log should be a thing of the past. MySQL 5.7 will give DBAs better control of log files,
As of 5.7.2, we have gained the ability to control the verbosity
of error messages with log_error_verbosity. This
system variable controls verbosity in writing error, warning, and
note messages to the error log. A value of 1 provides errors
only, 2 adds warnings, and 3 adds notes. The default value is 3.
And with that with level 3, aborted connections and access-denied
errors for new connection attempts are written to the error log.
The good ol’ log_warnings is being deprecated in
favor of the added …