From: John G. Heim (jheimmath.wisc.edu)
Date: Thu Sep 25 2008 - 15:28:24 CDT

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My web server is running drupal. Yesterday it started giving error messages
instead of displaying the hom page. The error says, "The MySQL error was:
Host 'web1.math.wisc.edu' is blocked because of many connection errors;
unblock with 'mysqladmin flush-hosts'."

I want to find out why that happened. I'm running the mysql debian package
for etch (stable). It installs mysql 5.0. The default my.cnf says this:

# Be aware that this log type is a performance killer.
#log = /var/log/mysql/mysql.log
# Error logging goes to syslog. This is a Debian improvement :)

Two questions:
1. Is it a performance killer?
2. There was nothing in the system log. The only messages about mysql were
from restarting the server.

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