How to know about MySQL 'refused connections'
- by celalo
Hello,
I am using MONyog to montitor my two mysql servers. I get alert emails from MONyog when something goes wrong. There is an error I could not find out why. It says:
Connection History: Percentage of refused connections) - 66.67%
the percentage is not important, this is just about having refused connections. I get this email every half an hour. So this is like a constant situation. This must be my mistake, because I just set up those servers and there is no chance somebody else could be interfering the servers.
MONyog advices me:
Try to isolate users/applications that are using an incorrect password or trying to connect from unauthorized hosts.
A client will be disallowed to connect if it takes more than connect_timeout seconds to connect.
Set the value of log_warnings system variable to 2. This will force the MySQL server to log further information about the error.
I added log_warnings=2 to my.cnf and I enabled logging like this:
[mysqld_safe]
.
.
log_warnings=2
log-error = /var/log/mysql/error.log
.
.
.
.
[mysqld_safe]
.
log-error=/var/log/mysqld.log
.
.
I cannot see any warnings at /var/log/mysql/error.log
I can see some warnings at /var/log/mysqld.log but they are about something else.
In sum, my question is how can I detect refused connections? Please let me know if any more info is required.
Thanks in advance.
