Strange mysql logs

Hello,
System: ISPConfig 3.0.4.6 on Debian 7 (OVH)

I noticed a strange output in the logs.

Exactly once in two, running the cron job "usr / local / ispconfig / server / server.sh" causes an error in the logs of mysql (5.5.24 + dfsg-4):

Multitail on syslog and mysql.log

Code:

Dec 15 08:26:01 mail /USR/SBIN/CRON[501]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4034 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:27:01 mail /USR/SBIN/CRON[597]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:28:01 mail /USR/SBIN/CRON[679]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4070 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:29:01 mail /USR/SBIN/CRON[755]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:30:01 mail /USR/SBIN/CRON[821]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4078 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:31:01 mail /USR/SBIN/CRON[1033]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:32:01 mail /USR/SBIN/CRON[1100]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4099 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:33:01 mail /USR/SBIN/CRON[1174]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:34:01 mail /USR/SBIN/CRON[1241]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4105 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:35:01 mail /USR/SBIN/CRON[1316]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:36:01 mail /USR/SBIN/CRON[1486]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4111 Connect   Access denied for user 'root'@'localhost' (using password: NO)
Dec 15 08:37:01 mail /USR/SBIN/CRON[1561]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
Dec 15 08:38:01 mail /USR/SBIN/CRON[1638]: (root) CMD (/usr/local/ispconfig/server/server.sh > /dev/null 2>> /var/log/ispconfig/cron.log)
                 4117 Connect   Access denied for user 'root'@'localhost' (using password: NO)

I guess that it is not a problem as the task executes half the time, but I do not understand what can cause this ...

Thank you in advance,
Laurent.

 

Is your system running out of memory?

Is it a physical server or a virtual machine?

 

Hi falko,Thanks fot your interest.

Non, I don't think it's a memory problem:

Code:

root@mail:~# free
             total       used       free     shared    buffers     cached
Mem:      66084500    4684564   61399936          0     305304    3084316
-/+ buffers/cache:    1294944   64789556
Swap:      1046520          0    1046520

And yes it's a physical machine not a VM one.

I tried to have a look at all my logs, but I don't found anything...

 

Solved...

I'm so stupid...

I finally found the cause: webmin sysstats (the root password wasn't recorded in the mysql module).

Laurent.