Watchdog module issue with IMAP/POP3 Server monitoring

Created:

2016-11-16 13:06:57 UTC

Modified:

2017-02-03 22:33:21 UTC

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Watchdog module issue with IMAP/POP3 Server monitoring

Symptoms

There are two basic types of situations when this issue occurs in Plesk Panel:

  1. The watchdog module fails to activate IMAP/POP3 Server monitoring.

  2. The watchdog module fails to start when IMAP/POP3 Server monitoring is activated.

Case 1

When trying to activate IMAP/POP3 Server monitoring by the Watchdog, it fails and says the service is stopped but it can be started.

# less /usr/local/psa/var/modules/watchdog/log/monit.log
...
'courier_imap' trying to restart
'courier_imap' stop: /etc/init.d/courier-imap
'courier_imap' start: /etc/init.d/courier-imap
'courier_imap' failed, cannot open a connection to INET[127.0.0.1:110]
Collector: cannot open a connection to http://127.0.0.1:2912/ -- Transport endpoint is not connected
Collector: no server available -- aborting message
...

Case 2

When trying to enable the Watchdog module, the following error appears in logs:

# tail -f /var/log/messages
...
[213944.684542] monit[17488]: segfault at 800b2cc ip 0805d0d8 sp bfffda80 error 4 in monit[8048000+45000]
[213944.927657] monit[17495]: segfault at 800b2cc ip 0805d0d8 sp bfffe080 error 4 in monit[8048000+45000]
...
# tail -f /usr/local/psa/var/modules/watchdog/log/monit.log
...
Starting monit daemon with http interface at [127.0.0.1:2911]
Starting monit HTTP server at [127.0.0.1:2911]
monit HTTP server started
IMAP error:
...

Cause

The courier-imap was modified with the Micro-Update.

Resolution

The file /usr/local/psa/admin/bin/modules/watchdog/monit needs to be replaced with the attached one that corresponds with your OS and Architecture.

Note: Back up the original file and rename it to monit.orig .

This problem has been fixed in Parallels Panel 10.4. Consider upgrading Parallels Panel on your server.

Debian-5.0-i386

Debian-5.0-x86_64

Debian-6.0-i386

Debian-6.0-x86x64

Ubuntu-8.04-i386

Ubuntu-8.04-x86_64

Ubuntu-10.04-i386

Ubuntu-10.04-x86_64

CentOS-5-i386

CentOS-5-x86_64

CentOS-6-i386

CentOS-6-x86_64

RedHat-el5-i386

RedHat-el5-x86_64

RedHat-el6-i386

RedHat-el6-x86_64

SuSE-11.3-i386

SuSE-11.3-x86_64

SuSE-11.4-x86_64

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