Mögliche Lösung
Hi,
ich will mal vorsichtig sagen, dass ich eventuell eine ->echte Lösung<- für diese beiden Probleme habe, wer das mal getestet hat, bitte Feedback an mich.
Ich habe das mehr oder weniger zufällig aus einer anderen Ecke des SWsoft Plesk Support (USA).
2 problems related to mail in plesk 7.5.4 on debian: watchdog module and inetd <-> qmail
problem one: the watchdog module
setup:
- Debian 3.1 (probaly applies to 3.0 too, if setup was done manual)
- Plesk 7.5.4
- Watchdog Module
observed problem:
qmail gets killed by watchdog module and a race condition leads to service outage
problem 2: qmail dies simply on it's own
setup:
- Debian 3.1 (probaly applies to 3.0 too, if setup was done manual)
- usage of classic inetd for qmail due to debian defaults
- Plesk 7.5.4
observed problem:
qmail just dies on (highee volume/low resource) systems, no traces found
solution suggested for problem 1:
- find out which scripts are called by the watchdog module for qmail checks
- disable all watchdog module settings for qmail
- delete the scripts used for qmail checks (not the templates)
- apply patch to watchdog module template
- setup new watchdog job for qmail
- check that the new generated script has the updates from the patched template
(only if that fails-> get the source of the plesk installation package, remove the watchdog module completely using dpkg, reinstall the watchdog module, appy patch, setup qmail monitoring, check script for updates from patch)
- > if qmail is started from inetd (not xinetd) continue with next
solution suggested for problem 2:
- replace inetd with xinetd
-> the qmail inetd IPC does not work properly in this setup, xinetd removes the blocker and leads to a defined state under all conditions
Und hier der Patch für das watchdog module template:
<code>
--- monitrc.tpl.orig 2006-01-26 15:22:34.000000000 +0100
+++ monitrc.tpl 2006-01-26 16:21:51.769476416 +0100
@@ -62,18 +62,27 @@
mode <apache::mode>
# Qmail
-check host qmail with address localhost
- start = "<qmail::start>"
- stop = "<qmail::stop>"
- if failed host localhost port 25 protocol smtp with timeout <qmail::connection_timeout> seconds then <qmail::action>
- [<rem qmail::timeout>]if <qmail::timeout::restarts> restarts within <qmail::timeout::cycles> cycles then timeout
- every <qmail::every cycles> cycles
- [<rem qmail::alert::nonwork>]alert <qmail::alert::nonwork::to> { connection } [<qmail::alert::nonwork::mail-format>]
- [<rem qmail::alert::exec>]alert <qmail::alert::exec::to> { exec } [<qmail::alert::exec::mail-format>]
- [<rem qmail::alert::timeout>]alert <qmail::alert::timeout::to> { timeout } [<qmail::alert::timeout::mail-format>]
- alert <default email to> {invalid}
- mode <qmail::mode>
-
+check process qmail
+ with pidfile "/var/run/qmail.pid"
+ start = "<qmail::start>"
+ stop = "<qmail::stop>"
+ [<rem qmail::timeout>]if <qmail::timeout::restarts> restarts within <qmail::timeout::cycles> cycles then timeout
+ every <qmail::every cycles> cycles
+ [<rem qmail::alert::exec>]alert <qmail::alert::exec::to> { exec } [<qmail::alert::exec::mail-format>]
+ [<rem qmail::alert::timeout>]alert <qmail::alert::timeout::to> { timeout } [<qmail::alert::timeout::mail-format>]
+ alert <default email to> {invalid}
+ mode <qmail::mode>
+
+# Qmail-smtpd
+check qmail_smtpd with address localhost
+ if failed host localhost port 25 protocol smtp with timeout <qmail::connection_timeout> seconds then alert
+ [<rem qmail::timeout>]if <qmail::timeout::restarts> restarts within <qmail::timeout::cycles> cycles then timeout
+ every <qmail::every cycles> cycles
+ [<rem qmail::alert::nonwork>]alert <qmail::alert::nonwork::to> { connection } [<qmail::alert::nonwork::mail-format>]
+ [<rem qmail::alert::timeout>]alert <qmail::alert::timeout::to> { timeout } [<qmail::alert::timeout::mail-format>]
+ alert <default email to> {invalid}
+ mode <qmail::mode>
+
# Courier-IMAP
check process courier-imap
with pidfile "/var/run/imapd.pid"
</code>
alles zwischen den code Tags in eine Datei (patch.diff) speichern und im Ordner anwenden, in dem die Datei monitrc.tpl, also das Templatefile des Monitoring Skripts, liegt:
cd /opt/psa/....... (habe gerade kein plesk da zum gucken, "find / -name 'monitrc.tpl'" sollte aber helfen)
patch < /patch.diff -p0
Ich denke das SWsoft Debian irgendwie nicht mag, so sehr wie die das schleifen lassen, das wird bestimmt noch ewig dauern, bis da ein Upate für kommt.
Gruß MeMeD
