Re: [monit-dev] Assertion failure in 4.10.1

[Brian Candler]

On Tue, Mar 25, 2008 at 10:23:34PM +0100, Martin Pala wrote:
> the problem is fixed in CVS ... it was triggered by the combination of 
> the "if changed checksum" test and "restart" action which freed the 
> checksum before xstrdup was called.

Thank you. It works fine now: the restart action propagates upwards on a
change of the config file, and everything remains monitored.

I only notice a minor anomoly now, which is spurious blank lines in syslog:

Mar 26 08:25:25 localhost monit[24709]: 'testapp_pen.conf' checksum was changed 
for /etc/pen.d/testapp.conf
Mar 26 08:25:25 localhost monit[24709]: 'testapp_pen.conf' trying to restart
Mar 26 08:25:25 localhost monit[24709]: 'testapp_pen' stop:
Mar 26 08:25:25 localhost monit[24709]: /bin/bash
Mar 26 08:25:25 localhost monit[24709]:
Mar 26 08:25:25 localhost monit[24709]: -c
Mar 26 08:25:25 localhost monit[24709]:
Mar 26 08:25:25 localhost monit[24709]: kill -s SIGTERM `cat 
/var/run/pen/testapp.pid`
Mar 26 08:25:25 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: 'testapp_pen' start:
Mar 26 08:25:26 localhost monit[24709]: /usr/bin/pen
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: -F
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: /etc/pen.d/testapp.conf
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: -u
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: nobody
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: -p
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: /var/run/pen/testapp.pid
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: -C
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: 127.0.0.1:9999
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:26 localhost monit[24709]: 127.0.0.1:10000
Mar 26 08:25:26 localhost monit[24709]:
Mar 26 08:25:57 localhost monit[24709]: 'testapp_pen.conf' checksum has not 
changed

The corresponding config lines are:

check process testapp_pen
  with pidfile /var/run/pen/testapp.pid
  start program = "/usr/bin/pen -F /etc/pen.d/testapp.conf -u nobody
                  -p /var/run/pen/testapp.pid
                  -C 127.0.0.1:9999 127.0.0.1:10000"
  stop program  = "/bin/bash -c 'kill -s SIGTERM `cat 
/var/run/pen/testapp.pid`'"
  ...

Regards,

Brian.