[syslog-ng] Antw: Re: Syslog-ng sometime dies at 04:02

Peter Michael Calum pemca at tdc.dk
Wed Feb 20 14:29:53 CET 2008

Hi bazsi

i put the  ulimit -c unlimited in /etc/init.d/syslog-ng  start section
start() {
    ulimit -c unlimited
    echo -n $"Starting $prog: "
    daemon $exec $SYSLOGNG_OPTIONS
    [ $retval -eq 0 ] && touch $lockfile
    return $retval

syslog-ng runs i /sbin
prog=$(basename $exec)

restarted syslog-ng
/etc/init.d/syslog-ng restart

get the pid 
[root at khk9dsg5 sysconfig]# ps -ef | grep syslog-ng
root     32259     1  0 14:21 ?        00:00:00 /sbin/syslog-ng -p /var/run/syslogd.pid

kill -ABRT 32259

but i cant find any core files in the sbin directory (i gave /sbin 777 rights)


-----Oprindelig meddelelse-----
Fra: syslog-ng-bounces at lists.balabit.hu [mailto:syslog-ng-bounces at lists.balabit.hu] På vegne af Balazs Scheidler
Sendt: 20. februar 2008 10:30
Til: Syslog-ng users' and developers' mailing list
Emne: Re: [syslog-ng] Antw: Re: Syslog-ng sometime dies at 04:02

On Tue, 2008-02-19 at 17:51 +0100, Peter Michael Calum wrote:
> Hi bazsi
> Ok, i'll change the line in logrotate.d back to a reload parameter
> but you have to explain to mee, how i set up the trace, and how i get 
> the results out.
> Do you want results every 04:02 or only when syslog-ng dies ?

Sorry, I was in a hurry when I wrote my last email. I only need
information whenever syslog-ng dies and I'd need the syslog-ng binary,
with all the shared libraries it depends on in /lib and the core file

Core files are produced if the program is started with the 'maximum core
file size' ulimit set to a high enough value, I'd suggest to set it to

Thus, please do the following:

* Add this line to your syslog-ng init script:
  "ulimit -c unlimited"
* Make sure that syslog-ng has permissions to write the directory it is
started from.
* Wait for syslog-ng to crash
* The core file will be produced in the directory syslog-ng was started

As the crash is quite rare, I'd suggest to test that core files are
properly produced, before waiting for an overnight. You can test this by
sending a fatal signal to syslog-ng, something like this:

kill -ABRT <syslog-ng pid>

This should create a core file in the current working directory. Once
this works, you can be assurred that a core file will be created if
syslog-ng crashes.

Thanks in advance,


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