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

[Peter Michael Calum]

Hi

echo `pwd` in the start script only shows / and there's no core file 

rgds,
Peter

-----Oprindelig meddelelse-----
Fra: syslog-ng-bounces at lists.balabit.hu [mailto:syslog-ng-bounces at lists.balabit.hu] På vegne af Joe Fegan
Sendt: 20. februar 2008 14:42
Til: Syslog-ng users' and developers' mailing list
Emne: Re: [syslog-ng] Antw: Re: Syslog-ng sometime dies at 04:02


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

This just shows where the syslog-ng program is physically stored on disk, not the
working directory of the process.

Modify the "start" script to echo `pwd`
That's where the core file will be written.


> Date: Wed, 20 Feb 2008 14:29:53 +0100
> From: pemca at tdc.dk
> To: syslog-ng at lists.balabit.hu
> Subject: Re: [syslog-ng] Antw: Re: Syslog-ng sometime dies at 04:02
>
> 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 $SYSLOGNG_OPTIONS
> retval=$?
> echo
> [ $retval -eq 0 ] && touch $lockfile
> return $retval
> }
>
> syslog-ng runs i /sbin
> -----------------------
> exec="/sbin/syslog-ng"
> prog=$(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)
>
> rgds,
> Peter
>
>
> -----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
> produced.
>
> 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
> unlimited.
>
> 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
> from.
>
> 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 
>
> 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,
>
>
> --
> Bazsi
>
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