Alarming on coredumps on Linux?

[Thomas Guyot-Sionnest]

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On 07/10/08 01:26 PM, Tim Pushor wrote:
> Hello everyone,
> 
> While not specifically a nagios issue, I am setting up a nagios 
> installation to monitor a server that is used to run an interactive 
> application by several users at once (> 50). The problem is, 
> occasionally the application dumps core, and the users don't always 
> notify us when this happens. We'd like to trigger a passive alarm to 
> nagios on our application dumping core.
> 
> On other OS's (specifically FreeBSD IIRC) the kernel logs coredumps and 
> end up in the system log so watching the logfiles with swatch or 
> something similar would do the trick.
> 
> On my Linux system (CentOS 5.2) it appears that coredumps don't log. 
> Does anyone have any ideas how I can trigger an event on coredump on Linux?

This is not really a nagios issue... AFAIK segfaults are logged in
Linux; have you looked at the kernel messages (dmesg)?

If it shows in dmesg output but not on your logs, make sure syslog is
configured properly to retrieve those messages. You could also log
kern.* to a specific files to be sure.

I think log levels can also be tuned with /proc/sys/kernel/printk; see
"man 5 proc".

- --
Thomas
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