Getting httpd to dump core on RHEL5

[Graham Leggett <mi...@sharp.fm>]

Hi all,

I am trying to get a core dump out of an RHEL5 system, and I am 
struggling to do so.

Following the instructions at 
http://httpd.apache.org/dev/debugging.html#crashes, I have set "ulimit 
-c unlimited", and I set CoreDumpDirectory to /tmp, but with no luck.

Is there some further magic that needs to be done to get httpd to dump 
core successfully on Linux?

Regards,
Graham
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Re: Getting httpd to dump core on RHEL5

[Niklas Edmundsson <ni...@acc.umu.se>]

On Thu, 17 Apr 2008, Graham Leggett wrote:

> Hi all,
>
> I am trying to get a core dump out of an RHEL5 system, and I am struggling to 
> do so.
>
> Following the instructions at 
> http://httpd.apache.org/dev/debugging.html#crashes, I have set "ulimit -c 
> unlimited", and I set CoreDumpDirectory to /tmp, but with no luck.
>
> Is there some further magic that needs to be done to get httpd to dump core 
> successfully on Linux?

On our Ubuntu boxen having "ulimit -c unlimited" in the httpd startup 
script and "CoreDumpDirectory /tmp" in httpd.conf is sufficient.

kill -SEGV some-httpd-pid should yield a coredump IIRC.

The coredump will be useless unless you have compiled with -g though, 
but I guess you already knew that ;)

/Nikke
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