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From Jignesh Badani <jbad...@mmsa.com>
Subject Re: [users@httpd] Apache2.0.48 Illegal instruction & Segmentation fault issues
Date Tue, 27 Sep 2005 19:40:16 GMT
Thanks Nick,

If they started misbehaving, what has changed?  Any system libraries?
Kernel?  Hardware and/or drivers?  And if so, have you rebuilt apache
from clean source?

ANSWER: Nothing has changed apart from the OS patches from time to time. 
And nothing recently. Also this problem has occured 3-4 times this year 
and generally once every 2-3 months. 

> 2 of the instances (2.0.48 - Extranet and 2.0.51 - Intranet) have
> Netegrity Siteminder Agents 

... whatever that is ...

ANSWER: It is Apache module which is responsible for Access control 
(Auth/Az) and SSO and communicates with a backend Policy Server for 
decision making.

> running on them and nothing else (no perl, no 
> php, nothing. They are straight forward Reverse Proxies). I do have  SSL
> enabled on each of the instances and use a Rainbow CSwift accelerator
> hardware.

Do you have anything in Apache to take advantage of that hardware?

ANSWER: If you mean, any directive in httpd.conf/ssl.conf to make use of 
the Accelerator card, yes, I have compiled Apache with a CFLAGS 
-DSSL_EXPERIMENTAL -DSSL_ENGINE which allows me to use the directive "
SSLCryptoDevice cswift" which instructs Apache to offload SSL processing 
to the hardware.

> The management is wanting to know the cause and so do I. What is the 
best
> way to debug this ?

Apart from running gdb on a core dump?

There are some debugging aids at http://people.apache.org/~trawick/

ANSWER:  Thanks. But I believe you need to compile Apache with debug 
option, and second, the Apache instance does not crash, the parent and one 
or 2 child processes are often up. But it is not responding to web 
request.  So I guess there will be no core dump !?


regards
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
- - 
Jignesh Badani
Intranet/Extranet Technical Services
x13563




Nick Kew <nick@webthing.com> 
09/27/2005 10:38 AM
Please respond to
users@httpd.apache.org


To
users@httpd.apache.org
cc

Subject
Re: [users@httpd] Apache2.0.48  Illegal instruction & Segmentation fault 
issues






On Tuesday 27 September 2005 03:36, Jignesh Badani wrote:
> Greetings Folks,
>
> We have been running pretty smoothly 3 instances each of Apache2 (2 of
> them on 2.0.48 and the 3rd one is running 2.0.51) for over an year now 
on
> 2 load balanced Solaris 8 (SunFire 480R 2 - Ultra Sparc 3 900Mhz CPU and 
4
> GB RAM) boxes.

If they started misbehaving, what has changed?  Any system libraries?
Kernel?  Hardware and/or drivers?  And if so, have you rebuilt apache
from clean source?

> 2 of the instances (2.0.48 - Extranet and 2.0.51 - Intranet) have
> Netegrity Siteminder Agents 

... whatever that is ...

> running on them and nothing else (no perl, no 
> php, nothing. They are straight forward Reverse Proxies). I do have  SSL
> enabled on each of the instances and use a Rainbow CSwift accelerator
> hardware.

Do you have anything in Apache to take advantage of that hardware?

> The management is wanting to know the cause and so do I. What is the 
best
> way to debug this ?

Apart from running gdb on a core dump?

There are some debugging aids at http://people.apache.org/~trawick/


-- 
Nick Kew

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