Re: [EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues
On Mon, Sep 26, 2005 at 07:36:34PM -0700, Jignesh Badani wrote: ... [Mon Sep 26 18:25:45 2005] [notice] child pid 326 exit signal Illegal instruction (4) The management is wanting to know the cause and so do I. What is the best way to debug this ? I know we could upgrade to the latest 2.0.54 and we Follow the instructions on obtaining a backtrace at this URL, and post the backtrace here: http://httpd.apache.org/dev/debugging.html#crashes joe - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [EMAIL PROTECTED] 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 - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues
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 [EMAIL PROTECTED] 09/27/2005 10:38 AM Please respond to users@httpd.apache.org To users@httpd.apache.org cc Subject Re: [EMAIL PROTECTED] 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 - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues
Thanks Geoff, Out of interest, what SSL session cache type are you using on these hosts? shmcb? Cheers, Geoff We are using the default dbm on all 3 Apache instances. We have had some shared memory errors when using shm* in the past and reverted back to the default DBM. regards - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Jignesh Badani Intranet/Extranet Technical Services Geoff Thorpe [EMAIL PROTECTED] 09/26/2005 08:50 PM To users@httpd.apache.org cc Jignesh Badani [EMAIL PROTECTED] Subject Re: [EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues Hi there, On September 26, 2005 10:36 pm, Jignesh Badani wrote: [Mon Sep 26 18:01:09 2005] [notice] child pid 11892 exit signal Segmentation fault (11) [Mon Sep 26 18:25:03 2005] [notice] child pid 27766 exit signal Illegal instruction (4) [Mon Sep 26 18:25:42 2005] [notice] child pid 27765 exit signal Illegal instruction (4) [Mon Sep 26 18:25:45 2005] [notice] child pid 326 exit signal Illegal instruction (4) Out of interest, what SSL session cache type are you using on these hosts? shmcb? Cheers, Geoff -- Geoff Thorpe [EMAIL PROTECTED] http://www.geoffthorpe.net/ Même ceux qui se sentent pas des nôtres, ne nous voyant plus à genoux, seront, plus que jamais, chez eux chez nous. -- Loco Locass - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues
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. 2 of the instances (2.0.48 - Extranet and 2.0.51 - Intranet) have Netegrity Siteminder Agents 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. But since the begining of the year, we have had this issue 3-4 times when the Extranet instance (on either of the box) stops responding, the child processes reduces from 8-10 to 2-3 and the error log is filled with the errors below. Even the server-status page fails to load. It happened again twice today, once on each server but on the same Extranet instance which has the web agent. Also fyi, the Extranet instance serves bulk of the load, say about 80%. And today it happened very late in the day (around 5:00pm and 6:00pm PST) which is normally very light for us. The server CPU and memory usages are pretty low (less then 30%). [Mon Sep 26 18:01:09 2005] [notice] child pid 11892 exit signal Segmentation fault (11) [Mon Sep 26 18:25:03 2005] [notice] child pid 27766 exit signal Illegal instruction (4) [Mon Sep 26 18:25:42 2005] [notice] child pid 27765 exit signal Illegal instruction (4) [Mon Sep 26 18:25:45 2005] [notice] child pid 326 exit signal Illegal instruction (4) The management is wanting to know the cause and so do I. What is the best way to debug this ? I know we could upgrade to the latest 2.0.54 and we are in the process to do so and move from Solaris to Suse SLES 9 in about 2-3 weeks time. Keep in mind, it only happens sporadically and we cannot reproduce it. A restart of the instance resolves the issue. Here is how I have compiled Apache (config.nice) CFLAGS=-DSSL_EXPERIMENTAL -DSSL_ENGINE; export CFLAGS echo $CFLAGS ./configure \ --prefix=/opt/apache2e \ --with-mpm=worker \ --enable-ssl \ --with-ssl=/opt/openssl \ --enable-nonportable-atomics=yes \ --enable-proxy=shared \ --disable-ipv6 \ --cache-file=/export/home/x/install/apache_openssl/httpd-2.0.48e/config.cache \ $@ regards - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Jignesh Badani Intranet/Extranet Technical Services - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [EMAIL PROTECTED] Apache2.0.48 Illegal instruction Segmentation fault issues
Hi there, On September 26, 2005 10:36 pm, Jignesh Badani wrote: [Mon Sep 26 18:01:09 2005] [notice] child pid 11892 exit signal Segmentation fault (11) [Mon Sep 26 18:25:03 2005] [notice] child pid 27766 exit signal Illegal instruction (4) [Mon Sep 26 18:25:42 2005] [notice] child pid 27765 exit signal Illegal instruction (4) [Mon Sep 26 18:25:45 2005] [notice] child pid 326 exit signal Illegal instruction (4) Out of interest, what SSL session cache type are you using on these hosts? shmcb? Cheers, Geoff -- Geoff Thorpe [EMAIL PROTECTED] http://www.geoffthorpe.net/ Même ceux qui se sentent pas des nôtres, ne nous voyant plus à genoux, seront, plus que jamais, chez eux chez nous. -- Loco Locass - The official User-To-User support forum of the Apache HTTP Server Project. See URL:http://httpd.apache.org/userslist.html for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
