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How to generate coredumps with Access Gateway

This document (7011566) is provided subject to the disclaimer at the end of this document.

Environment

NetIQ Access Manager 3.2
NetIQ Access Manager 3.2 Access Gateway

Situation

There may be occasions where it is necessary to force a coredump to be generated when troubleshooting Access Gateway issues e.g. system hangs, or resource leaks. When running in debug mode, the option to force a coredump is relatively easy to perform but when running the novell-apache2 service in non debug mode, it becomes more complex.

Resolution

Core files can be generated in two ways:

1. Start /etc/init.d/novell-apache2 in debug mode using '/etc/init.d/novell-apache2 start debug'/

Whenever there is a crash, a corresponding core file will be created as /var/cache/novell-apache2/core. An administrator with access to the system can also test it by sending signal 11 to the apache2 parent process (always the last of the 3 httpd PIDs returned with a 'ps aux|grep httpd' command. For example:

kill -11 <pid of apache2 parent process>

2. Without starting the novell-apache2 in debug mode:

a) Set "ulimit -c unlimited" in "/etc/init.d/novell-apache2" startup script. There exists a reference to this command in the script already, but it is only active when running in debug mode

if [ -f ${DEBUG_ENABLED} ]; then
    ulimit -c unlimited
        APACHE_OPTIONS=" -D allowServerDebug"
fi

Simply add the 'ulimit -c unlimited' command outside of the if statement

b) Create a directory on the Access Gateway server where the core file will be located e.g.  /tmp/apache2-gdb-dump
# mkdir -p /tmp/apache2-gdb-dump

c) Set permission for writing to this directory:

# chown novlwww:www /tmp/apache2-gdb-dump
# chmod 0777 /tmp/apache2-gdb-dump

d) Add an advanced option in AG configuration in AC as follows:
CoreDumpDirectory /tmp/apache2-gdb-dump

e) Apply changes to Access Gateway so that it is updated with the Advanced Option. Whenever there is a crash, core file will be created with the name /tmp/apache2-gdb-dump/core.

You can also test it by sending signal 11 to apache2 parent process. For eg: kill -11 <pid of apache2 parent process>

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7011566
  • Creation Date:02-JAN-13
  • Modified Date:02-JAN-13
    • NetIQAccess Manager (NAM)

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