Finding IHSDiag for IBM HTTP Server (IHS) Troubleshooting, Mustgathers, and Diagnostic Tools
 Technote (troubleshooting)
 
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Problem(Abstract)
IBM® HTTP Server (IHS) Troubleshooting, Mustgather, Diagnostic Tools, Diagnostic Information, and General Information from IHSDiag.
 
Symptom
 
Resolving the problem


Where can I find IHSDiag along with all of these IBM HTTP Server Mustgathers, Diagnostic Tools, and Troubleshooting Information?

IHSDiag:
http://publib.boulder.ibm.com/httpserv/ihsdiag/


IHSDiag is a central location for IBM HTTP Server (IHS) Troubleshooting, Mustgather, Diagnostic Modules, and Diagnostic Information.


Here are some examples of the resources that IHSDiag has offered:

IBM HTTP Server MustGathers

- MustGather information for web server hangs
- MustGather information for web server child process crashes
- MustGather information for high CPU problems
- MustGather information for startup problems
- MustGather information for termination problems
- MustGather information for problems with ErrorDocument handling
- MustGather information for CRL (Certificate Revocation List) problems
- MustGather information for NLS / UTF-8 problems
- MustGather information for Certificate problems
- System and web server information MustGather tool

Other diagnostic information

- Diagnosing problems in environments with third-party modules
- Using IBM HTTP Server V6.1 diagnostic capabilities with IBM® WebSphere® Application Server
- Using IBM HTTP Server diagnostic capabilities with WebSphere Application Server (for releases older than V6.1)
- preparing for possible problems ahead of time
- configuring IHS and the OS to take core dumps
- diagnosing suspected problems with mod_deflate
- getting backtraces from core dumps manually
- web server hangs with IHS V2.0 or above on Solaris

General information

- IBM HTTP Server performance tuning
- Disabling the HTTP TRACE method
- Common questions about IBM HTTP Server
- Descriptions for common error log messages
- Using mod_alias or mod_rewrite with the WebSphere Application Server Plug-in

Diagnostic modules for IBM HTTP Server V1.3

- mod_prctl - allow core dumps on Linux® V2.4 kernels
- mod_tracepid - get information on the request being processed at the time of a crash
- mod_net_trace - trace network activity between IHS and the web browser or other client
- mod_backtrace - automatic backtraces for child process crashes
- mod_whatkilledus - automatic collection of information about the request which caused a crash

Diagnostic modules for IBM HTTP Server V2.0 and above

Note: IBM HTTP Server V6.0 and V6.1 are compatible with IBM HTTP Server V2.0. The version number of IBM HTTP Server V6.0 and higher reflects the release of WebSphere Application Server with which it corresponds. All information on IBM HTTP Server V2.0 also applies to IBM HTTP Server V6.0 and V6.1, unless stated otherwise.

- mod_prctl - allow core dumps on Linux V2.4 kernels
- mod_net_trace - trace network activity between IHS and the web browser or other client
- mod_backtrace - automatic backtraces for child process crashes
- mod_whatkilledus - automatic collection of information about the request which caused a crash
- mod_backdoor - a way for an administrator to send requests to the server when it is otherwise unresponsive
- mod_mpmstats - monitor server status

All of this documentation is included in the IHSDiag package.



Alternate Link to IHSDiag Tool and Information:

MustGather: Debugging IBM HTTP Server crashes, hangs, high CPU, startup failures
Runtime/swg24008409.html
 
Related information
IBM HTTP Server Diagnostic Tools and Information
 
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > IBM HTTP Server
Operating system(s): z/OS
Software version: 6.1
Software edition:
Reference #: 1296892
IBM Group: Software Group
Modified date: Sep 3, 2008