ZENworks Imaging Server service crash under heavy load of PXE agents starting up

  • 7004456
  • 16-Sep-2009
  • 10-May-2019

Environment

Novell ZENworks 10 Configuration Management with Support Pack 2 - 10.2
Windows primary using older openssl stack

Situation

In some situations, when many agents attempt to PXE boot simultaneously, there may be a crash in PXE web service on Windows ZCM servers.
 
Error (in drwtson log):
 
novell-pbserv.exe Exception number: c0000005 (access violation)
 

Resolution

  1. Stop the Novell ZENworks Preboot Service (novell-pbserv) using services.msc or novell-zenworks-configure -c Start
  2. Modify %ZENWORKS_HOME%\conf\preboot\novell-zenimgweb.conf
  3. Add the following to the file:
    FORCEHTTP=forced
    Note:  if the primary is configured to use a port other than 80, change the port in the same file.
  4. Restart the Novell ZENworks Preboot Service (novell-pbserv) using services.msc or novell-zenworks-configure -c Start

Cause

This was due to a bug in the older openssl for Windows.

Additional Information

The fix disables use of the OpenSSL package which is not required for ZENworks imaging. 

For more information about changing to forced see Imaging troubleshooting guide: https://www.novell.com/documentation/zenworks114/zen11_cm_preboot_imaging/data/bet6aj4.html

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