[Beowulf] question for licensed software users

Thomas H Dr Pierce TPierce at rohmhaas.com
Fri Jun 22 06:44:11 PDT 2007

Dear Joe Landman,

The only issues that I have seen with Flexlm involve using a server that 
has with multiple ethernet cards. 

The lmhostid is the "default" mac address, but making changes to the 
server (new OS, changing network cards ) has changed the "default" eth0 
definition at times. 

I have had eth0 and eth1 "change" identities as I patch the OS or add 
ethernet cards. 

It has never happened without cause, eventho unexpected at the software 

   Tom Pierce

Joe Landman <landman at scalableinformatics.com> 
Sent by: beowulf-bounces at beowulf.org
06/22/2007 07:57 AM
Please respond to
landman at scalableinformatics.com

Toon Knapen <toon.knapen at fft.be>
beowulf at beowulf.org
Re: [Beowulf] question for licensed software users

Toon Knapen wrote:
> What kind of problems: developing using FlexLm or deploying an app which 

> needs to talk to a flexlm-server ?

flexlm server suddenly and inexplicably switching its lmhostid.  After a 
reboot.  Renders all licenses unusable.

This happened recently at two customers sites.  One was a windows 
license server, one was a linux license server.  Restarting the boxes 
didn't help.  Restarting the daemon didn't help.  Looking at the license 
files didn't indicate an expiration.  The logs didn't indicate this 
either.  It just appeared (in the logs) that the thing stopped believing 
it was server 1 (the lmhostid is a mac address BTW), and suddenly 
started believing it was a server 2 (well, it took the other mac address 
as its lmhostid).

Very annoying.  Have seen this on multiple boxes over the past few 
years, ones we haven't touched as well as ones we try to "fix" (e.g. 
alter the setup so that the flexlm daemon will in fact run correctly).

This impacts multiple vendor products BTW.

Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 866 888 3112
cell : +1 734 612 4615
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