Re: 20011204: LDM Failover Issues

Hello Patrick, 

The issue here, I believe, is an environment issue.

ldmfail is a perl script, that will get executed via a borne shell.

I suspect you are running in a c-shell (by the sea-shore).

The borne shell will not grab the attributes(paths) that are in your
c-shell.

Soooo, we can either place the path for the decoders in the cron (set
path, blah/blah/blah run ldmfail or you can "hack" your ldmfail program to
include the paths to your decoders.

Check the "Dependencies"

i.e. > from motherlode

##############################################################################
# END OF CONFIGURATION SECTION
###############################################################################
# identify ourselves and set up some extra stuff we will need
$PROGNAME = "ldmfail" ;
$lock_file = "/tmp/.ldmadmin.lck";

$primary = "missing" ;
$failover = "missing" ;

# Dependencies:  
$ENV{ 'PATH' } =
".:/usr/ccs/bin:/opt/SUNWspro/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/gnu/bin:/usr/openwin/bin:/opt/ldm/bi
n:/opt/ldm/util:/opt/ldm/decoders" ;


and if your install is the same as motherlode this should work.

If your ldm dir tree is different, then the appropriate changes would need
to be made.


on lenny:
###############################################################################
# END OF CONFIGURATION SECTION
###############################################################################
# identify ourselves and set up some extra stuff we will need
$PROGNAME = "ldmfail" ;
$lock_file = "/tmp/.ldmadmin.lck";

$primary = "missing" ;
$failover = "missing" ;

# Dependencies:  
$ENV{ 'PATH' } =
".:/bin:/usr/bin:/opt/SUNWspro/bin:/usr/ccs/bin:/usr/local/ldm/bin:/usr/local/ldm/decoders:/usr/loc
al/bin:/usr/etc:/usr/ucb:/usr/local/gnu/bin" ;


notice on lenny:/usr/local/ldm/decoders

and on motherlode:/opt/ldm/decoders


We are working on a more graceful ldmfail program, but that will be
months.


Hope this sheds some light on the subject.

FYI...did not get your attachement.

Thank you, 

-Jeff
____________________________                  _____________________
Jeff Weber                                    address@hidden
Unidata Support                               PH:303-497-8676 
NWS-COMET Case Study Library                  FX:303-497-8690
University Corp for Atmospheric Research      3300 Mitchell Ln
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000
________________________________________      ______________________

On Tue, 4 Dec 2001, Unidata Support wrote:

> 
> ------- Forwarded Message
> 
> >To: Unidata Support <address@hidden>
> >From: "Patrick O'Reilly" <address@hidden>
> >Subject: LDM Failover Issues
> >Organization: UCAR/Unidata
> >Keywords: 200112041640.fB4GeeN16636
> 
> Hi there again!
> 
> I have found that when the LDM fails over, whether it is to the failover
> host or back to the primary host, my hard drive fills up with errors, as
> data is no longer being decoded due to broken pipes, write errors, etc. 
> I have attached a clip from a 13MB ldmd.log file to illustrate these
> messages.  I have found a support email that mentions this problem
> without telling how to fix it
> (http://www.unidata.ucar.edu/glimpse/ldm/3301).  The fix actually
> mentioned in the support email, I guess, is to comment out ldmfail in
> cron, if the primary host is reliable.  Have there been other reports of
> this with ldmfail and are there fixes?  Thanks!
> 
> Patrick
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Patrick O'Reilly             Support Scientist
> The STORM Project            address@hidden
> 208 Latham Hall              ph: 319-273-3789
> University of Northern Iowa
> Cedar Falls, IA 50614
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> ------- End of Forwarded Message
> 
>