Re: 20031111: motherlode inaccessibility

• To: Daryl Herzmann <akrherz@xxxxxxxxxxx>
• Subject: Re: 20031111: motherlode inaccessibility
• From: "Arthur A. Person" <person@xxxxxxxxxxxxx>
• Date: Wed, 12 Nov 2003 09:14:26 -0500 (EST)

Hi...

Does automatic failover require that the ldm be able to shut down
gracefully?  I tried to stop my ldm's this AM and both would not terminate
due to some downstream site hanging on, apparently.  My guess is failover
wouldn't work in that case...

                                    Art.

On Tue, 11 Nov 2003, Daryl Herzmann wrote:

> On Tue, 11 Nov 2003, David Wojtowicz wrote:
> 
> >I had very bad experiences in the past with automated failover (the old
> >ldmfail program caused me lots of headaches) 
> 
> I as well.  I disabled it too.
> 
> >so I guess I have a natural adversion to it, but I should try with the
> >new builtin failover tools. Actually, did it handle it on your system?  
> >Thelma is still up and feeding data at this moment.
> 
> At 22:37 Z, the connection to thelma was lost and then it came back at 
> 23:34Z.  The failover and reconnection was all seemless without restarting 
> LDM.  The best part of the new method is only having one ldmd.conf file!  
> 
> For those that are curious, here is an example of the new system.
> 
> request DDPLUS  ".*"    unidata2.ssec.wisc.edu  PRIMARY
> request DDPLUS  ".*"    thelma.ucar.edu ALTERNATE
> 
> Later
>   Daryl
> 
> 
> /**
>  * Daryl Herzmann (akrherz@xxxxxxxxxxx)
>  * Program Assistant -- Iowa Environmental Mesonet
>  * http://mesonet.agron.iastate.edu
>  */
> 

-- 
Arthur A. Person
Research Assistant, System Administrator
Penn State Department of Meteorology
email:  person@xxxxxxxxxxxxxxxxxx, phone:  814-863-1563

• References:
  • Re: 20031111: motherlode inaccessibility
    • From: Daryl Herzmann