Failover configuration file errors?

Alan Clegg Alan_Clegg at isc.org
Thu Sep 25 16:02:41 UTC 2008


Jason Gerfen wrote:

> failover peer "tyr.scl.utah.edu" {
>      primary;
>      address 155.97.15.2;
>      port 519;
>      peer address 155.97.15.1;
>      peer port 520;
>      max-response-delay 30;
>      max-unpacked-updates 5;
>      mclt 5;
>      split 2;
>      load balance max seconds 30;
> }

Since you posted the entire stanza....

I'm quite curious as to your choice of split.  What was the rationale
behind the choice of 2?  This will force almost (but not quite) all
lease responses to be given by the second machine in the failover pair.

Was this what you planned?

Additionally, an mclt of 5 seconds is going to cause some MAJOR
thrashing of your network when either a server goes down or they can't
communicate for any reason the longest lease extension available to
clients will be 5 seconds long...

AlanC

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