[nycbug-talk] dealing with drift

[Dan Langille]

On 28 Feb 2005 at 13:09, Isaac Levy wrote:

> Are there any tricks to maintain redundancy with ntp servers?  i.e. is 
> there a builtin/traditional way to configure things so that *all* 
> machines can act as ntp servers in the event that the ntp box goes el' 
> muerte?

Configure NetSaint or other monitoring tool to monitor your primary 
ntp service.  When it goes down, you'll be told.

If you're concerned about the ntp server (versus ntp service) going 
down, you're getting into another arena, and it sounds like CARP to 
me (i.e. multiple servers, same IP address, etc).

If your ntp service can't sync with an outside server for a  day or 
so, you shouldn't get much drift.  Your cluster will all be at the 
same time, because the server is still up.
-- 
Dan Langille : http://www.langille.org/
BSDCan - The Technical BSD Conference - http://www.bsdcan.org/