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Re: Disaster Recovery.

From: Mark . Burgess
Subject: Re: Disaster Recovery.
Date: Wed, 19 May 2004 08:44:15 +0200 (MEST)

On 19 May, Tony Hawke wrote:
> Hi all,
> I'm considering setting up a cfengine site, but have come up against a 
> little wall and couldn't find anything of help in the FAQ or docs.  What 
> happens when the main cfengine server goes down?
> I know that all of the clients can continue using their current 
> configs.  But as soon as I get the main server back up (restored from 
> backup or whatever,) they'll lose whatever changes have been made to 
> their configs in the intervening time.  This is a bit of an issue as the 
> systems we use here are somewhat fluid in their configuration.
> So the question is: Is there any inbuilt way for the clients to failover 
> to a second server if the main cfengine server goes down?
> Thanks in advance,
> Tony

Certainly use can use failover=classname in copy to define a class that
activates failover rules, but that does not seem to address the main
point in your question that is confusing everyone: why will machines
"lose changes to their configs"? Cfengine does not keep track of changes
that you make, it tries to correct changes that might have occurred.
It will, of course, continue to do that regardless of whether it has
the very latest configuration file.


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