From: Wesley Darlington (wesley at domain yelsew.com)
Date: Fri 05 Oct 2001 - 12:39:58 IST
On Fri, Oct 05, 2001 at 12:07:31PM +0100, Anthony Walters wrote:
> I have a dhcp server running on a Red hat 7 box, I am intersted to know if
> there is anyone else out there running one and what their backup strategies
> for the dhcpd.leases file is, should the hard disk go belly up (god forbid)
One strategy is to run dhcp servers on two machines, but to have them
allocate out of different IP address ranges. AIUI, dhcp clients when
seeking an extension on a lease ask the server that allocated the lease
initially rather than re-broadcasting a lease renew request. ICBW though.
This may be sufficient for purely dynamic allocations, so long as you have
plenty of IP addresses (ie. private addresses). If you have some static
allocations, it would be necessary to maintain the two static databases
The ISC's 3.0 release of their dhcp stuff seems to support failover with
a distributed database sort-of-thing.
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