Fail-over Server
Ed Wilts
ewilts at ewilts.org
Fri Mar 26 20:19:12 UTC 2004
On Fri, Mar 26, 2004 at 02:59:03PM -0500, Ryan Golhar wrote:
> I'm in the process of setting up a server to act as a failover server if
> the primary server goes down. The services I need to have failed over
> include:
Start at http://www.linux-ha.org.
> 1. DHCP (maintaining current leases)
Can't really be done. The leases will be lost. The way it's typically
done is to have your lease pool split into two between the 2 servers so
that any given client can still get a new lease. Set your timeouts to a
high enough value so that you can afford to lose your DHCP server for a
while. We're running our office production DHCP server on a single
system (happens to be VMS but that's not relevant) and we haven't had a
serious incident yet. We support several thousand desktops and printers
scattered throughout the world and it's been working fine.
--
Ed Wilts, Mounds View, MN, USA
mailto:ewilts at ewilts.org
Member #1, Red Hat Community Ambassador Program
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