Re: [SLE] Looking for a book that describes highly available DHCP setups

Per Jessen wrote: 
Joachim Schrod wrote:

I'm looking for a book that explains reliable and manageable DHCP
setups. In particular, it should cover installations with failover and
load balancing configurations of dhcpd. Both static and dynamic
addressing is used.

a simple Linux-HA setup with heartbeat and drbd is really all you need. Yes, there's a little delay in starting the slave DHCP server when the
master dies, but that hardly matters for DHCP? 

dhcpd has clustering capability included, I want to use that capability.

Linux-HA is not sufficient, as this doesn't synchronize the DHCP leases between the clustering nodes. I.e., in the case of failovers the new node would not know about leases of the previous node any more. Usage of ISC dhcpd's failover capabilities avoids that problem.

As I wrote, I know about the technology already. I am interested in in-depth treatment of pitfalls and strategies for implementation, in the stuff that's not elaborated in product manuals and IETF RFC drafts.

Cheers,
	Joachim

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Joachim Schrod				Email: jschrod@xxxxxxx
Roedermark, Germany

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