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Re: [LUG] DNS / DHCP newbie ish query





DHCP in particular is a bit of a pain to make properly
redundant. Although the ISC product does have a mechanism for
DHCP server redundancy, it sucks, and the Microsoft solution
wasn't any better last time I looked. Microsoft's advice, locate
DHCP server on highly redundant hardware <doh>.


reminds me of a good example of how linux is being used in big comapnies...

i worked at an insurance company where the DHCP was on a fine server - but it had MS windows for the OS. two thursdays in a row the server went down and all the workers realised that all they had to do was to logout and try to login again (which failed) and they had an afternoon of doing no work ahead of them. (400/500 staff being paid for bugger all)

on the second thursday - whilst board room was full of managers/MSCEs/directors arguing and getting nowhere one of the UNIX guys setup linux/DHCP on an old desktop which had been replaced cos it was too slow to run MS office - and, of course, it did the job fine.

when i last spoke to him he said it had run perfectly for 3 years - but then the harddisk failed. he had another machine which he quickly replaced it with,

oh - and i've tried to install windows 2000 crappy mixture of active directory services/DNS/DHCP/ISA/internetsharing over a couple of weeks and found i was losing the will to program/live!

kev







ISC Dynamic DNS doesn't have decent redundancy mechanisms built
in, if the master is down for too long, upgrade a slave.

One other solution is dnsmasq, which combined simple DNS with
access to the DHCP lease file. Looked okay for small networks, I
have a note that I should audit the code before I recommend it.
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