Luiz Felipe wrote: > Hi everyone. > > I have a box which runs Squid, Bind, ISC DHCP and some firewall rules. > > I would like to know any suggestions about which kind of cluster should > I build, which limitations I have etc. > Would be nice an option with just one another machine, load balancing or > not, but making back-up each other. > > Anyone experiences/suggestions with that? Here's a wiki i've been working on relating to a clustered Shorewall setup. It may not be appropriate to your environment. http://linuxman.wikispaces.com/Shorewall+basic+failover+with+heartbeat With squid and named i'd be inclined to run an instance on each machine, and use heartbeat to manage 2 clustered IP addresses, one normally resident on each node in your heartbeat cluster. That way it would be load-balanced by default, but if there were a problem with one server, both IP addresses would migrate to the working server. LVS is another (better?) option. Dhcpd doesn't need to be clustered as long as you can ping the clients from the server. Just run a copy with the same configs on each server. There are some additional options that you can use to let the two servers talk to each other, but in small-to-medium-sized environments, i've not found that to be necessary. In all of these cases, you should probably keep configs on a separate admin system and rsync them to your target cluster nodes. -- Paul <http://paulgear.webhop.net> -- Did you know? OpenOffice.org has built-in PDF creation. Better yet, it's compatible with Microsoft Office, and free! Find out more at <http://www.openoffice.org>.
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