Matthew Palmer wrote:
On Mon, Mar 08, 2010 at 03:21:32PM +0800, Martin Aspeli wrote:
Matthew Palmer wrote:
What is the normal way to handle this? Do people have one floating IP
address per service?
This is how I prefer to do it. RFC1918 IP addresses are cheap, IPv6 address
quintuply so. Having everything tied to one address causes some mayhem when
something falls over (failover is quick, but it ain't instantaneous), so
it's far better to give everything it's own address and let them drift about
independently. Also, it makes load-spreading (run PgSQL on one machine,
memcached on the other, for instance) much easier.
Pardon my Linux ignorance, but does mean we need one NIC per service as
well, or can we bind multiple (floating) IPs to each interface?
Yes, you can bind many IP addresses to a single NIC. The IP address
management RAs pretty much depend on this behaviour. What (modern) OS are
you familiar with that doesn't support this?
You assume I'm familiar with any modern OS' network management. ;-)
Thanks for the clarification!
Martin
--
Author of `Professional Plone Development`, a book for developers who
want to work with Plone. See http://martinaspeli.net/plone-book
_______________________________________________
Pacemaker mailing list
Pacemaker@oss.clusterlabs.org
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
