On 20:56, Sat 28 Jun 08, Juan Miscaro wrote:

quoted text
> Hi, using OpenBSD (4.3 current), what is the recommended way to set up

> application level failover?  Let's say I have content that is

> constantly edited by several internal users (like a webserver dishing

> up text and images) and is available to the internet.  If I want to

> have failover that content needs to synchronize real-time with a

> second machine.  Apart from setting up the network part (with relayd I

> think), how is the data synchronization done?  For a more complex

> case, how is failover achieved for IMAP services?

What we do is have some sort of central storage.

We use netapp for that (and on another setup we have a HA NFS server

based on linux with drbd to do the sync of the data between the two NFS

servers)
A bunch of boxen is mounting this storage using NFS and running the

services.

A pair of OpenBSD firewalls with relayd is doing the

loadbalancing/failover stuff.
-- 
Michiel van Baak

michiel@vanbaak.eu

http://michiel.vanbaak.eu

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