Hi,
Anyone ready to upgrade Debian 5.0 Lenny to latest Debian, this is a live server prox 70-80 domains
Virtualmin version 3.98 Pro
Webmin version 1.620
Main reason is up to date php
Can this be done with out any downtime and hassel free ?
Howdy,
There are instructions here on upgrading Debian 5 to 6 (though, note that Debian 7 is about to come out):
http://www.virtualmin.com/documentation/system/os/debian-lenny-to-squeeze-distupgrade
Can it be down without hassle and/or downtime?
Well, that’s a tall order 
I’d highly recommend performing the upgrade on a test server, prior to attempting it on your live server.
It takes a lot of testing and preparation to get to a point where there’s minimal downtime.
But upgrading from one distro to another is a big deal, and there’s plenty of opportunity for things to go wrong. The more planning, testing, and preparation you perform, the less likely you’ll be to experience significant downtime.
When I do upgrades like that, I would generally plan for it to be at night, during a time when users wouldn’t normally be using the server. And then, if something does go wrong, it’s less likely to be immediately noticed.
-Eric
Thanks Eric,
Yes some downtime during the night is ok, these are nice instructions so perhaps I will just do this myself