Howto upgrade from Debian 4 (Etch) to Debian 5 (Lenny)
You probably noticed by now, that Debian GNU/Linux 5.0 aka "Lenny" hasn't been released in September. The reason: too many bugs need to be fixed.
When Lenny has been released, you can upgrade from Etch to Lenny according the steps below:
(According the official Debian documentation, these 5 steps describe the safest way to do that job).
Make a backup of your current Debian Etch system.
Change the content of the file /etc/apt/sources.list.
This means that you need to change "etch" into "lenny".
So in my case i have to change:
deb http://ftp.nl.debian.org/debian/ etch main
deb-src http://ftp.nl.debian.org/debian/ etch main
deb http://security.debian.org/ etch/updates main contrib
deb-src http://security.debian.org/ etch/updates main contrib
deb http://ftp.nl.debian.org/debian/ lenny main
deb-src http://ftp.nl.debian.org/debian/ lenny main
deb http://security.debian.org/ lenny/updates main contrib
deb-src http://security.debian.org/ lenny/updates main contrib
if you use "stable" instead of "etch", your system will make use of the packages provided by Debian Lenny from the moment on that Lenny gets stable!
Execute the command: aptitude update
to get information about new packages
Execute the command: aptitude install dpkg aptitude apt
to install the newest package management
Execute the command: aptitude full-upgrade
The Debian Devel anounce
I tested this method on my testing server with Debian Etch and ISPConfig 220.127.116.11.
The upgrade to Debian Lenny was succesful. :)
Don't perform this upgrade on a production server until Lenny is stable.
It seams that ISPConfig 3 runs fine on Lenny.
Hans, how do I make sure I update etch instead of stable?
Never mind, I found it:
/etc/apt/sources.list should have (or another server if you're not near Essen)
deb http://debian.uni-essen.de/debian/ etch main non-free contrib
deb http://security.debian.org/ etch/updates main contrib non-free
Actually, when Lenny goes stable, it would be a good idea to put a "heads up" notice in the forums before noobs like me destroy their servers ;-)
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