How can i upgrade to Debian 12

Hello,

i am using debian 11 with latest version ispconfig.

Code:

Distributor ID: Debian
Description:    Debian GNU/Linux 11 (bullseye)
Release:        11
Codename:       bullseye

I would like to upgrade to debian 12 but i dont know why. I tried to use apt upgrade but here is no package to upgrade, all is up to date.I found this, but i think that this is just for new installation https://www.howtoforge.com/ispconfig-autoinstall-debian-ubuntu/

My source list

Code:

# deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 NETINST 20210814-10:07]/ bullseye main

#deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 NETINST 20210814-10:07]/ bullseye main

deb http://deb.debian.org/debian/ bullseye main contrib non-free
deb-src http://deb.debian.org/debian/ bullseye main contrib non-free

deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb-src http://security.debian.org/debian-security bullseye-security main contrib non-free

# bullseye-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.debian.org/debian/ bullseye-updates main contrib non-free
deb-src http://deb.debian.org/debian/ bullseye-updates main contrib non-free

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.

 

Just replace in sourcelist “bullseye” with “bookworm”:?

 

I did it and working fine.

But last thing. I dit upgrade all package but when i tried to use apt update now to check is here something new, i get

Code:

xx@xx:~# apt update
Hit:2 https://packages.sury.org/php bullseye InRelease
Hit:3 http://security.debian.org/debian-security bookworm-security InRelease
Hit:4 http://deb.debian.org/debian bookworm InRelease
Hit:5 http://deb.debian.org/debian bookworm-updates InRelease
Hit:1 https://rspamd.com/apt-stable bullseye InRelease
Ign:6 http://download.webmin.com/download/repository sarge InRelease
Hit:7 http://download.webmin.com/download/repository sarge Release
Get:9 https://deb.goaccess.io bullseye InRelease [3,772 B]
Fetched 3,772 B in 3s (1,277 B/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
N: Repository 'Debian bookworm' changed its 'non-free component' value from 'non-free' to 'non-free non-free-firmware'
N: More information about this can be found online in the Release notes at: https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.html#non-free-split

Any idea why?

sourcelist

Code:

# deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 NETINST 20210814-10:07]/ bullseye main

#deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 NETINST 20210814-10:07]/ bullseye main

deb http://deb.debian.org/debian/ bookworm main contrib non-free
deb-src http://deb.debian.org/debian/ bookworm main contrib non-free

deb http://security.debian.org/debian-security bookworm-security main contrib non-free
deb-src http://security.debian.org/debian-security bookworm-security main contrib non-free

# bullseye-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.debian.org/debian/ bookworm-updates main contrib non-free
deb-src http://deb.debian.org/debian/ bookworm-updates main contrib non-free

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.

 

No need to do anything to the sourcelist except run your server with the latest ISPConfig release as Debian 12 is already supported.

 

Yes, i did it and working fine. But when i try to use apt update after that i get and not sure why

Code:

All packages are up to date.
N: Repository 'Debian bookworm' changed its 'non-free component' value from 'non-free' to 'non-free non-free-firmware'
N: More information about this can be found online in the Release notes at: https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.html#non-free-split

 

When I look into http://ftp.debian.org/debian/dists/bookworm/ the following exists:

• contrib
• main
• non-free-firmware
• non-free

I would like to suggest to add non-free-firmware besides non-free in the apt source list.
On my laptop I require non-free-firmware and non-free when I want to install the proprietary NVIDIA driver.
It's also easy to misread (and I did that many times - fuming because the NVIDIA driver wouldn't work:

So, they changed it from "non-free" into "non-free non-free-firmware" which includes both.
I expect you don't need NVIDIA drivers on you server - but there could be something in non-free and non-free-firmware which you could eventually need.

 

Debian provides release upgrade instructions in Bookwork Release notes, https://www.debian.org/releases/bookworm/releasenotes. It documents extensively the process of upgrading bullseye to bookworm, i.e. Debian 11 to Debian 12.
If you read those carefully, you will find also non-free-firmware explained:
https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#non-free-split

 

And after an upgrade, if you decide to remove PHP 7.4, remember to enable php8.2-fpm in Apache...