Upgrade des Debian Edu Haupt-Servers (TJENER) von Debian Edu squeeze nach Debian Edu jessie
Package Upgrades
to Debian (Edu) wheezy
Update /etc/apt/sources.list and individual configurations in /etc/apt/sources.list.d/, so that packages for Debian wheezy will get installed with next upgrade / dist-upgrade.
Run upgrade and dist-upgrade in two steps
root@tjener:~# apt-get upgrade root@tjener:~# apt-get dist-upgrade
- Reboot into the new Debian wheezy system, ignore if some services are broken / non-functional.
to Debian (Edu) jessie
Update /etc/apt/sources.list and individual configurations in /etc/apt/sources.list.d/, so that packages for Debian jessie will get installed with next upgrade / dist-upgrade.
Run upgrade and dist-upgrade in two steps
root@tjener:~# apt-get upgrade root@tjener:~# apt-get dist-upgrade
- Reboot into the new Debian jessie system, ignore if some services are broken / non-functional.
Possible mistakes
Don't forget the reboot into the Debian wheezy system, because you will run into troubles when upgrading the udev package from wheezy to jessie if still running the 2.6.32 Linux kernel from Debian squeeze.
Fixing the TJENER setup after package upgrade
The Debian Edu mainserver is not easily upgradable, because the mainserver installation process in Debian Edu does many modifications to the plain Debian system.
Fix DNS server (bind9)
During the upgrade process, the DNS server configuration (synced into text files from LDAP) gets lost. You need to rebuild the DNS server configuration files from LDAP manually.
Add
10.0.2.2 ldap.intern
to /etc/hosts temporarily.Add
BIND_DATA="/etc/bind"
at the end of /etc/default/ldap2zone.
Rebuild the DNS configuration (in /etc/bind) via ldap2bind command: