MrGeneration / Debian / Ubuntu Upgrade

systemctl disable zammad --now apt-mark hold zammad apt update apt upgrade # Continue with step 2 or 3 depending on your current state

sed -i 's/security\.debian\.org buster\/updates/security\.debian\.org bullseye-security/g' /etc/apt/sources.list sed -i 's/debian-security buster\/updates/ bullseye-security/g' /etc/apt/sources.list sed -i 's/buster/bullseye/g' /etc/apt/sources.list sed -i 's/debian 10/debian 11/g' /etc/apt/sources.list.d/zammad.list apt clean; apt update apt upgrade apt dist-upgrade pg_dropcluster --stop 13 main pg_upgradecluster 11 main /var/lib/postgresql/13/ apt autoremove shutdown -r now

sed -i 's/bionic/focal/g' /etc/apt/sources.list sed -i 's/ubuntu 18/ubuntu 20/g' /etc/apt/sources.list.d/zammad.list apt clean; apt update apt upgrade apt dist-upgrade pg_dropcluster --stop 12 main pg_upgradecluster 10 main /var/lib/postgresql/12/ apt autoremove shutdown -r now

sed -i 's/bullseye/bookworm/g' /etc/apt/sources.list sed -i 's/debian 11/debian 12/g' /etc/apt/sources.list.d/zammad.list apt clean; apt update apt upgrade apt dist-upgrade pg_dropcluster --stop 15 main pg_upgradecluster 13 main /var/lib/postgresql/15/ apt autoremove shutdown -r now

sed -i 's/focal/jammy/g' /etc/apt/sources.list sed -i 's/ubuntu 20/ubuntu 22/g' /etc/apt/sources.list.d/zammad.list apt clean; apt update apt upgrade apt dist-upgrade pg_dropcluster --stop 14 main pg_upgradecluster 12 main /var/lib/postgresql/14/ apt autoremove shutdown -r now

apt-mark unhold zammad systemctl enable zammad apt update apt install zammad

# The following action is NOT reversible but is significantly faster. # Use at own descression - replace oldversion with your old version and newversion with your new version pg_upgradecluster --method=upgrade --link <oldversion> main /var/lib/postgresql/<newversion>/