Updated about 4 years ago by Jamila Khan

Debian 9 to 10

Update sources list

check which sources exist that point to stretch

cd /etc/apt
grep -nr stretch .

Edit the main list, and any others that come up

vim /etc/apt/sources.list
:%s/stretch/buster/g

Upgrade the system

Check for Necessary Disk Space

apt-get -o APT::Get::Trivial-Only=true dist-upgrade

Update the sources

apt-get update

Minimal Upgrade

 apt-get upgrade

Full Upgrade

apt-get dist-upgrade

Upgrade MySQL databases (if MySQL/MariaDB installed)

mysql_upgrade

Common problems

borg

mysql backup checking

Newest version of mariadb doesn't have separate databases for information schema or performance schema, so remove the old backups of those.

cd /var/backups/mysql/sqldump
rm information_schema.sql.gz
rm performance_schema.sql.gz

Icinga2

Need to re-replace the backupninja binary in /usr/sbin/backupninja https://redmine.palantetech.coop/projects/pt/wiki/Icinga2#Backupninja-monitoring

bang check

If using a script to check bang via wp, make sure the script uses the full path to /usr/local/bin/wp