WARNING - Do not do apt-get dist-upgrade

[pb66 (Paul)]

@glyn.hudson

Maridb will fail to start after running sudo apt-get dist-upgrade to fix edit:

/lib/systemd/system/mariadb.service the value:

ProtectHome=true

to

ProtectHome=false

NO PLEASE DO NOT DO THIS!

It is the reason the fault occurred in the first place.

The correct “fix” is to

sudo systemctl edit mariadb.service

then to that blank file add

[Service]
ProtectHome=false

and save with ctrl-x, y, enter.

Then reload the service and restart

sudo systemctl daemon-reload
sudo systemctl restart mariadb

This will ensure the same thing doesn’t happen again next time there is an upgrade to the default service unit, regardless of the upgrade command you chose.