ubuntu unattended-upgrades don't start

Uwe Bartels

5/9/24, 9:19 AM

ubuntu 20.04 unattended-upgrades don't start. They should be started by the cronjob /etc/cron.daily/apt-compat.

The first part of the script prevents that:

# Systemd systems use a systemd timer unit which is preferable to
# run. We want to randomize the apt update and unattended-upgrade
# runs as much as possible to avoid hitting the mirrors all at the
# same time. The systemd time is better at this than the fixed
# cron.daily time

if [ -d /run/systemd/system ]; then
exit 0
fi

My question is: how do I convince the script to pass the if condition. I understand the comment but it quite abstract.

There is no package deployed that contains this directory.

# dpkg -S /run/systemd/system
dpkg-query: no path found matching pattern /run/systemd/system

And please don't write me simply to delete this directory. It contains files.

# ls -la /run/systemd/system 
total 4 
drwxr-xr-x  3 root root  80 May  1 16:28 . 
drwxr-xr-x 23 root root 540 May  1 16:28 .. 
-rw-r--r--  1 root root 299 May  1 16:28 netplan-ovs-cleanup.service 
drwxr-xr-x  2 root root  60 May  1 16:28 systemd-networkd.service.wants `

I expect the unattended-upgrades to start with the cronjob. I ran the script in debug with set -x I ran the finally referenced command in the script exec /usr/lib/apt/apt.systemd.daily. This work fine and starts the unattended-upgrade.

0 + 0

apt

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