Failure to start pods: Apparmour not installed on Debian Bullseye

[jensens]

I use Hetzner Cloud machines with Debian Bullseye. Everything looked fine after the Ansible script executed, but a closer look revealed: Not a single pod came up successfully.

The solution was found by a look into the logs: apparmour_parser was not there.

I appended the following lines to roles/prereq/tasks/main.yml and the problem was gone.

 - name: Install Apparmour
  package:
    name: apparmor
    state: present

[mvhirsch]

You saved my life today.

Looks like there is another way: disable apparmor on boot: https://github.com/rancher/k3os/issues/702#issuecomment-849175078

[dereknola]

I was unable to test Hetzner Cloud machines, and the images I could find of Debian 11 had apparmor_parser installed, but I went ahead and added a clause to the preq task. Hopefully this addresses your case.