[QUESTION] VM rebooted during apt update

[frederikbosch]

I have a hardened 18.04 machine, made more than a year ago @ commit bd559d8. Last week there were two security updates for systemd, and this caused my VMs to be rebooted. I believe it was the udev/libudev update that caused the reboot. But by what setting is getting triggered? My guess would be that is a auditd setting. Do you have any idea?

[konstruktoid]

Hi @frederikbosch
Did the host reboot or halt? It could be the audit configuration that triggers a halt when then disk gets full.

[frederikbosch]

Hi @konstruktoid. Nope, it was the update of either udev or libudev that triggered the reboot. So I found out that udev is the device manager for the Linux kernel. Maybe updating the package causes the devices to be reloaded which is not allowed by the audit configuration?

[konstruktoid]

The audit system could cause a halt if the log partition gets full.
Otherwise I would check the needrestart configuration, but that shouldn't cause a reboot.

Any pre-reboot logs or dmesg messages?

[github-actions]

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