> have to follow the procedure for restoring from backup or re-mounting the root volume on an alternate house to revert the kernel version being run.
Or add `systemd.mask=docker.service` to your boot parameters to prevent Docker from starting.
Or add `systemd.mask=docker.service` to your boot parameters to prevent Docker from starting.
Failing that you could try the “single” directive and poke other configurations once booted in that mode.
A faf to be sure, but hopefully viable options (assuming the interactive menu hasn't been disabled to save a few seconds off boot time!).
There are options even without out of band management. You can choose to configure your systems with PXE -- if the installation ever fails, it can boot into a recovery environment over the network.
Alternatively, you umount the drive, attach it to another machine, chroot into it, fix grub or whatever, reverse the process and boot again. It's a few steps, but can be done in a few minutes with practice.
while true; do ssh <servername> sudo mv /usr/bin/containerd /usr/bin/containerd.backup ; sleep 1; done
While rebooting the system