Automatically Restart Containerd on Failure

By default the containerd systemd unit does not restart when failure occurs. This can be easily changed by creating a systemd drop-in that directs the containerd.service unit to restart on failure.

$ sudo mkdir -p /etc/systemd/system/containerd.service.d
$ sudo vi /etc/systemd/system/containerd.service.d/10-on-failure.conf

/etc/systemd/system/containerd.service.d/10-on-failure.conf

[Service]
Restart=on-failure

$ sudo systemctl daemon-reload

$ sudo systemctl restart containerd.service