Comment 39 for bug 1846535

Hi Richard and Alexander,
Dan Watkins (driving the recent upload) will be around any minute and take a look.

Until then if you both could try to get to a failing instance (or its disk) somehow and get the log [1] which usually is at /var/log/cloud-init-output.log that would be great.
I know logging in is hard due to the issue, but you might see in [1] also options to e.g. send logs to a rsyslog service if you have one. Another alternative is to add a late_command that pushes the log somewhere else.