Re: problems upgrading an Ubuntu EC2 node

Posting the fix to list, in case someone searches the archives:

Turns out that there were some leftover upstart files in /etc/init/, which
apparently belonged to an old package (lxcguest) which had been uninstalled
but left configured (possibly a remainder from a previous upgrade).
Moving them away (by attaching and mounting the root volume onto another,
live, machine) made the upgraded-ubuntu-machine bootable.

The solution was taken from this link (which also details the diagnosis):

http://www.nicksherlock.com/2015/01/my-ec2-server-wouldnt-boot-after-apt-get-dist-upgrade-i-fixed-it/

Thanks Shimi for the quick response and for pointing out that link to me.

AA

p.s. I still have no idea why attaching this volume to a stopped machine
had made it unbootable (upstart cannot be affected by extra disks that are
not even automounted via fstab).

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