I've just hosed a system. Working on pam-ldap on an Ubuntu box, I've run
pam-auth-update and told it to override local modifications (which had previously allowed for
sudo su, but I was having issues with
sudo <arbitrary command>.
After applying the settings I can no longer
su root. Now I'm pretty much locked out of the box and since it's on the cloud the concept of 'boot access is root access' doesn't really apply.
Any ideas how I can rescue the box?