More info, instance is an empty directory, and there's instances too, with the subdirs below:
$ ls -al /var/lib/cloud total 36 drwxr-xr-x 9 root root 4096 Feb 12 2017 . drwxr-xr-x 52 root root 4096 May 3 23:46 .. drwxr-xr-x 2 root root 4096 May 14 2019 data drwxr-xr-x 2 root root 4096 Oct 14 2016 handlers drwxr-xr-x 2 root root 4096 Feb 12 2017 instance drwxr-xr-x 4 root root 4096 Feb 12 2017 instances drwxr-xr-x 6 root root 4096 Oct 14 2016 scripts drwxr-xr-x 2 root root 4096 Oct 14 2016 seed drwxr-xr-x 2 root root 4096 Oct 14 2016 sem $ ls -al /var/lib/cloud/instance total 8 drwxr-xr-x 2 root root 4096 Feb 12 2017 . drwxr-xr-x 9 root root 4096 Feb 12 2017 .. $ ls -al /var/lib/cloud/instances total 16 drwxr-xr-x 4 root root 4096 Feb 12 2017 . drwxr-xr-x 9 root root 4096 Feb 12 2017 .. drwxr-xr-x 5 root root 4096 Feb 12 2017 i-d04c5fc8 drwxr-xr-x 3 root root 4096 Feb 12 2017 iid-datasource-none -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1927029 Title: ua attach command fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/1927029/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs