I was able to reproduce the issue while running 12.04 as a master machine (one which runs nova boot <...>).
When trying to repro the issue with 14.04 as a master machine I observer this bug: https://bugs.launchpad.net/python-novaclient/+bug/1419859
$ ubuntu@strikov-bastion:~/bug-1424900$ nova boot --user-data=./my-userdata --key-name=strikov-yubikey --flavor=m1.small --image=57a76219-c397-4f7d-aca1-cd7d681eadbb vivid-20150224.5
ERROR: 'utf8' codec can't decode byte 0x8b in position 1: invalid start byte
I was able to reproduce the issue while running 12.04 as a master machine (one which runs nova boot <...>).
When trying to repro the issue with 14.04 as a master machine I observer this bug: /bugs.launchpad .net/python- novaclient/ +bug/1419859 strikov- bastion: ~/bug-1424900$ nova boot --user- data=./ my-userdata --key-name= strikov- yubikey --flavor=m1.small --image= 57a76219- c397-4f7d- aca1-cd7d681ead bb vivid-20150224.5
https:/
$ ubuntu@
ERROR: 'utf8' codec can't decode byte 0x8b in position 1: invalid start byte