Here is another Openstack question we see quite a bit of:

"Image is getting created. But when I launch instance I am not able to Login to the instance .Can you tell me what is default username and password for ubuntu-12.04.2-server?"

So here is the situation....the image does not have password login enabled. You will need to generate a keypair, boot with it, then 'ssh -i key ubuntu@x.x.x.x'

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