Comment 2 for bug 1547564

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Matt Riedemann (mriedem) wrote :

The error is when nova is trying to talk to ironic via the ironic client, there is an auth error:

TRACE nova.api.openstack.extensions raise exc.AmbiguousAuthSystem(e)
2016-02-19 15:38:04.601 TRACE nova.api.openstack.extensions AmbiguousAuthSystem: Must provide Keystone credentials or user-defined endpoint and token

So you need to check your configuration in nova.conf to make sure it has the proper credentials to be able to talk to ironic.