I'm hitting this too, intermittently, on Icehouse
/var/log/nova/nova-api.log:2015-02-23 14:51:05.866 5072 INFO nova.api.openstack.wsgi [req-bccfea1b-1bba-4e79-ab11-2906d9cd0b8a b3c2566d88a44dc0948c569147e861a2 f88f2cc107914b90a86820252a71c270] HTTP exception thrown: No nw_info cache associated with instance
I'm hitting this too, intermittently, on Icehouse
/var/log/ nova/nova- api.log: 2015-02- 23 14:51:05.866 5072 INFO nova.api. openstack. wsgi [req-bccfea1b- 1bba-4e79- ab11-2906d9cd0b 8a b3c2566d88a44dc 0948c569147e861 a2 f88f2cc107914b9 0a86820252a71c2 70] HTTP exception thrown: No nw_info cache associated with instance