Comment 3 for bug 1852175

Hi,

I have rerun the playbooks but the issue is the same. When I create a vm, it is failing eventually
with vif creation failed.

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2019-11-19 08:50:09.830 12956 INFO nova.virt.libvirt.driver [-] [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Instance destroyed successfully.
2019-11-19 08:50:09.833 12956 INFO nova.virt.libvirt.driver [req-068acb5f-d813-44d4-9b1f-14c20995b0a4 9ca30f42033f4e93b72f9be304f66726 e12b8e37797b4fbf8d0d6b28d4b61848 - default default] [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Deletion of /var/lib/nova/instances/de4b6e59-998b-465c-8e8c-e659619ca025_del complete
2019-11-19 08:50:09.921 12956 INFO nova.compute.manager [req-068acb5f-d813-44d4-9b1f-14c20995b0a4 9ca30f42033f4e93b72f9be304f66726 e12b8e37797b4fbf8d0d6b28d4b61848 - default default] [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Took 0.09 seconds to destroy the instance on the hypervisor.
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [req-068acb5f-d813-44d4-9b1f-14c20995b0a4 9ca30f42033f4e93b72f9be304f66726 e12b8e37797b4fbf8d0d6b28d4b61848 - default default] [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Failed to allocate network(s): VirtualInterfaceCreateException: Virtual Interface creation failed
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Traceback (most recent call last):
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] File "/openstack/venvs/nova-18.1.9/lib/python2.7/site-packages/nova/compute/manager.py", line 2133, in _build_and_run_instance
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] block_device_info=block_device_info)
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] File "/openstack/venvs/nova-18.1.9/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3133, in spawn
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] destroy_disks_on_failure=True)
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] File "/openstack/venvs/nova-18.1.9/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5693, in _create_domain_and_network
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] raise exception.VirtualInterfaceCreateException()
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025] VirtualInterfaceCreateException: Virtual Interface creation failed
2019-11-19 08:50:10.253 12956 ERROR nova.compute.manager [instance: de4b6e59-998b-465c-8e8c-e659619ca025]
2019-11-19 08:50:10.269 12956 ERROR nova.compute.manager [req-068acb5f-d813-44d4-9b1f-14c20995b0a4 9ca30f42033f4e93b72f9be304f66726 e12b8e37797b4fbf8d0d6b28d4b61848 - default default] [instance: de4b6e59-998b-465c-8e8c-e659619ca025] Build of instance de4b6e59-998b-465c-8e8c-e659619ca025 aborted: Failed to allocate the network(s), not rescheduling.: BuildAbortException: Build of instance de4b6e59-998b-465c-8e8c-e659619ca025 aborted: Failed to allocate the network(s), not rescheduling.
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I see messaging timeouts in the neutron agents on the compute nodes.