If you don't recreate Neutron ports (just destroying VM, creating it as
new and attaching old ports), then you can distinguish between
interfaces by MAC addresses and store this in udev rules. You can do
this on first boot (e.g. in cloud-init's "startcmd" command), using
information from /sys/class/net directory.
On 7/31/17 9:14 PM, Morgenstern, Chad wrote:
Hi,
I am trying to programmatically rebuild a nova instance that has a
persistent volume for its root device.
I am specifically trying to rebuild an instance that has multiple
network interfaces and a floating ip.
I have observed that the order in which the network interface are
attached matters, floating ip attach to eth0 based.
How do I figure out which of the interfaces currently attached is
associated with eth0?
_______________________________________________
OpenStack-operators mailing list
OpenStack-operators@lists.openstack.org
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
--
Volodymyr Litovka
"Vision without Execution is Hallucination." -- Thomas Edison
_______________________________________________
OpenStack-operators mailing list
OpenStack-operators@lists.openstack.org
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
