[Openstack] [Neutron][DVR] Network issue during migration
Brian Haley
haleyb.dev at gmail.com
Fri Mar 23 16:05:55 UTC 2018
On 03/21/2018 05:38 PM, Mārtiņš Jakubovičs wrote:
> Hello Brian,
>
> Yes, after migration it works well, but during migration it is not.
Ok, so somehow neutron is configuring things too early, updating the
floating IP (and your ARP cache), before the instance has finished
migration. It would be good if you could look at the nova and neutron
logs to help piece this together - i.e. when is nova telling neutron to
configure the migrated port, etc.
Also, without looking at what's changed since Newton, trying a live
migration on plain Ocata (or Pike) would be a good data point, just in
case there was a bug somewhere that is now fixed.
Thanks,
-Brian
> On 2018.03.21. 23:37, Brian Haley wrote:
>> On 03/21/2018 04:52 PM, Mārtiņš Jakubovičs wrote:
>>> Dear all,
>>>
>>> I faced issue when migrating instance by live-migration +
>>> block-migration guests floating IP became inaccessible. My setup are
>>> OVS + DVR. Currently upgrading from Newton to Ocata.
>>>
>>> Looks like when migration starts, in destination host neutron
>>> configures floating IP so traffic start to go to destination host but
>>> instance are still in source host.
>>>
>>> Does live migration work correctly with DVR?
>>
>> It should. Does the floating IP work after migration is finished? Is
>> it just temporary?
>>
>> -Brian
>>
>
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