Re: [Openstack-operators] [neutron] Operator feedback for Neutron clarifications from Barcelona

[Ihar Hrachyshka]

Clayton O'Neill  wrote:


I was the person with issues with 10's of l3-agents not working
properly on Liberty.  With about 100 l3-agents we had issues with them
just falling over without anything going on.  We moved to 20 l3-agents
and with that config we've had good luck unless you restart all of
them at the same time.  My understanding is that in Liberty there is a
single thread per neutrons-server (we run 3) that handles agent
traffic and that this was supposed to be fixed in Mitaka and newer,
but I haven't seen that confirmed.


The patch that implemented separate workers for agent state reports is:  
https://review.openstack.org/#/c/233605/ and was indeed included in Mitaka+.


Ihar

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[Openstack-operators] [neutron] Operator feedback for Neutron clarifications from Barcelona

[Leon Zachery (lzachery)]

Hi:

At the neutron operator feedback session during the operator summit [1] and the 
operator feedback session during the design summit [2], 2 issues were raised on 
which
we'd like to get some further clarification.

The first issue was the issue raised on the scale issues with thousands of 
agents, from [1] above:

  *   Issues with lots of agents (~1000) and rabbitMQ

  *   We've had problems on liberty with 10's of l3-agents, supposed to be 
better on mitaka+

  *   Related to this bug: https://bugs.launchpad.net/mos/+bug/1494416

The second issue is the hardware router integration issue, from [2] above:

 *   Enabling end users to create their own networks serviced by a hardware 
router

  *   Currently using provider networks, but that loses self service


[1] https://etherpad.openstack.org/p/BCN-ops-neutron-pain-points
[2] https://etherpad.openstack.org/p/ocata-neutron-end-user-operator-feedback

Feel free to unicast or broadcast a response and I will follow up with you.

Thanks,
Leon


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