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Hi Édouard,

yes i see this mechanism on a paper[1] of Emilien and Sylvain before but
i think this is not working for LBaaS. The main problem are the
different spawned devices on the second network node.

[1]: http://de.slideshare.net/enovance/oi-a-4-whats-new-in-neutron





On 01.04.2014 11:21, Édouard Thuleau wrote:
> Just point you a blueprint [1] develop during the I release (but deferring
> to Juno) to bring L3 HA.
> It use VRRP mechanism with keepalived that you could reuse for LBaaS.
> It also uses conntrackd to synchronize connections between routers (master
> and slave). I don't know how to configure LB synchronization.
>
> [1] https://blueprints.launchpad.net/neutron/+spec/l3-high-availability
>
> Édouard.
>
>
> On Tue, Apr 1, 2014 at 10:52 AM, Heiko Krämer <hkraemer at anynines.com>
wrote:
>
>>
> Hi guys,
>
> i'm looking since days for a solution to solve the SPOF (single point of
> failure) of the lbaas. A easy solution with a config option is not
> available yet.
>
> The next option is to install/configure some not OpenStack related tools
> like pacemaker. I realise my L3-Agent faiover with an self writen RA for
> pacemaker to switch routers on broken l3 agent to the running on with
> the neutron API.
> The same can be workin with LbaaS but there's a problem again:
>
>  - No API function to switch a pool from agent A to agent b
>  - configurations of HAProxy replicate => this can be solvd with drbd or
> some shared network storage like NFS
>  - Devices are not the same => L3 switch router from agent A (broken) to
> agent B the devices names are not the same
>  -
>
> Is there any solution to solve this SPOF ? I mean a LB should not only
> scale/balancing your cluster/application the second task is the failover
> of broken members.
>
>
>
>
> Thx and cheers
> Heiko
>
>>
>>
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>

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