[ovs-discuss] [OVN] HA about OVN DB servers

Numan Siddique nusiddiq at redhat.com
Wed Aug 7 14:46:39 UTC 2019


On Wed, Aug 7, 2019 at 3:04 PM taoyunupt <taoyunupt at 126.com> wrote:

> Hi,Numan,Lucas,
>      Does OVN support that one Northbound DB associated server Southbound
> DBs, to overcome performance bottleneck of Southbound DB.The frame just as
> the following pic.
>       What is the plan of multi-master cluster of OVN DB servers?
>
>
>  CMS
>
>     |
>
>     |
>
> Northbound DB
>
>     |
>
>     |
>
>  --------------------------------------------------------------
>                                            |
>      |                                     |
>                               Southbound DB            Southbound DB
>       Southbound DB
>                                            |
>      |                                     |
>                                chassis nodes              chassis nodes
>              chassis nodes
>
> Thanks,
> Yun
>


Hi Yun,

OVN at this point doesn't support the model you described above.

ovsdb-server support RAFT with which you can have active/active deployment
of OVN DB servers.
Is that what you are looking at in a multi-master cluster ? Please take a
look at "man ovn-ctl" for more details on
how active/active cluster can be setup.

With the commit [1], OVN supports transport zones. I am not sure if you are
looking for this feature though.

[1] -
https://github.com/openvswitch/ovs/commit/3bb479d9aa52f0a25e941bb3156b5fc4ddca3c8c


Thanks
Numan
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