[ovs-discuss] Persistent Address on OVS Bridge

[Gurucharan Shetty]

On Tue, Mar 17, 2015 at 6:10 AM, Kyle Fazzari
<openvswitch at status.e4ward.com> wrote:
> Hello all.
>
> This may be a bit of a newbie question, for which I apologize. When I
> originally created my bridge with ovs-vsctl, I lost network
> connectivity. I quickly found this:
> http://openvswitch.org/pipermail/discuss/2014-April/013598.html , and
> simply setting the address on br0 worked fine.
>
> However, I want this to happen at boot time. I'm on Ubuntu 14.04. From
> what I've read, it sounds like OVS maintains its own database, which
> explains why after running
>
>     ovs-vsctl add-br br0
>     ovs-vsctl add-port br0 eth0
>
> when I reboot, br0 still exists.
correct.

>However, I'd like br0 to have an
> address when it comes back up. If it was a regular interface obviously
> I'd put this information in /etc/network/interfaces, but it's not.
> However, I've seen articles like this
> (http://www.opencloudblog.com/?p=240) that imply that I could
> configure this all via /etc/network/interfaces, but I didn't do it
> that way initially and now my database already has the bridge defined.
Official information about using 'interfaces' in section "Debian
network scripts integration":
https://github.com/openvswitch/ovs/blob/master/debian/openvswitch-switch.README.Debian


If I remember correctly, rebooting after 'interfaces' populated
properly with the bridge already created may not be a problem. If it
is a problem, delete your bridge. If you worry about loosing network
connectivity, change the ip address back to eth0 in the same line as
the del-br command.

You can also test your changes to interfaces with
(ifup --allow=ovs $list_of_bridges, ifdown --allow=ovs $list_of_bridges)


>
> What do I do? I just want to specify a static IP address for br0 when
> it comes up at boot, whether it's in my /etc/network/interfaces or
> not.
>
> Thank you!
>
> Kyle
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