[Openstack] Adding an extra compute node

Cristian Falcas cristi.falcas at gmail.com
Thu Sep 26 13:57:18 UTC 2013

layer 3 is created only on the network node. On compute nodes you have
layer 2 only (openvswitch)

The gre tunnels should take care of everything magically :).

Where are the instances attached (that should be tap$id and source
qbr$id)? Do you use dhcp?

On Thu, Sep 26, 2013 at 4:40 PM, Brandon Adams
<brandon.adams at newwave-technologies.com> wrote:
> Hi all,
> I'm trying to add a second compute node my dev cluster, I've already got one
> controller node and one network/compute node running perfectly. I've
> installed all of the necessary packages and everything seems to be running
> smoothly. However, when I create a private network and subnet, they don't
> seem to be applied to the extra node. That is, I can see the extra
> interfaces when I run ovs-vsctl show on the network/compute node, but not on
> the dedicated compute node. There are GRE tunnels which I assume connect the
> two nodes across the management network, and instances boot up on the new
> node. They just can't find the internal network and thus can't be reached at
> all. I'm running Grizzly on Ubuntu, using Quantum OpenVSwitch with GRE
> tunnels. I've already fixed an error regarding brcompatd running on both
> nodes,  so I'm wondering what my next step is. Thanks.
> Brandon
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