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From Wido den Hollander <>
Subject Re: cloudstack eth0
Date Thu, 23 Aug 2012 22:54:35 GMT

On 08/23/2012 09:16 PM, Gautam Sampathkumar wrote:
> Hi Wido,
>             Thanks for your response. Not sure what you mean w.r.t setting
> up the KVM agent. We're not doing anything with the KVM agent, except when
> we initially installed the qemu-kvm packages. Also, we're working through
> the command line and not using the WebUI.

Ah, so you are running cloud-setup-agent manually? With which arguments?

You can manually provide a different public, private and guest bridge/NIC.

> If we setup our own bridges and keep them separate from eth0, the
> cloud-setup-agent tool will figure out which ones to use correctly?

cloud-setup-agent has some issues and makes a couple of assumptions, so 
it could sometimes do weird things.

I'm working on improving cloud-setup-agent, but this will probably hit 4.0.


> thanks,
> Gautam
> On Thu, Aug 23, 2012 at 12:50 AM, Wido den Hollander <> wrote:
>> On 08/23/2012 02:53 AM, Gautam Sampathkumar wrote:
>>> Hi everyone,
>>>                I'm trying to get cloudstack running and I see that
>>> cloudstack
>>> configures a bridge interface cloudbr0 and modifies the eth0 interface to
>>> use the bridge. Is this a requirement or is there a way we can keep eth0
>>> separate from the cloudstack setup.
>> How are you setting up the KVM agent? I assume you add it through the
>> WebUI?
>> Make sure you set your traffic labels correctly and have the bridges
>> running already before adding the host.
>>   The reason being we're using some custom software for bridge networking
>>> and
>>> everytime we restart or play around with the bridge interface we lose
>>> connectivity to the machine since eth0 is the external interface as well.
>>> Is there some part of cloudstack configuration that tells it to use eth0?
>>> Any thoughts or ideas would be appreciated.
>> No, but it is the cloud-setup-agent tool which is executed when adding the
>> Agent to the cluster.
>> Wido
>>   thanks,
>>> Gautam

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