Re: [Xen-users] Xen private network across multiple physical servers

[Alexandre Kouznetsov <alk@xxxxxxxxxx>]

Hello.

El 26/11/13 02:05, Borja Martín escribió:
> Hi,
> I would like to configure a Xen private network where the guests use
> private addresses. So far I have setup the Dom0 instances and the vm's
> can access to the other guests inside the same server.
> Now my question is how can the guests reach the other guests that are
> located in other physical servers.
As Ian said, you definitely will need to set up some sort of tunnel 
between your physical hosts. Consider having a TAP device on each 
physical host. It should be handled up by some VPN software at the 
backend, and incorporated to a the same ethernet bridge as your DomU's 
private interfaces.
As a little bit more complex, but cleaner option, consider deploying a 
small DomU dedicated to this task on each physical server. Set up the 
VPN within the DomU, not a Dom0. This will make your configuration much 
more flexible and portable.
OpenVPN should work well. I also have been working with Tinc VPN for 
similar propose, it's mush simpler to set up, specially on small networks.
As a reference, XenServer call this "Cross-Server Private Network", you 
may check how is it organized there.
Greetings.

--
Alexandre Kouznetsov


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