I want to build a UML cluster, to provide a homogeneous cluster across
a series of heterogeneous machines. And I only have root access on a
single box in this set of machines. I can't even get UML installed as
a root user on all but this one box, so forget about installing
uml_net and friends sitewide as setuid root. I'm building UML from
scratch and am able to boot some simple root fs that I downloaded,
with no networking.
Now, I am not sure which networking system to use. I would like to
have each of my UML virtual machines be able to talk to one another,
and additionally to be able to get out to the internet somehow. I
plan on running a single UML virtual machine per physical machine.
What are my options? It seems that each of the following have
problems in my case:
* ethertap - needs setuid helper
* TUN/TAP - needs setuid helper
* Multicast - machines can see each other, but can't get out
* a switch daemon - needs root access (for the preconfigured tap)
to get out via -tap
* slip - seems to need setuid helper uml_net
* slirp - as far as I can tell, this does not assign a physical
address so I don't think I could create a cluster where each
node can access each other node
Am I missing something? Is it true that what I am asking for is
impossible with the current set up? Or is there some variation on one
of the above that will meet my requirements?
Thanks in advance,
--
Benjamin
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