[ubuntu-cloud] A Basic Eucalyptus Network

[Neil Soman]

On Thu, Jun 18, 2009 at 10:17 AM, Chase Adams<chase at curvedinfinity.com> wrote:
> Neil Soman wrote:
>>> Thanks for the reply Neil,
>>>
>>> So if I install the cloud and cluster controllers on the same computer,
>>> that server will act as a proxy for http traffic? In other  words, I can
>>> pretend like the controller is just one big computer? I don't believe
>>> this is mentioned in the documentation.
>>>
>>
>> I'm not sure I understand you correctly. Http traffic to/from VMs? No,
>> the front end does not control that. Your VMs will appear as "regular"
>> hosts. It is upto the application developer to decide what to do what
>> their collection of VMs.
>>
>>
> Ok, so what I was saying in the first mail is true then? -- If I wanted
> the VMs to act like one big computer, hosting a web application through
> a single IP, I'd need a load balancer to be behind that single IP and
> forward the HTTP traffic to the various VMs?
>
> In other words, Eucalyptus handles making the VMs contiguous and hooked
> up to the network (and so much more in a more complex environment), and
> I basically end up with (from a systems perspective) a bunch of machines
> with the exact same software installed on each?
>
Yes, that is correct. I thought you meant a load balancer for
Eucalyptus itself because that is not really required for your use
case. Application development and deployment is left up to the user.
Eucalyptus provides infrastructure as a service. However, with three
nodes, I wonder why you would want a load balancer for your app (for a
demo it makes sense).

hope that helps.
neil