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Can I set up an OpenStack cloud with just two physical servers?

asked 2013-09-20 16:08:25 -0500

Mierdin gravatar image

updated 2013-09-20 16:09:02 -0500

I have two 1RU pizza boxes with some quad-core procs and want to follow the following guide:

http://docs.openstack.org/grizzly/basic-install/apt/content/basic-install_controller.html

Pretty standard stuff, KVM for hypervisor, local storage in each (though i could probably use more)

However, the example gives three physical servers. My plan is to only use two servers, but move the network service into the "cloud controller", essentially making one server run all services, and the second server is just a compute node. I'll also likely move most of the hard drives out of the compute node to give the "main node" which has the storage services installed as much storage as possible, since the compute nodes will only be used for their RAM/CPU.

Does anyone see any problems with this approach?

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answered 2013-09-21 02:45:06 -0500

tim-bell gravatar image

You can run OpenStack on a single box without any problems. Depending on which Linux you're using, tools like devstack (for developers) or RDO (for RHEL-based distributions) give you a running environment in less than 20 minutes.

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answered 2013-09-21 12:23:53 -0500

Sirushti Murugesan gravatar image

Since the OpenStack components follow a shared-nothing policy, each component or any group of components can be installed on any server. So its up to you to plan where you want to install what depending on your use case.

Considering you'll be only using two nodes and assuming you have enough physical resources for your use case, it doesn't seem problematic AFAICT.

You could also try one of the many quick automated installation tools and test your idea out ;) Cheers.

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Asked: 2013-09-20 16:08:25 -0500

Seen: 400 times

Last updated: Sep 21 '13