A random collection of OpenStack Tools

Tue 12 November 2013 by Lars Kellogg-Stedman Tags openstack

I've been working with OpenStack a lot recently, and I've ended up with a small collection of utilities that make my life easier. On the odd chance that they'll make your life easier, too, I thought I'd hilight them here.

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Why does the Neutron documentation recommend three interfaces?

Mon 28 October 2013 by Lars Kellogg-Stedman Tags openstack neutron networking

The documentation for configuring Neutron recommends that a network controller has three physical interfaces:

Before you start, set up a machine to be a dedicated network node. Dedicated network nodes should have the following NICs: the management NIC (called MGMT_INTERFACE), the data NIC (called DATA_INTERFACE), and the external NIC (called EXTERNAL_INTERFACE).

People occasionally ask, "why three interfaces? What if I only have two?", so I wanted to provide an extended answer that might help people understand what the interfaces are for and what trade-offs are involved in using fewer interfaces.

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Automatic configuration of Windows instances in OpenStack, part 1

Sun 04 November 2012 by Lars Kellogg-Stedman Tags openstack windows

This is the first of two articles in which I discuss my work in getting some Windows instances up and running in our OpenStack environment. This article is primarily about problems I encountered along the way, while the second article focuses on the mechanism I eventually put in place.

Motivations …

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Chasing OpenStack idle connection timeouts

Mon 30 July 2012 by Lars Kellogg-Stedman Tags openstack networking

The original problem

I've recently spent some time working on an OpenStack deployment. I ran into a problem in which the compute service would frequently stop communicating with the AMQP message broker (qpidd).

In order to gather some data on the problem, I ran the following simple test:

  • Wait n …
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