Why does the Neutron documentation recommend three interfaces?
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.read more
Automatic configuration of Windows instances in OpenStack, part 1
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 …read more
Chasing OpenStack idle connection timeouts
The original problem
In order to gather some data on the problem, I ran the following simple test: