Scott's Weblog The weblog of an IT pro specializing in virtualization, networking, open source, and cloud computing

A Follow Up on Linux Network Namespaces

Some time ago, I introduced you to the idea of Linux network namespaces, and provided an overview of some of the commands needed to interact with network namespaces. In this post, I’ll follow up on that post with some additional information on using network namespaces with other types of network interfaces.

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Modifying QCOW Images with Guestfish

In this post, I’m going to talk about a way to modify QCOW2-based images without having to boot up a full-blown virtual machine based on the image. I found this process while trying to change the behavior of cloud-init on the official Ubuntu cloud images from Canonical.

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Learning NSX, Part 11: Reviewing OpenStack Integration Basics

Welcome to part 11 of the Learning NSX blog series, in which I provide a high-level overview of the basics on integrating VMware NSX into an OpenStack deployment using OpenStack Neutron. In case you’re just now catching up on this blog series, I encourage you to visit my Learning NVP/NSX page, which has a brief summary of all the posts in the series.

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A Quick Introduction to Docker

If you’ve been following trends in the “cloud” world, you’ve probably heard of Docker. In this post I’m going to provide a quick introduction to Docker, which might be helpful if you’re wondering what Docker is and why it’s garnered so much attention.

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Technology Short Take #39

Welcome to Technology Short Take #39, in which I share a random assortment of links, articles, and thoughts from around the world of data center-related technologies. I hope you find something useful—or at least something interesting!

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Learning NSX, Part 10: Adding a Service Node

Welcome to part 10 of the Learning NSX blog series, in which I will walk through adding an NSX service node to your NSX configuration.

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Learning NSX, Part 9: Adding a Gateway Service

Welcome to part 9 in the Learning NVP/NSX blog series, in which I’ll discuss adding a gateway service to a logical network.

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Using Curl to Interact with a RESTful API

It seems as if APIs are popping up everywhere these days. While this isn’t a bad thing, it does mean that IT professionals need to have a better understanding of how to interact with these APIs. In this post, I’m going to discuss how to use the popular command line utility curl to interact with a couple of RESTful APIs—specifically, the OpenStack APIs and the VMware NSX API.

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Installing Ubuntu Packages from a Specific Repository

In this article, I’ll show you how to install Ubuntu packages from a specific repository. It’s not that this is a terribly difficult process, but it also isn’t necessarily intuitive for those who haven’t had to do it before. I ran into this while trying to install an alpha release of LXC 1.0.0 for my recent post on automatically connecting LXC to Open vSwitch (OVS).

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Technology Short Take #38

Welcome to Technology Short Take #38, another installment in my irregularly-published series that collects links and thoughts on data center-related technologies from around the web. But enough with the introduction, let’s get on to the content already!

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