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

A Handy CLI Tool for Working with JSON

While I was at Kubecon this past week, one of the presenters showed off a handy CLI tool for working with JSON. It’s called jq, and in this post I’m going to show you a few ways to use jq. For the source of JSON output, I’ll use the OpenStack APIs.

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Kubecon Liveblog: Opening Keynote

This is a liveblog of the opening keynote at the inaugural Kubernetes conference, Kubecon, taking place this week at the Palace Hotel in San Francisco. Brendan Burns, Senior Staff Software Engineer at Google, is delivering the opening keynote. Burns is a co-founder of the Kubernetes project.

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Changing Passwords with cloud-init

Generally speaking, when launching instances in a cloud environment (such as AWS or an OpenStack-based cloud), the preferred/default way of accessing that instance is via SSH using an injected SSH key pair. There are times, though, when—for whatever reason—this approach won’t work. (I’ll describe one such situation below.) In such instances, it’s possible to configure cloud-init, the same tool used to inject SSH keys, to change passwords for user accounts. Here’s how.

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Calling All Switchers

Are you a switcher? That is, are you someone who has transitioned from one IT discipline to an entirely new IT discipline? Perhaps you were a storage gal for a long time, and now you’ve successfully transitioned into a networking career. Maybe you used to be a Windows admin, and now Linux is your thing. Or perhaps you were a networking guy, and now you’re coding like a madman. If this sounds like you, please read on!

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A Quick Look at Carina

Today at the OpenStack Summit in Tokyo, Rackspace announced Carina, a new containers-as-a-service offering that is currently in beta. I took a few minutes to sign up for Carina today and work with it for a little while, and here is a quick introduction.

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OpenStack Summit 2015 Day 2 Keynote

Mark Collier, COO of the OpenStack Foundation, takes the stage to kick things off. He starts with a story about meeting new people, learning new things, and sharing OpenStack stories, and encourages attendees to participate in all of these things while they are here at the Summit.

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OpenStack Summit 2015 Day 1 Keynote

This is a liveblog of the Day 1 keynote at the OpenStack Summit here in Tokyo, Japan. As is quite often the case at conferences like this, the wireless network is strained to its limits, so I may not be able to publish this liveblog until well after the keynote ends (possibly even later in the day).

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Technology Short Take #55

Welcome to Technology Short Take #55! Here’s hoping I’ve managed to find something of value and interest to you in this latest collection of links and articles from around the web on networking, storage, virtualization, security, and other data center-related technologies. Enjoy!

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Adding an Interface to an OpenStack Instance After Creation

In this post I’ll share a few commands I found for adding a network interface to an OpenStack instance after launching the instance. You could, of course, simply launch the instance with multiple network interfaces from the very beginning, but these commands are handy in case you messed up or in case the requirements for the instance changed after it was launched. Please note there’s nothing revolutionary or ground-breaking in the commands listed here; I’m simply trying to help share information in the event others will find it useful.

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Prayer Time at Tokyo Summit

This is something I’ve had the pleasure of organizing at VMworld over the last couple of years, and I’d like to start doing it at the OpenStack Summits as well. So, next week in Tokyo, I’d like to offer Christians attending the Summit the opportunity to gather together for a brief time of prayer before the day’s activities get started.

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