Speaking at Chcon 2019

A few months ago, I saw the CFP for Chcon open up, and I thought back to how much I enjoyed Chcon last year, so I thought why not submit a talk this year.

I wrote up a submission, sent if off and a few weeks later I was delighted to hear that my talk was accepted! Since then I have been writing, editing and practising once a day for a fortnight, and I was happy with how things turned out.

On Thursday, I gave my talk The Story of the “Uncrackable” Lockbox, and Why Hackers Need to Work Alongside Developers, which is about the series of challenges u/cryptocomicon put forward for testing the security of his TimeLock software.

The talk has been uploaded to Youtube, which you can find below:

You can find a copy of the slides here.

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Getting Started With Juju to Deploy and Scale Software Effortlessly

The next piece of cloud software which has caught my attention is Juju, a tool which allows you to effortlessly deploy software to any cloud, and scale it with the touch of a button.

Juju deploys software in the form of Charms, a collection of scripts and deployment instructions that implements industry best practices and knowledge about that particular software package.

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Today we are going to take a deep dive into Juju, and explore how it works, how to set it up and how to deploy and scale some common software.

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Resolving Large NVMe Performance Degradation in the Ubuntu 4.4 Kernel

Have you ever wondered what a day in the life of a Sustaining Engineer at Canonical looks like?

Well today, we are going to have a look into a particularly interesting case I worked from start to completion, as it demanded that I dive into the world of Linux performance analysis tools to track down and solve the problem.

The problem is that there is a large performance degradation when reading files from a mounted read-only LVM snapshot on the Ubuntu 4.4 kernel, when compared to reading from a standard LVM volume. Reads can take anywhere from 14-25x the amount of time, which is a serious problem.

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Lets get to the bottom of this, and get this fixed.

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I Recently Became a Sustaining Engineer at Canonical!

A few months ago I made one of the largest decisions in my life - to leave my PhD position at the University of Canterbury and go out into the world and get a job.

I am wonderfully excited to announce that I am now a Sustaining Engineer at Canonical, the company which sponsors Ubuntu Linux.

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I started on the 11th of March 2019, and the last four months I have settled into my role nicely.

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Deploying a Ceph Cluster in Ubuntu 19.04

One of the major advancements in recent technology is the rise of cloud computing, and to be perfectly honest with you, I really don’t understand how the whole cloud thing works.

So, I’m going to start a series of blog posts where I will deploy some cloud services, and learn how they work.

Today we will learn how to deploy a Ceph cluster on Ubuntu 19.04 Disco Dingo, so get ready, fire up some VMs with me and follow along.

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We will cover what Ceph is, how to deploy it, and what it’s primary use cases are.

Let’s get started.

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