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I gave a talk recently at GoTo Chicago on Why open source firmware is important and I thought it would be nice to also write a blog post with my findings. This post will focus on why open source firmware is important for security. Privilege Levels In your typical “stack” today you have the various levels of privileges. Ring 3 - Userspace: has the least amount of privileges, short of there being a
My top used shell command is |. This is called a pipe. In brief, the | allows for the output of one program (on the left) to become the input of another program (on the right). It is a way of connecting two commands together. For example, if I were to run the following: echo "hello" I get the output hello. But if I run: echo "hello" | figlet The figlet program, changes the letters in hello to look
I have realized recently that a lot of people think I am just a shill for Kubernetes and I am not. What I have done is write a few blog posts on some interesting problems to be solved in Kubernetes. But I would like to emphasize that those problems are pretty exclusive to the way Kubernetes was designed and you could easily build your own orchestrator without them. Use Containerd If you need an ex
There seems to be some confusion around sandboxing containers as of late, mostly because of the recent launch of gvisor. Before I get into the body of this post I would like to make one thing clear. I have no problem with gvisor itself. I think it is very technically “cool.” I do have a problem with the messaging around it and marketing. There is a large amount of ignorance towards the existing de
EDIT: See my post on a design doc for a multi-tenant orchestrator instead. I wrote this when an internal requirement was to use Kubernetes but I do not personally think you should use Kubernetes for this use case. Kubernetes is the new kernel. We can refer to it as a “cluster kernel” versus the typical operating system kernel. This means a lot of great things for users trying to deploy application
A lot of people seem to want to be able to build container images in Kubernetes without mounting in the docker socket or doing anything to compromise the security of their cluster. This all was brought to my attention when my awesome coworker at Gabe Monroy and I were chatting with Michelle Noorali over pizza at Kubecon in Austin last December. Here is pretty much how it went down: Gabe: I’d would
I recently started a job at Microsoft. In my first week I have already learned so much about Windows, I figured I would try to put it all into writing. This post is coming to you from a Windows Subsystem for Linux console! I'm headed to Seattle because I'M JOINING MICROSOFT, at the airport wearing this awesome shirt from @listonb & @Taylorb_msft ���� pic.twitter.com/8rnAg1dsPd — jessie frazelle (@
Over the past couple of years I have set out to create the ultimate Linux on the desktop experience for myself. Obviously everyone who runs Linux has their own opinions on things. What this post will outline is my ultimate Linux on the desktop experience. So just remember that before you get your panties in a knot on HackerNews because you live and die by Xmonad (I live and die by i3, fight me). F
My least favorite topic in the world is ‘Women in Tech’, so I am going to make this short but I think it’s something that needs to be said. This industry is fucked. Ever since I started speaking at conferences and contributing to open source projects I have been endlessly harassed. I’ve gotten hundreds of private messages on IRC and emails about sex, rape, and death threats. People emailing me say
Hello! If you are not familiar with Docker, it is the popular open source container engine. Most people use Docker for containing applications to deploy into production or for building their applications in a contained environment. This is all fine & dandy, and saves developers & ops engineers huge headaches, but I like to use Docker in a not-so-typical way. I use Docker to run all the desktop app
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