This past weekend, I had the pleasure of attending the first ever DevConf US 2018, which is the 1st annual, free, Red Hat sponsored technology conference for community project and professional contributors to Free and Open Source technologies at the Boston University in the historic city of Boston, USA. This was a technical conference in
It only takes a couple of quick google searches to realize that people have no idea what a container engine is. That’s understandable because It was a completely new concept back in 2013. Plenty of good people have tried and failed – see WTF is a Container (not deep enough) or What is Docker and why
Continue Reading “So, What Does a Container Engine Really Do Anyway?”
Container Engines are like wheel bearings, you should be able to replace them when they stop working. Also, you shouldn’t have to care about what brand they are. That’s what the Kubernetes Container Runtime Interface (CRI) aims to solve. CRI defines the API used to talk to container engines and all the major container engines
Background What is sVirt and, why does it matter for your containers? The short answer is, because sVirt is another layer of security and defense in depth is a good approach to security. The longer answer is, sVirt dynamically generates an SELinux label for every single one of your containers, which makes them less likely
Continue Reading “What is sVirt and How Does it Isolate Linux Containers?”
Are you looking at CRI-O vs. contianerd and wondering to yourself, which one should I use? If you are…. DON’T – that’s not actually something you should be thinking about. Here’s why…. When it comes to containers there are a ton of APIs in the ecosystem. Different users, community projects and commercial products have made
Continue Reading “Competition Heats Up Between CRI-O and containerd – Actually, That’s Not a Thing…”
When I answer technical questions, I try to treat people with respect. I assume that people are smart and know how to make good decisions if they have the right information. I try to give them facts, so that the architect part of their brain has the information it needs to make good decisions and
Background I’m here to tell you that somebody on the Internet is wrong! Actually, many people. If you have ever consulted Google for the words “Docker Architecture” you may have found a drawing that implies that Docker is some sort of blue box which sits on top of an operating system and runs containers. That
Background My problem, like most technologists, is that I only have a slice of my time to dedicate toward acquiring and maintaining knowledge about any given technology, product, project, tool, platform, etc. Split that with the fact that almost every CIO is preaching that we, as technologists, need to be closer to the business,
Continue Reading “Hacker’s Guide to Installing OpenShift Container Platform 3.9”
Many times, new technologies seem deceptively simple – but I have never found them to actually be simpler. I have always loved the deep technical underpinnings of computing and that’s why I often write about how things like Containers, Unikernels, and Serverless work under the covers. Recently, I was at DevConf in Brno, CZ and
Continue Reading “On Unikernels – Which is Heavier – VMs or OSes?”
Recently, I read another article that critiqued Kubernetes as having a steep learning curve. At conferences, I also hear a lot of people in the Kubernetes community talk about how we need to make it more easy to onboard people. While I think it’s a noble goal to make Kubernetes more usable, I don’t think
Continue Reading “Kubernetes is a 10 Ton Dump Truck That Handles Pretty Well at 200 MPH”