In Part I: Is Docker Supported in OpenShift 4 and RHEL 8? I explained that the the Docker daemon will not be supported in new Red Hat products, but that Docker images will be. The next question people always ask me is, “Why? I thought you guys love Docker? I’m confused.” There are many reasons
Continue Reading “Part II: Why Is There No Docker in OpenShift 4 and RHEL 8?”
TL;DR: Docker container images are supported in OpenShift 4 and RHEL 8, but the Docker daemon and client are not. Instead, containers will be run with CRI-O in OpenShift 4, and Podman in RHEL 8 – the same images can be used anywhere because of container standards. Cool, if that’s enough information for you and
Continue Reading “Part I: Is Docker Supported in OpenShift 4 and RHEL 8?”
This presentation is a 16 slide introduction to what must be thought about when building a production cloud. Proper image management is critical engineering task.
Background Are you both impressed with and intimidated by Kubernetes? It’s understandable. Kubernetes is moving fast, it’s super powerful, sophisticated, has a large upstream community, and tons of vendor interest, a huge user base, and is moving at the speed of light. This can make it intimidating. In short, it looks a lot like Linux
Background Sometimes it’s necessary to uninstall completely, and reinstall when testing software. This is something I have been doing with podman on RHEL 7.6 since about 6AM today 🙂 I figured it was worth capturing the instructions I have developed while testing user namespaces and rootless containers. This could make your life easier too. Complete
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Why Should I Care About DevSecOps? Are you a frustrated security professional, trying to get your organization to change (aren’t we all)? Or perhaps, you are trying to get management to value security more? Or maybe, you are a security conscious Developer (wait, do those actually exist? Yes, yes, they do) or Sysadmin who knows
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, and
Continue Reading “Hacker’s Guide to Installing OpenShift Container Platform 3.11”
Well, it’s that time of year when you do some clean up – and, that’s what I did while I waited for my OpenShift 3.11 install to finish. I have completely redesigned the WordPress tags to make it way easier to find stuff. This is a selfish endeavor but it should help others too. I
Background I was thinking about naming this article the POWER of Podman, or Podman on Power or Power Man or…but I digress. Confession, it’s been a long time since I played with a POWER system. The last time I did it, it was difficult to get Linux booted up. Now days, with Red Hat Virtualization,
Continue Reading “Rootless Podman on PowerPC (That’s a Mouthful)”
This presentation is a 16 slide introduction to what must be thought about when building a production cloud. Proper image management is critical engineering task.
Continue Reading “LISA 2018: Nashville: Linux Container Internals”