Part I: Is Docker Supported in OpenShift 4 and RHEL 8?

Part I: Is Docker Supported 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

Testing With Podman – Complete Uninstall/Reinstall

Testing With Podman – Complete Uninstall/Reinstall

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

Learning Container Engines by Demo

Learning Container Engines by Demo

Background So, this morning I had a call with some customers who are using Podman in RHEL 7.6 Beta. We got into a pretty good discussion about what a container engine does. Many people have tackled this subject before – Liz Rice has a great talk where she builds a container engine from scratch. I loved

Recap of Container Talks at DevConf US

Recap of Container Talks at DevConf US

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

What is sVirt and How Does it Isolate Linux Containers?

What is sVirt and How Does it Isolate Linux Containers?

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

OpenStack Summit 2018: Vancouver: Engineering Container Security: Addressing the Unique Security Challenges of Containers at Scale in a Multi-Cloud World

OpenStack Summit 2018: Vancouver: Engineering Container Security: Addressing the Unique Security Challenges of Containers at Scale in a Multi-Cloud World

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.

OpenStack Summit 2018: Vancouver: Linux Container Internals

OpenStack Summit 2018: Vancouver: Linux Container Internals

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.

Red Hat Summit 2018: San Francisco: Hitachi & Red Hat collaborate: Container migration guide

Red Hat Summit 2018: San Francisco: Hitachi & Red Hat collaborate: Container migration guide

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.