A Comparison of Linux Container Images

A Comparison of Linux Container Images

  Updated 06/02/2020 Understanding Container Images To fully understand how to compare container base images, we must understand the bits inside of them. There are two major parts of an operating system – the kernel and the user space. The kernel is a special program executed directly on the hardware or virtual machine – it

Setting Up RHEL 8 on Linode

Background I have used Linode for about 10 years now because the service and price are great. They are one of the most automated cloud providers and they invest in tools to do things like resizing existing VMs. It’s super useful for lab environments and experiments.  As such, I wanted to use Linode for my

A Concise Introduction to DevSecOps

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

Hacker’s Guide to Installing OpenShift Container Platform 3.11

Hacker’s Guide to Installing OpenShift Container Platform 3.11

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

Who is Fatherlinux?

Who is Fatherlinux?

Over the years I have realized that there is a bit of confusion when I first tell people my Twitter handle is @fatherlinux. People ask things like, “what about mother Linux?” or “Perhaps you should change your name to Grandpa Linux now that you have been doing this for so long?” They often think the

Core Builds in the Age of Service

Core Builds in the Age of Service

Background As legacy applications are redesigned for the cloud, they are converted to run in a stateless manner. In newly designed applications, data flows between application code, messaging infrastructure, caches and databases seamlessly even during individual node failures of any one subsystem. When an active node fails, a new one is instantiated and placed back

Software Collections and the Developer Community

Software Collections and the Developer Community

Background Red Hat Software Collections 1.2 was recently released and with it, comes a different message to developers on Red Hat Enterprise Linux and CentOS. Unless you need 10 years of support for your application stack (MySQL, PHP, Ruby, Rails), use Red Hat Software Collections (RHSCL). RHSCL provides developers with the latest version of tools

A Practical Introduction to the Docker Registry Server

Background One of the key advantages of using Docker is it’s centralized image management server, called a Registry Server. The Docker project, as well as Red Hat, maintain public registry servers which host supported images. The Docker project also provides an Open Source version of the Registry server which can be deployed on premise in

Deep Dive: Rebasing vs. Backporting

Background Impetus Recently, I saw a discussion was started, asking about the importance of the operating system on the LinkedIn OpenStack group: Ubuntu can overtake Red Hat in private clouds because the OS doesn’t really matter I found the conversation wildly interesting because several people expressed reasons for why they think the operating system does