Virtualization:

• Container Images and Hosts: Selecting the Right Components,
• Buildah Blocks – OCI Shell Game,

OpenShift:

• What OpenShift Online and Dedicated customers should know about Meltdown and Spectre,
• Prometheus Alerts on OpenShift,
• Secure your Kubernetes production cluster,
• APB Development Tutorial – MediaWiki 1.23 + PostgreSQL 9.5,
• Rocket.Chat Ansible Playbook Bundle Development & Deployment Tutorial,
• Structured application logs in OpenShift,
• Understanding Service Brokers on OpenShift, Part 1 (7min/2018),
• Red Hat Consulting DevOps and OpenShift Playbooks,

Miscellaneous:

• How to Install SQL Server 2017 on Red Hat Enterprise Linux with Ansible,
• PHP 7.2 for CentOS 7 armhfp,
• How To Measure the Working Set Size on Linux,
• Meltdown and Spectre: The response from CentOS.

Meltdown / Spectre:

• Reading privileged memory with a side-channel,
• Kernel Side-Channel Attacks – CVE-2017-5754 CVE-2017-5753 CVE-2017-5715,
• KPTI — the new kernel feature to mitigate “meltdown”,
• What are Meltdown and Spectre? Here’s what you need to know,
• Controlling the Performance Impact of Microcode and Security Patches for CVE-2017-5754 CVE-2017-5715 and CVE-2017-5753 using Red Hat Enterprise Linux Tunables,
• Nginx Benchmarks After CentOS Linux Kernel KPTI Meltdown & Spectre Fixes,
• CentOS 6.9 fails to boot in a Xen PV (Paravirtualized environment),
• Making sense of Meltdown/Spectre,

OpenShift:

• Containerizing SQL DB changes with Flyway, Kubernetes, and OpenShift,
• OpenFaaS on OpenShift,

Miscellaneous:

• Containers without Docker at Red Hat,
• Accelerate Network Automation with Aggregate Resources,
• CentOS Atomic Host 7.1712 Available for Download.

Openshift:

• Debug your OpenShift Java application with Microsoft VSCode and Red Hat CDK,
• Deploying OpenShift Applications to Multiple Datacenters,
• A First Look at KubeVirt,
• OpenShift Commons Gathering at Austin 2017 Recap with Videos and Slides,
• Machine Learning on OpenShift and Kubernetes,
• Up and Running with the OpenShift Ansible Broker,
• Advanced Networking with OpenShift: Accessing External Services using Egress Router,

Openstack:

• Using Ansible for Fernet Key Rotation on Red Hat OpenStack Platform 11,

Miscellaneous:

• Understanding Ansible Tower Isolated Nodes,

Belated Merry Christmas & Happy New Year 2018!

Openstack:

• An Introduction to Fernet tokens in Red Hat OpenStack Platform,
• OpenStack Heat Orchestration – Let’s build a whole neighborhood!

Openshift:

• DNS in Red Hat OpenShift Container Platform?
• Keeping your OpenShift Container Platform HAproxy Highly Available with Keepalived,

Miscellaneous:

• Introducing stapbpf – SystemTap’s new BPF backend,

OpenShift / Kubernetes / Container:

• Getting Started with Buildah,
• Securing Kubernetes Cluster Networking,
• OpenShift Container Platform Reference Architecture Implementation Guides,
• What’s New in OpenShift 3.7 – Service Catalog and Brokers,
• Wiping the Slate Clean with the OpenShift Container Platform,
• How to deploy Java application with Docker,
• Dynamically Creating Java Keystores in OpenShift,

Ansible:

• A developer’s shortcut to getting started with Ansible,
• Automate your RHV Configuration with Ansible,
• Nothing routine in IT should be done manually (34min/2017),

Miscellaneous:

• Getting started with llvm-toolset,
• Getting started with rust-toolset,
• What’s New in HAProxy 1.8,
• Red Hat releases OpenStack Platform 12,
• Free DDoS Protection Bootcamp,
• Fedora 27 Atomic Released,
• Fedora 26->27 Atomic Host Upgrade Guide,
• Fedora 27 Atomic Host is available on multiple architectures,
• Red Hat Enterprise Linux 7.4 available for ARM servers (24min/2017).

Effective December 1, 2017, Red Hat Certificates of Expertise exams (RHCoE) are renamed Red Hat Certified Specialist exams (RHCS).

I remember the first time I had to write a Kickstart file. It was a painful experience.

I tried to understand what the various keywords meant. Each attempt led me to a syntax error message. Documentation was difficult to find. I managed to succeed but after many tries.

Once I got a Kickstart file working, I had a base to build on. I used this site.

Recently I discovered that there was a Kickstart community repository where you can find various examples of configuration: some quite simple and others with more complicated features like Raid.

Even though, the Kickstart topic has been removed from the RHCSA curriculum, it is still a useful skill to have. With this repository, things now become easier to learn and use.

Openshift / Container:

• Kubernetes Deep Dive: Code Generation for CustomResources,
• Live Code Updates Using WebDav,
• Principles of Container-based Application Design,
• Deploying Applications from Images in OpenShift:
  • Part One: Web Console,
  • Part Two: Command Line,
  • Part Three: Importing Images,
• Kubernetes: A Pod’s Life,
• Deploy Monocular on OpenShift,
• First steps in integration of Windows and Linux Containers in OpenShift,
• How to configure persistent storage with OpenShift or Kubernetes for development environment,
• Evaluate Istio on OpenShift,
• Istio Traffic Management – Diving Deeper,
• How Full is My Cluster?
  • Part One: Capacity Management and Monitoring on OpenShift,
  • Part Two: Protecting the Nodes,
• Docker Authentication with Keycloak,

Gluster:

• Performance and Scalability of CNF 3.6 in OCP with Brick-Multiplex Enabled,

Miscellaneous:

• RPM Packaging Guide,
• PHP Configuration Tips,
• SSL Testing Tool,
• Monoliths to Microservices: Migrating Legacy Apps.