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TIL: Optimize Red Hat Quay

The default Quay configuration is a solid starting point for a standard, single-node or small private … TIL: Optimize Red Hat QuayRead more

by johngoh•August 8, 2025August 8, 2025•0
Posted in
  • DevSecOps

Useful OpenShift (oc) cli commands!

Here are practical oc commands you’ll use often, grouped by task. Replace placeholders in angle brackets … Useful OpenShift (oc) cli commands!Read more

by johngoh•August 8, 2025August 12, 2025•0
Posted in
  • Installation

How to Install Red Hat Quay and Secure with Nginx & Let’s Encrypt

In this blog post, I’ll walk you through installing Red Hat Quay using Podman containers, setting … How to Install Red Hat Quay and Secure with Nginx & Let’s EncryptRead more

by johngoh•August 8, 2025August 12, 2025•0
Troubleshooting Tailscale Operator: “Pods Forbidden Due to Security Context Constraints” on OpenShift 4.16-4.19
Posted in
  • Installation

Troubleshooting Tailscale Operator: “Pods Forbidden Due to Security Context Constraints” on OpenShift 4.16-4.19

Recently, while attempting to expose a Kubernetes workload in my cluster using the Tailscale Kubernetes Operator … Troubleshooting Tailscale Operator: “Pods Forbidden Due to Security Context Constraints” on OpenShift 4.16-4.19Read more

by johngoh•August 5, 2025August 22, 2025•0
Posted in
  • Installation

Setting Up OpenShift 4.18.21 with User Provisioned Infrastructure: Challenges and Lessons Learned

Deploying OpenShift 4.18.21 on a bare metal lab is a rewarding but deeply challenging project, especially … Setting Up OpenShift 4.18.21 with User Provisioned Infrastructure: Challenges and Lessons LearnedRead more

by johngoh•August 3, 2025•0
Posted in
  • Installation

TIL: Automating ACMEv2 Certificate Management: A Game Changer for Shorter-Lived Certificates

The digital landscape is constantly evolving, and a significant shift is the trend towards shorter-lived internet … TIL: Automating ACMEv2 Certificate Management: A Game Changer for Shorter-Lived CertificatesRead more

by johngoh•July 19, 2025•0
Installing Tailscale Operator on OpenShift 4.19.2
Posted in
  • Installation

Installing Tailscale Operator on OpenShift 4.19.2

I decided to try out tailscale operator on OpenShift 4.19.2 this weekend. It recently went GA … Installing Tailscale Operator on OpenShift 4.19.2Read more

by johngoh•July 13, 2025August 12, 2025•0
DSM 7.2.2-72806 Update 2 – Arc Loader 1.5.9
Posted in
  • Synology

DSM 7.2.2-72806 Update 2 – Arc Loader 1.5.9

I recently patched my DSM 7.2.1 to 7.2.2, and it involves upgrading the bootloader stored on … DSM 7.2.2-72806 Update 2 – Arc Loader 1.5.9Read more

by johngoh•February 3, 2025February 3, 2025•0
Posted in
  • Certification

RHCE EX294 Examination – Preparations Drafts

Course: Red Hat Enterprise Linux Automation with Ansible Exam Guide: https://www.youtube.com/watch?v=0HNuR1a6-9M&list=PLL_setXLS0tiYMipvQI4oUGkJwhOhn42J Don’t waste your time remember … RHCE EX294 Examination – Preparations DraftsRead more

by johngoh•February 3, 2025•0
Posted in
  • Certification

EX188 Red Hat Certified Specialist in Containers (RHCSC) exam – Troubleshooting Containers Tips & Materials

Disclaimer: These are my thoughts and process that I took. The sample scenario that I covered … EX188 Red Hat Certified Specialist in Containers (RHCSC) exam – Troubleshooting Containers Tips & MaterialsRead more

by johngoh•January 31, 2025February 3, 2025•0

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