Building Ephemeral Preview Environments for Every Pull Request
- Best Practices & Patterns, CI/CD Pipelines, Containers & Docker, DevOps Tools, Kubernetes
- January 9, 2026

Build secure, disposable Kubernetes preview environments for pull requests with GitHub Actions, GHCR, Argo CD ApplicationSet, Helm, isolated namespaces, and automatic cleanup.
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Design fast, secure CI/CD pipelines on AWS using GitHub Actions Runner Controller, ephemeral EKS runners, OIDC credentials, Karpenter capacity, and hardened trust boundaries.
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Build a resilient multi-datacentre application delivery platform with HAProxy Enterprise, Fusion Control Plane, GSLB, delegated DNS, VRRP, health checks, and OpenShift service discovery.
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In this step-by-step guide, we will configure HTPasswd authentication on an existing OpenShift 4.15+ single-node cluster. We’ll create user accounts, update the cluster’s OAuth settings to use HTPasswd, and verify access via both the CLI and the web console. We’ll also cover how to assign admin privileges to a new user and remove the default kubeadmin user for security.
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This guide will walk you through installing Docker on Red Hat Enterprise Linux 9 (or CentOS/Rocky/AlmaLinux 9), setting up n8n in a Docker container, and configuring SSL/HTTPS for secure access. We’ll use step-by-step instructions with explanations, sample commands, and outputs.
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Red Hat Advanced Cluster Management for Kubernetes (RHACM) is a powerful tool that lets you manage multiple OpenShift and Kubernetes clusters from one place. In this beginner-friendly guide, we will walk through installing RHACM version 2.4.x (or higher) on a bare metal OpenShift cluster using the OperatorHub, and then importing an existing cluster for management. The steps are straightforward and use the OpenShift web console for ease of use
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