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Oct 26, 2026Priorities, Preemption and QoS: Making Sure Your Critical Pods Survive Saturation
When a node runs out of memory at 3 a.m., three different subsystems can decide which container dies:...
Oct 26, 20268 min read1 reactions0 comments
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Oct 26, 2026Hardening the Control Plane: Auditing a Cluster with kube-bench, kubescape and CIS Rules
Most clusters are installed once, pass a smoke test, and are never audited again. Meanwhile the...
Oct 26, 20269 min read1 reactions0 comments
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Oct 26, 2026Getting Started with Red Hat OpenShift: A Guide for Cloud and DevOps Beginners
Cloud-native technologies are changing how applications are built, deployed, and managed. For...
Oct 26, 20262 min read0 reactions0 comments
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Oct 24, 2026OpenShift Pod Running, but the Application Is Unreachable? Check the Service Port
A Pod showing Running does not prove that users can reach its application. One possible cause is a...
Oct 24, 20262 min read0 reactions0 comments
VDDK vs No VDDK: Why Your First MTV Migration Is Slow
My first migration from VMware to OpenShift Virtualization worked. It was also painfully slow: one 10...
Oct 23, 20262 min read0 reactions0 comments
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Oct 21, 2026OpenShift Virtualization: Running VMs and Pods on the Same Cluster Without Breaking Anything
Every platform team eventually hits the same wall: 80% of the workload is containerized, and the...
Oct 21, 202610 min read1 reactions0 comments
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Oct 21, 2026Red Hat Astronaut 2026: a self-hosted OpenShift and Ansible practice platform
An open-source study platform with 280 original practice questions, an admin and developer curriculum, and OpenShift tasks graded by running real oc c
Oct 21, 20264 min read0 reactions0 comments
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Oct 21, 2026Quotas, LimitRange and ResourceQuota on OpenShift: Industrializing Multi-Tenancy per Project
A shared OpenShift cluster behaves like a shared bank account: it works perfectly until someone...
Oct 21, 20269 min read1 reactions0 comments
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Oct 22, 2026Debugging a Stubborn CrashLoopBackOff: Ephemeral Containers, kubectl debug, and Init Pitfalls
Your deployment rolled out. Thirty seconds later, kubectl get pods shows CrashLoopBackOff and a...
Oct 22, 20269 min read2 reactions1 comments
VMware Concepts Mapped to OpenShift Virtualization: VMDK, Port Groups, vMotion and More
If you've run vSphere for years, OpenShift Virtualization looks foreign for about a day. Then you...
Oct 20, 20262 min read0 reactions0 comments
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Oct 19, 2026Stop Breaking Prod: PodDisruptionBudget and topologySpreadConstraints Done Right
A cluster upgrade is supposed to be boring. You click "upgrade", the control plane rolls, then the...
Oct 19, 202610 min read2 reactions0 comments
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Oct 16, 2026Routes, Ingress or Gateway API on OpenShift 4: Which to Choose and How to Migrate
Every OpenShift cluster ships with at least two ways to expose an HTTP service, and since 4.14 there...
Oct 16, 20268 min read1 reactions0 comments