How-To

A practical guide to installing and configuring the Ingress-Nginx Controller in Kubernetes, covering Helm and kubectl methods, cloud-provider annotations, and local testing workflows.

This guide explains how Persistent Volumes and Persistent Volume Claims work together in Kubernetes and shows how to reference a PVC inside a Pod definition. It also covers access modes and the difference between static and dynamic provisioning.

Learn how Kubernetes administrators can verify permissions and impersonate other users using kubectl auth can-i and the –as flag.

When a Java process is eating your CPU, you need to know exactly which thread is responsible. This guide walks through JVisualVM, jstack, top, and jvmtop to pinpoint the culprit.

Learn how to capture, read, and interpret Java thread dumps using JDK tools like jstack and jcmd. Covers thread states, CPU analysis, deadlock detection, and practical tools for spotting performance issues.

A quick fix for the ’not enough storage available’ error when running jstack on Windows, caused by the JVM running under the Local System Account. Two workarounds using Psexec or JMX remote monitoring.