Fix Jenkins java.lang.OutOfMemoryError: PermGen Space (Controller, Agents, and Build Tools)
Jenkins PermGen errors are usually caused by JVM memory limits set in the wrong place. This guide shows where to configure memory flags for controllers, agents, and build tools, plus how to handle Java 8+ where PermGen was replaced.
Jenkins Troubleshooting Guide: Fast Triage, Log Analysis, and Common Failure Fixes
A practical Jenkins troubleshooting guide for DevOps teams: find the right logs first, separate controller vs. agent vs. job failures, and resolve common outage patterns quickly.