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Created July 4, 2025 14:12
Concise CheckMK 2.3+ Agent Plugin Writers Guide

CheckMK Plugin Development Guide

This guide contains the essential information needed to develop CheckMK plugins without referring to extensive documentation. Use this as a reference for future plugin development.

Plugin Architecture Overview

CheckMK plugins consist of two main components that run in different locations:

Agent Plugins (Host-side)

  • Location: /usr/lib/check_mk_agent/plugins/ on monitored hosts