Werk #10534: Check_MK discovery: Was not always able to discover new snmp checks

Component Checks & Agents
Title Check_MK discovery: Was not always able to discover new snmp checks
Date Mar 28, 2020
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.0.0i1 1.6.0p11
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The "Check_MK discovery" check was unable to discover entirely new check_types. Its discovery phase always relies on cached data, if available. Since the SNMP datasource only fetches the data it actually needs, there is no guarantee that all services will be discovered.

So the "Check_MK discovery" service failed to discover any interfaces, if the snmp host did not have any interfaces beforehand. Through WATO however, the discovery was successfull, since this mechanism may bypass the snmp caching entirely.

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