Werk #13226: SNMP caching bug leading to UNKNOWN services

Component Checks & Agents
Title SNMP caching bug leading to UNKNOWN services
Date Oct 1, 2021
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.1.0i1 2.0.0p13
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

An SNMP related caching bug could lead to services in the state UNKNOWN. While this has only been observed affecting interface services, it could also affect other services in principle. While the services reported "Item not found in monitoring data", a service discovery would report the services to be OK, and not resolve the issue. (Users that have a version prior to this werk can resolve the issue by removing the monitoring sites folder var/check_mk/snmp_cache/HOSTNAME)

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