[2.1.0] Checkmk Werk 15870 created: Gracefully handle individual fails of cached sections

Title: Gracefully handle individual fails of cached sections Class: fix Compatible: compat Component: agents Date: 1696948219 Edition: cre Knowledge: doc Level: 1 State: unknown Version: 2.1.0p35 This changes the behavior of services processing cached data of the Linux, AIX, Solaris, FreeBSD and OpenWrt agent. Previous to this werk, a service would go to UNKNOWN if the execution of a cached section failed, reporting <i>"Missing data"</i> or <i>"Item not found in monitoring data"</i>. Those services now go stale, and only go to UNKNOWN after tripple the time of the caching intervall passed.