Werk #15872: This Werk fixes misbehaved metrics after an upgrade

Component

Checks & agents

Title

This Werk fixes misbehaved metrics after an upgrade

Date

Oct 18, 2023

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.3.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0p13	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.1.0p36	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

After an upgrade various plugins metrics would misbehave, until eventually settling again. More specificly: All averaged metrics would forget the previously recorded values. As a result, the "averaged" metric follows the original one very closely. After a few values are recorded the desired smoothing effect of the averaging will start to show. The time it takes for the metric to stabilise depends on the configured or implemented weights ("Backlog in minutes").

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