Werk #16897: chrony: wrong handling of 'n/a' values for 'Ref time (UTC)' and 'Stratum'

Component

Checks & agents

Title

chrony: wrong handling of 'n/a' values for 'Ref time (UTC)' and 'Stratum'

Date

Sep 25, 2024

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.4.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0p19	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0p36	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

A chrony status without a valid server also contains invalid values for 'Stratum' and 'Ref time', resulting in a 'Time since last sync' of 54 years 256 days being reported (which is the difference to epoc := 1.1.1970).

This change just skips reporting 'Stratum' and 'Time since last sync' if we don't have a valid server (address).

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