Werk #16926: Raritan PDU residual current: fix crash when only a critical threshold is reported

Component

Checks & agents

Title

Raritan PDU residual current: fix crash when only a critical threshold is reported

Date

Jul 21, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p10 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Raritan PDUs report residual current thresholds independently: by default a device may send only a critical level (e.g. 0.030 A) and no warning level.

Previously the Residual Current service crashed in this situation because the missing warning threshold was passed on as an unusable value.

The check now handles a partially configured threshold set. If only one of the warning or critical levels is present, the reported level is used for both, so that an alert is still raised instead of the check failing.

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