Werk #19556: Fix Redfish agent error on BMCs that omit Systems from service root

Component

Checks & agents

Title

Fix Redfish agent error on BMCs that omit Systems from service root

Date

Mar 31, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.5.0b3 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p26 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, the Redfish special agent reported "probably not a Redfish computer system - missing Systems or Chassis information" on certain BMCs (e.g. LITEON) that don't advertise the Systems or Chassis endpoints in their /redfish/v1 service root response — even though those endpoints exist and respond normally.

The agent now probes the standard paths /redfish/v1/Systems and /redfish/v1/Chassis directly before giving up.

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