Werk #19952: Netapp: Fix ValueError for managed NetApp ONTAP systems

Component	Checks & agents
Title	Netapp: Fix ValueError for managed NetApp ONTAP systems
Date	May 4, 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 Cloud, Checkmk Ultimate MT 2.5.0p2 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p29 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

For some NetApp ONTAP systems like AWS FSx for ONTAP, the ONTAP REST API does not expose node-level information; for this reason fetching the node list via the nodes API endpoint raises a ValueError.

The special agent now falls back to the cluster API endpoint to determine the minimum node version, so fan and temperature sections are still collected in this case.

To the list of all Werks