Werk #18691: netapp_ontap_aggr: handle missing aggregates gracefully

Component	Checks & agents
Title	netapp_ontap_aggr: handle missing aggregates gracefully
Date	Oct 1, 2025
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.5.0b1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.4.0p14 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.3.0p39 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

The NetApp ONTAP special agent could crash with the following error:

File "/omd/sites/main/lib/python3.12/site-packages/netapp_ontap/utils.py", line 78, in on_api_fail
    raise NetAppRestError(cause=erro) from None
netapp_ontap.error.NetAppRestError: Caused by HTTPError('404 Client Error: Not Found for url: https://host:443/api/storage/aggregates/aggr_id?fields=name%2Cspace.block_storage.available%2Cspace.block_storage.size'): entry doesn't exist(!!)

This occurs when the aggregate cannot be queried, for example, if it is connected to a defective machine.

From this werk, the agent will skip that aggregate and continue, and the respective service will enter a WARN state, indicating a missing item.

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