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Werk #16910: agent_hp_msa: session build up due to unsuccessful logout attempts

Component Checks & agents
Title agent_hp_msa: session build up due to unsuccessful logout attempts
Date Feb 6, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.6.0b1
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.5.0b1
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0p43
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

HP MSA session logout failed silently when calling the /logout/ endpoint together with the session key. Attempts to log out appeared to complete without error, but sessions remained open. The audit log showed messages such as:

... A[logout -] SSID:0 RC:5 M:[Invalid Session] ...

This behavior could lead to resource management issues by leaving sessions active unintentionally.

Note: this attempt was taken from a misleading support forum entry, since the logout feature itself is not documented.

This change now calls the /logout/ endpoint without the session key, which successfully closes sessions on 2060/2062/1060 controller appliances. Users do not need to modify their workflow but will benefit from reliable session termination and improved session management.

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