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Werk #18093: agent_graylog: Return CRIT status in CheckMK Agent service if Graylog API is unreachable

Component Checks & agents
Title agent_graylog: Return CRIT status in CheckMK Agent service if Graylog API is unreachable
Date May 26, 2025
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p3 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.3.0p34 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The Graylog special agent now exits with a non-zero status when the Graylog API is unreachable. This causes the CheckMK Agent service to report a CRIT state, ensuring users are notified of connectivity issues. Previously, the agent exited with code 0 regardless of API availability, leading to false-positive OK states even when Graylog was down.

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