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Werk #19205: Veeam jobs: Fix flapping when agent plugin retries execution

Component Checks & agents
Title Veeam jobs: Fix flapping when agent plugin retries execution
Date May 12, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
3.0.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When a Veeam backup job was in a running state (Starting, Working, Postprocessing) and the agent plugin reported no result yet, the check previously defaulted to OK. On the next check cycle, once the job completed with a failure, the state changed to CRIT — only to flip back to OK on the following retry when the job restarted. This caused a flapping pattern: OK -> CRIT -> OK -> CRIT.

Starting with this release, the check preserves the previous check result while the job is still running and no definitive status is available. This prevents false OK states and eliminates the flapping cycle.

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