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Werk #19224: mk-sql: instance name is correctly detected for standard deployments

Component Checks & agents
Title mk-sql: instance name is correctly detected for standard deployments
Date Sep 4, 2026
Level Prominent 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
2.5.0p14
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p37
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When monitoring Microsoft SQL Server, the agent used a query variant intended for Azure SQL for every deployment. On standard (non-Azure) SQL Server this could determine the instance name incorrectly. For example, a default instance that had a FileStream share configured was reported incorrectly under that name, so instance verification failed and the instance was not monitored as expected.

Starting with this release, the agent selects the query variant appropriately. Instance names are now determined consistently and correctly for either SQL Server instances or Azure SQL.

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