Werk #19194: Windows MySQL plugin: fix mysql.exe binary detection for non-default installations

Component	Agent bakery
Title	Windows MySQL plugin: fix mysql.exe binary detection for non-default installations
Date	Mar 31, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.5.0b4 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0p26 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The Windows MySQL agent plugin (mk_mysql.ps1) failed to locate the mysql.exe client binary when MySQL was installed to a non-default path or registered its service without the .exe extension on the daemon binary.

The following problems have been fixed:

• Service binary registered without .exe extension (e.g. mysqld instead of mysqld.exe)
• Unquoted installation paths fix: the path extraction regex no longer greedily captures trailing command-line arguments as part of the binary path
• No longer incorrectly matches names that share the mysqld prefix, such as mysqldump
• Lack of binary: instead of producing no output silently, the plugin now emits a visible error message so the problem can be diagnosed

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