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Werk #7182: Improved GUI extension error handling

Component User interface
Title Improved GUI extension error handling
Date Feb 24, 2019
Level Prominent Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.6.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When extending the standard GUI functionality, using either a manually installed local/share/check_mk/web plugin or a Check_MK extension package (MKP), exceptions may occur while loading the plugin.

In previous versions these exceptions caused the whole GUI to fail making it impossible to repair the problem using the GUI, for example via the extension package manager of the CEE/CME.

The extension related loading errors are now all catched and logged to the var/log/web.log instead of making the whole application fail. In addition to this, an error message will be shown on the "Extension packages" WATO page. We've also added a new Analyze configuration check "Broken GUI extensions" which will report a CRIT state when broken GUI extensions are found.

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