After Upgrade 2.1 Missing monitoring data for plugins

[Erni (Peter Ernicke)]

@robin.gierse

@Erni

The solution was to clear everything in “~/local/share/check_mk/checks/”. No worry data will be recreated automatically.

That is not correct. The files will not be regenerated. Files in that folder are custom checks, which you implemented and will be gone, if deleted. In the linked thread they overrode built-in checks, which is why deleting them solved the issue.

Oh yes, I’m sorry for that mistake. Thanks for correcting me. Indeed I see that was a different directory that I cleaned “~/var/check_mk/precompiled_checks/builtin/”.
This directory should be regenerated.