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The setting is named "Automatic disk space cleanup" and has these options:
- Delete files older than
used Used to configure the age of files that should be deleted automatically - not set by default (factory settings) - Delete additional files when disk space is below
used Used to configure minimum free disk space before deleting files and lets you configure the age of files to keep (not to be deleted) - not set by default (factory settings) - Cleanup abandoned host files older than
used Used to configure when to delete files of abandoned hosts - set by default (factory settings) to 30 days so that these files get deleted 30 days after the host has been removed from monitoring
Setup → General → Global settings → Automatic disk space cleanup
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You do not have to configure the execution of this manually; every Checkmk instance user has a cronjob for the diskspace feature, which gets executed 5 minutes after each hour.
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