ID: 7342 Title: Removed legacy_checks configuration variable Component: Core & setup Level: 1 Class: Bug fix Version: 1.6.0i1 The long time deprecated configuration variable <tt>legacy_checks</tt> has been removed now. It was replaced by the <tt>custom_checks</tt> option which is working a bit different. In case you configured Check_MK only via WATO you will not be affected by this issue, since legacy_checks could only be configured directly in the configuration files. In case you need to migrate your configuration, you could move the configuration to the WATO ruleset "Classical Active and Passive Monitoring Checks". If you need to migrate the configuration by hand have a look at the CMC migration documentation (https://mathias-kettner.com/cms_cmc_migration.html#legacy_checks) which describes the steps.