FYI - fixed in our environments by adding GRANT SLAVE MONITOR ON . TO ‘checkmk’@‘localhost’;
MySQL plugin does not detect replication. Checking plugin it requires additional permissions - documentation might need updating;
ERROR 1227 (42000) at line 1: Access denied; you need (at least one of) the SLAVE MONITOR privilege(s) for this operation
Welcome to the Checkmk community! Thanks for the hint.
Documentation ticket created. For such stuff you can also use the “Create issue on GitHub” link in the User Guide page. This creates an issue linked to the respective article. But as you can see it reaches the User Guide team anyway (either via @sara or our QA people scanning the forum).