What
A quick note as I had difficulty finding a clear answer on this. I need a cron job setup where the permissions for a database user is required to do a backup (reading and copying data from a LIVE database) to a copy of the database (inaccessible via other users).

How?
I want to list 2 methods here. One to create a .sql file of the backup but another to copy the contents to a copy of the database accessible only by root and and this database "backuper" user. For both methods, I grant the following to the user doing the backup on the database I want a backup of:
GRANT SELECT, LOCK TABLES, EVENT, INDEX, REFERENCES, TRIGGER, SHOW VIEW ON 'my_live_db'.* TO 'mybackupuser'@'localhost' IDENTIFIED BY 'mybackupuser';

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