SET @global=@@global.connect_timeout; # # MDEV-21961 Bind CONNECTION ADMIN to a number of global system variables # # Test that "SET connect_timeout" is not allowed without CONNECTION ADMIN CREATE USER user1@localhost; GRANT ALL PRIVILEGES ON *.* TO user1@localhost; REVOKE CONNECTION ADMIN ON *.* FROM user1@localhost; connect user1,localhost,user1,,; connection user1; SET GLOBAL connect_timeout=10; ERROR 42000: Access denied; you need (at least one of) the CONNECTION ADMIN privilege(s) for this operation SET connect_timeout=10; ERROR HY000: Variable 'connect_timeout' is a GLOBAL variable and should be set with SET GLOBAL SET SESSION connect_timeout=10; ERROR HY000: Variable 'connect_timeout' is a GLOBAL variable and should be set with SET GLOBAL disconnect user1; connection default; DROP USER user1@localhost; # Test that "SET connect_timeout" is allowed with CONNECTION ADMIN CREATE USER user1@localhost; GRANT CONNECTION ADMIN ON *.* TO user1@localhost; connect user1,localhost,user1,,; connection user1; SET GLOBAL connect_timeout=10; SET connect_timeout=10; ERROR HY000: Variable 'connect_timeout' is a GLOBAL variable and should be set with SET GLOBAL SET SESSION connect_timeout=10; ERROR HY000: Variable 'connect_timeout' is a GLOBAL variable and should be set with SET GLOBAL disconnect user1; connection default; DROP USER user1@localhost; SET @@global.connect_timeout=@global;