The mysqld instance has the connection control plugin enabled with these settings: connection_control_min_connection_delay=1000 connection_control_max_connection_delay=2000The minimum...

root@localhost[(none)]> show variables like '%connection_control_max_connection_delay%';

+-----------------------------------------+-------+

| Variable_name | Value |

+-----------------------------------------+-------+

| connection_control_max_connection_delay | 2000 |

+-----------------------------------------+-------+

1 row in set (0.00 sec)

root@localhost[(none)]> SET GLOBAL connection_control_min_connection_delay=3000;

ERROR 1231 (42000): Variable 'connection_control_min_connection_delay' can't be set to the value of '3000'