Description:
Setting the admin_port on a used port does not throw errors despite failing to be used.
Another problem is that it is show in the variables:
mysql> show global variables like '%port%';
+--------------------------+-------------+
| Variable_name | Value |
+--------------------------+-------------+
| admin_port | 21145 |
| large_files_support | ON |
| mysqlx_port | 18031 |
| mysqlx_port_open_timeout | 0 |
| port | 45000 |
| report_host | single-8031 |
| report_password | |
| report_port | 8031 |
| report_user | |
| require_secure_transport | OFF |
+--------------------------+-------------+
10 rows in set (0.01 sec)
If I try to change standard port to a busy port:
2024-02-13T18:30:37.807124Z 0 [ERROR] [MY-010262] [Server] Can't start server: Bind on TCP/IP port: Address already in use
2024-02-13T18:30:37.807144Z 0 [ERROR] [MY-010257] [Server] Do you already have another mysqld server running on port: 21145 ?
How to repeat:
Set admin_port to a busy port.
Suggested fix:
Throw an error similar to the error when setting the standard port.
