Percona 8.0 MySQL how to change port?

Question

MySQL

It would seem that everything is simple, but the banal prescribing of the port=5550 parameter to the config file does not allow the service to start.
How to be? And is there any point in changing it for security reasons? (I'm using a self-signed certificate)

Answer 1

port=5550 prevents the service from starting

What is the error in the logs?

does it make sense to change it for security purposes?

Not good. It is better not to open the server to the Internet.

Answer 2

Mysql works fine over ssh tunnel too. Just set it up. Or there will be a lot of garbage in the logs on the left connections.