Connecting to MySQL host DB from docker containers in host mode not work

Question

I try connect my mysql host DB from docker container by using host mode and I get the error:

docker run --rm -it --network=host mysql mysql -h 127.0.0.1 -utestuser -p

ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1:3306' (111)

The base of my work is stackoverflow-answer https://stackoverflow.com/a/24326540/1514029

My host mysql version is 8.0.25.

I tried in my.cnf bind-address = 0.0.0.0 and bind-address = 172.17.42.1

Every binding have the same problem.

I grant the testuser user access to 127.0.0.1 by statements

CREATE USER testuser@127.0.0.1 IDENTIFIED BY 'blah'
grant all privileges on *.* to testuser@127.0.0.1 with grant option

On docker bridge mode my connection work fine only on docker host mode it fails!

It must be a network problem??

Answer 1

you can use:
docker run --name mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -d mysql:8.0.25