mysql 5.7 not supported?

[clarkk]

When connecting to mysql 8 it works, but can't connect to mysql 5.7

import (
	"database/sql"
	_ "github.com/go-sql-driver/mysql"
)

var dsn = "root:xxx@/mydb?charset=utf8"

	var err error
	db, err = sql.Open("mysql", dsn)
	if err != nil {
		log.Fatal("Could no parse DB DSN: "+err.Error())
	}
	
	err = db.Ping()
	if err != nil {
		log.Fatal("Unable to connect to DB: "+err.Error())
	}

Error 1130: Host '127.0.0.1' is not allowed to connect to this MySQL server

[clarkk]

If I connect with unix socket it seems to work unix(/var/run/mysqld/mysqld.sock)