Come reimpostare la password di root in MySQL 8.0.11?

come qui dice:

1.se sei in modalità skip-grant-tables
in mysqld_safe:

UPDATE mysql.user SET authentication_string=null WHERE User='root';
FLUSH PRIVILEGES;
exit;

e poi, nel terminale:

mysql -u root

in MySQL:

ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';

2.non in modalità skip-grant-tables
solo in mysql:

ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';