Easy parallelization mysql password

I am trying to run the tutorial on easy parallelization: https://optuna.readthedocs.io/en/stable/tutorial/10_key_features/004_distributed.html Mysql is installed via brew on my mac. To create the “example” database I run the command with -p parameter: mysql -u root -e "CREATE DATABASE IF NOT EXISTS example" -p And then when I run: optuna create-study --study-name "distributed-example" --storage "mysql://root@localhost/example" I get: (MySQLdb._exceptions.OperationalError) (1045, "Access denied for user 'root'@'localhost' (using password: NO)") (Background on this error at: http://sqlalche.me/e/14/e3q8)

Any idea how to overcome this with optuna CLI?

[toshihikoyanase]

Hi @gkourogiorgas I guess the DB URL requires the password. You can place password between username and hostname as follows: mysql://root:<password>@localhost/example Fore more details, please refer to the following document: https://docs.sqlalchemy.org/en/14/core/engines.html#database-urls

[nzw0301]

let me close this issue since the original question is supposed to be answered. Please feel free to reopen this issue if you have a still problem.