无法登录mysql运行

sudo systemctl status mysql

sudo systemctl start mysql

sudo ufw status
sudo ufw allow 3306

sudo systemctl stop mysql
sudo mysqld_safe --skip-grant-tables &
mysql -u root

UPDATE mysql.user SET Password=PASSWORD('new_password') WHERE User='root';
FLUSH PRIVILEGES;
EXIT;

SELECT User, Host FROM mysql.user;
GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;

ping <mysql_server_ip>
telnet <mysql_server_ip> 3306

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="your_username",
        password="your_password",
        database="your_database"
    )
    print("Connected to MySQL successfully!")
except mysql.connector.Error as err:
    print(f"Error: '{err}'")
finally:
    if conn.is_connected():
        conn.close()