MySQL under linux restart switch state. Mysql remote connectivity

• Login : either linux or windows need to reach under the bin file mysql installation directory folder. Targeting Thereafter, the command interpreter mysql -uroot -p:. -U is meant username, user name is the value of the root, -p without a password, the next input. Do not show.
• Under linux open, close and restart
  • ON:
    • Start using the service: service mysql start
    • Use mysqld script to start: /etc/inint.d/mysql start
    • Use safe_mysqld start: safe_mysql &
  • shut down:
    • Use the service shut down: service mysql stop
    • Use mysqld script to start: /etc/inint.d/mysql stop
    • mysqladmin shutdown
  • Restart:
    • Use the service to restart: service mysql restart
    • Use mysqld script to start: /etc/inint.d/mysql restart
  • status:
    • Mysql using the service to view the status of the service is closed or open: service mysqld status
• Remote connections MySQL :
  • The reason: linux when no visual interface, the operation of the database is more trouble. So, start remote connectivity tools is a good choice.
  • Version: mysql8 different from previous versions of password encryption.
    • Error: navicat connection mysql appeared Client does not support authentication protocol requested by server
    • solve:
      • method one:
        • Into the mysql database
        • UPDATE mysql.user SET Password = OLD_PASSWORD('newpwd'）
          • ERROR 1130: Host '192.168.1.3' is not allowed to connect to this MySQL ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'
          • 错误处理：ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_password';
          • Executing a complete: ERROR 1062 (23000): Duplicate entry '% -root' for key 'PRIMARY' need to deal with the error
        • FLUSH PRIVILEGES; refresh
      • Second way: feeling too much trouble, directly modify a fine.
• These specific operating table, I do not want to remember.