1. 安装
sudo apt update sudo apt install mysql-server mysql-client
2. 查看密码
master@master:~$ sudo cat /etc/mysql/debian.cnf # Automatically generated for Debian scripts. DO NOT TOUCH! [client] host = localhost user = debian-sys-maint password = 7ZEfzL5zOzDIsPve socket = /var/run/mysqld/mysqld.sock [mysql_upgrade] host = localhost user = debian-sys-maint password = 7ZEfzL5zOzDIsPve socket = /var/run/mysqld/mysqld.sock
3. 登录数据库修改用户密码
master@master:~$ mysql -u debian-sys-maint -p7ZEfzL5zOzDIsPve mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 9 Server version: 5.7.36-0ubuntu0.18.04.1 (Ubuntu) Copyright (c) 2000, 2021, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> update mysql.user set authentication_string=password('123456') where user='root' and Host ='localhost'; Query OK, 1 row affected, 1 warning (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 1 mysql> update user set plugin="mysql_native_password"; Query OK, 1 row affected (0.00 sec) Rows matched: 4 Changed: 1 Warnings: 0 mysql> flush privileges; Query OK, 0 rows affected (0.01 sec) mysql> quit; Bye
4. 重新登录
master@master:~$ mysql -uroot -p123456 mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 10 Server version: 5.7.36-0ubuntu0.18.04.1 (Ubuntu) Copyright (c) 2000, 2021, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> exit Bye
5. mysql8.0修改密码方法
use mysql; alter user 'root'@'localhost' identified with mysql_native_password by '********'; flush privileges;
6. 进程管理
启动mysql： 方式一：sudo /etc/init.d/mysql start 方式二：sudo service mysql start
方式三：sudo systemctl start mysql.service
停止mysql： 方式一：sudo /etc/init.d/mysql stop 方式二：sudo service mysql stop
方式三：sudo systemctl stop mysql.service 重启mysql： 方式一：sudo/etc/init.d/mysql restart 方式二：sudo service mysql restart
方式三：sudo systemctl restart mysql.service