登录mysql默认没有指定账号
查看默认账号是谁
select user();
mysql> select user(); +----------------+ | user() | +----------------+ | ODBC@localhost | +----------------+ 1 row in set (0.03 sec)
默认账号是 ODBC
切换mysql账号
-u 指定mysql账号
-p 指定mysql密码
mysql -uroot -p
mysql -uroot -p -h127.0.0.1 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 236589218 Server version: 5.6.20-log Source distribution Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. 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>
mysql> select user(); +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.00 sec)
登录设置密码
初始状态下，管理员root，密码为空，默认只允许从本机登录localhost
设置初始密码
mysqladmin -uroot password "123" 设置初始密码 由于原密码为空，因此-p可以不用
也可以设置-p
mysqladmin -uroot -p password "123"
[root@mysql ~]# mysql -uroot -p Enter password: ERROR 1045 (28000): Access denied for user \'root\'@\'localhost\' (using password: NO) [root@mysql ~]# mysql -uroot -p123 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 6 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. 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>
修改mysql密码
mysqladmin -uroot -p"123" password "456" 修改mysql密码,因为已经有密码了，所以必须输入原密码才能设置新密码