一.mysql 啓動方法
1./etc/init.d/mysqld start
2./usr/local/mysql/bin/mysqld_safe --user=mysql &
&:代表後臺啓動mysql服務
二.mysql 登陸方法:
1.剛裝完系統沒密碼情況:mysql 或者mysql -uroot
2.標準的登陸方法:mysql -uroot -p
3.多實例登陸方法:
mysql -uroot -p -S /data/3306/mysql.sock #指定下sock文件
mysql -uroot -p -S /data/3307/mysql.sock
三.mysql關閉方法
1.用專門的腳本關閉
四.mysql建用戶.並授權方法
1.分2步的方法:
create user 'test'@'localhost' identified by 'test11';
grant select on mysql.* to 'test'@'localhost' ;
2.直接一條命令:
mysql> grant select on mysql.* to 'test2'@'localhost' identified by 'test22';
Query OK, 0 rows affected (0.00 sec)
mysql> select user,host from user;
+-----------+-----------+
| user | host |
+-----------+-----------+
| root | 127.0.0.1 |
| root | localhost |
| test | localhost |
| test2 | localhost |
| wordpress | localhost |
+-----------+-----------+
5 rows in set (0.00 sec)
五.mysql修改密碼方法:
1.安裝完後,設置密碼方法:
a.mysqladmin -uroot password 'test88'
b.[root@ser200 3306]# mysqladmin -uroot password 'mybaby3306' -S /data/3306/mysql.sock
#多實例的例子
2.修改密碼
a. [root@ser200~]# mysqladmin -uroot -p'mybaby99' password 'ainini99'
b. [root@ser200~]# mysqladmin -uroot -p'mybaby99' password 'ainini99' -S /data/3306/mysql.sock
六.找回丟失密碼:
1.單實例
[root@ser200 ~]# killall mysqld
[root@ser200 ~]# mysqld_safe --skip-grant-table & mysql -uroot -p
mysql> use mysql;
Database changed
mysql> update user set password=password('mygirl99') where user='root';
Query OK, 2 rows affected (0.00 sec)
Rows matched: 2 Changed: 2 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
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