mysql數(shù)據(jù)庫---用戶及密碼管理

創(chuàng)建用戶及密碼
mysql> create user 'zhao'@'loacl' identified by '123123';
mysql> use mysql;

創(chuàng)建密文密碼
mysql> select password('123123');  #查看明文對應(yīng)的密文

mysql> create user 'test01'@'localhost' identified by   #創(chuàng)建密文密碼 'E56A114692FE0DE073F9A1DD68A00EEB9703F3F1';

刪除用戶
mysql> drop user 'test01'@'localhost';

修改已存在用戶的密碼
set password =pssword('123123');
修改其他用戶密碼
set password for 'user02'@'localhost' = password('123abc');

重命名用戶
mysql> rename user 'zz'@'host' to 'user01'@'host';

用戶授權(quán)
mysql> grant select,update on *.* to 'user01'@'localhost' identified by '123123'; #給用戶user01添加對所有庫和表擁有select,update權(quán)限

取消用戶授權(quán)
mysql> revoke update on *.* from 'user01'@'localhost'; #對user01用戶取消update權(quán)限

用戶忘記密碼
1.修改配置文件
systamctl stop mysqld.service       #關(guān)掉數(shù)據(jù)庫
vim /etc/my.cnf
 skip-grant-tables               #在mysqld這段最下面插入(跳過驗證)
systamctl start mysqld.service      #開啟數(shù)據(jù)庫

2.直接進入數(shù)據(jù)庫修改密碼
mysql         #直接進入數(shù)據(jù)庫
mysql> update mysql.user set authentication_string =passwordd('123123');
mysql> quit

3.測試登錄數(shù)據(jù)庫
[root@localhost data]# mysql -uroot -p123123
......   省略部分內(nèi)容
mysql>   #成功進入mysql數(shù)據(jù)庫