(转)Linux下给mysql创建用户分配权限
1.新建用户 //登录MYSQL @mysql -u root -p @密码 //创建用户 mysql insert into mysql.user(Host,User,Password) values('localhost’,'haha’,password('hahapwd')); //刷新系统权限表 mysqlflush privileges; 这样就创建了一个名为:haha 密码为
1.新建用户
//登录MYSQL
@>mysql -u root -p
@>密码
//创建用户
mysql> insert into mysql.user(Host,User,Password) values('localhost’,'haha’,password('hahapwd'));
//刷新系统权限表
mysql>flush privileges;
这样就创建了一个名为:haha 密码为:hahapwd 的用户。
//退出后登录一下
mysql>exit;
@>mysql -u haha -p
@>输入密码
mysql>登录成功
2.为用户授权
//登录MYSQL(有ROOT权限)。我里我以ROOT身份登录。
@>mysql -u root -p
@>密码
//首先为用户创建一个数据库(hahaDB)
mysql>create database hahaDB;
//授权haha用户拥有haha数据库的所有权限
@>grant all privileges on hahaDB.* to haha@localhost identified by ‘hahapwd’;
//刷新系统权限表
mysql>flush privileges;
mysql>其它操作
//如果想指定部分权限给一用户,可以这样来写:
mysql>grant select,update on hahaDB.* to haha@localhost identified by ‘hahapwd’;
//刷新系统权限表。
mysql>flush privileges;
mysql> grant 权限1,权限2,…权限n on 数据库名称。表名称 to 用户名@用户地址 identified by ‘连接口令';
权限1,权限2,…权限n代表select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file等14个权限。
当权限1,权限2,…权限n被all privileges或者all代替,表示赋予用户全部权限。
当数据库名称。表名称被*.*代替,表示赋予用户操作服务器上所有数据库所有表的权限。
用户地址可以是localhost,也可以是ip地址、机器名字、域名。也可以用’%’表示从任何地址连接。
‘连接口令’不能为空,否则创建失败。
例如:
mysql>grant select,insert,update,delete,create,drop on vtdc.employee to haha@10.163.225.87 identified by ‘123′;
给来自10.163.225.87的用户haha分配可对数据库vtdc的employee表进行select,insert,update,delete,create,drop等操作的权限,并设定口令为123。
mysql>grant all privileges on vtdc.* to haha@10.10.10.87 identified by ‘123′;
给来自10.163.225.87的用户haha分配可对数据库vtdc所有表进行所有操作的权限,并设定口令为123。
mysql>grant all privileges on *.* to haha@10.10.10.87 identified by ‘123′;
给来自10.163.225.87的用户haha分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。
mysql>grant all privileges on *.* to haha@localhost identified by ‘123′;
给本机用户haha分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。
3.删除用户
@>mysql -u root -p
@>密码
mysql>DELETE FROM user WHERE User=”haha” and Host=”localhost”;
mysql>flush privileges;
//删除用户的数据库
mysql>drop database hahaDB;
4.修改指定用户密码
@>mysql -u root -p
@>密码
mysql>update mysql.user set password=password('新密码') where User=”haha” and Host=”localhost”;
mysql>flush privileges;
mysql>quit;
PS:如果要开启远程连接:
1.新创建一个Host 为'%'的用户
mysql>insert into mysql.user(Host,User,Password) values('%','haha’,password('hahapwd’));
2.为用户授权
mysql>grant all privileges on hahaDB.* to haha@'%' identified by ‘hahapwd’
mysql>flush privileges;

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