mysql新增专给特定IP访问的用户

1 新创建同时授权用户：

 [root@XX-90 ~]# mysql -root -p
 Enter password:
 Welcome to the MySQL monitor.  Commands end with ; or \g.
 Your MySQL connection id is 5386
 Server version: 5.5.15-log MySQL Community Server (GPL)

 Copyright (c) 2000, 2010, 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> grant select,insert,update,delete on my_test_db.* to biao@localhost Identified by "123456";

上面的my_test_db是要授权访问到的数据库实例，biao是新用户名，123456是密码，localhost应该是数据库允许被访问的ip

 

2 创建用户后，可以在mysql数据库的user表看到新创建的用户信息：

 mysql> show database;
 ERROR 2006 (HY000): MySQL server has gone away
 No connection. Trying to reconnect...
 Connection id:    15
 Current database: karaoke

 ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
 mysql> show databases;
 +--------------------+
 | Database           |
 +--------------------+
 | information_schema |
 | mysql              |
 | performance_schema |
 | test               |
 +--------------------+
 6 rows in set (0.00 sec)

 mysql> use mysql
 Database changed
 mysql> show tables;
 +---------------------------+
 | Tables_in_mysql           |
 +---------------------------+
 | columns_priv              |
 | db                        |
 | event                     |
 | func                      |
 | general_log               |
 | help_category             |
 | help_keyword              |
 | help_relation             |
 | help_topic                |
 | host                      |
 | ndb_binlog_index          |
 | plugin                    |
 | proc                      |
 | procs_priv                |
 | proxies_priv              |
 | servers                   |
 | slow_log                  |
 | tables_priv               |
 | time_zone                 |
 | time_zone_leap_second     |
 | time_zone_name            |
 | time_zone_transition      |
 | time_zone_transition_type |
 | user                      |
 +---------------------------+
 24 rows in set (0.00 sec)

 mysql> select * from user where user='karaoke' \G
 *************************** 1. row ***************************
                  Host: localhost
                  User: biao
              Password: *E7E5651E6FD1A0960EC95E6DE3D971537515F66E
           Select_priv: Y
           Insert_priv: Y
           Update_priv: Y
           Delete_priv: Y
           Create_priv: N
             Drop_priv: N
           Reload_priv: N
         Shutdown_priv: N
          Process_priv: N
             File_priv: N
            Grant_priv: N
       References_priv: N
            Index_priv: N
            Alter_priv: N
          Show_db_priv: N
            Super_priv: N
 Create_tmp_table_priv: N
      Lock_tables_priv: N
          Execute_priv: N
       Repl_slave_priv: N
      Repl_client_priv: N
      Create_view_priv: N
        Show_view_priv: N
   Create_routine_priv: N
    Alter_routine_priv: N
      Create_user_priv: N
              ssl_type:
            ssl_cipher:
           x509_issuer:
          x509_subject:
         max_questions: 0
           max_updates: 0
       max_connections: 0
  max_user_connections: 0
 1 row in set (0.00 sec)

 

如果你的结果不面上面user='biao'那样，你可以自己update这个表这段信息，如我想让这个用户只给10.11.11.11的IP访问，就update user set Host='10.11.11.11' where User='biao';

 

3 新增用户授权后无法使用，如ip为10.11.11.11无法使用，这里不用急，我是通过重启数据库来让它生效的：

 

 #创建用户后,外面机如如还没法登陆,可以重启数据库服务:
 [root@TJHY95-90 ~]# sodu service mysql restart;
 -bash: sodu: command not found
 [root@TJHY95-90 ~]# sudo service mysql restart;
 Shutting down MySQL.....                                   [确定]
 Starting MySQL....                                         [确定]
 [root@TJHY95-90 ~]# mysql -uroot -p

 

这样外面就可以访问了，如这里我指定了10.11.11.11这台机来访问，那么在这台机上使用如下访问语句:

 [root@xx11-11 ~]# hostname -i
 10.11.11.11
 [root@xx11-11 ~]# mysql -ukaraoke -pkaraoke  -h10.11.11.142
 Welcome to the MySQL monitor.  Commands end with ; or \g.
 Your MySQL connection id is 17
 Server version: 5.5.15-log MySQL Community Server (GPL)

 Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

 mysql>

 这里的10.11.11.142是我们刚才数据库所在的IP。

 

 

更多参考：

mysql设置允许外部访问

配置外部访问帐号密码

本地登录mysql

 

 mysql -uroot -p

 

执行

 

 grant all on *.* to rails@'client_ip' identified by 'password' with grant option;

 

例子：所有局域网客户端都可访问

 

 grant all on *.* to root@'192.168.0.%' identified by 'root' with grant option;

 

例子：为boyu数据库设置用户boyu

 

 grant all on boyu.* to boyu@'192.168.0.%' identified by 'p4ssword';

 app_server_id为APP应用服务器的IP

 

设置mysql外部能访问

/etc/mysql/my.cnf

注释到下面这行

 

 bind-address = 127.0.0.1

 

重启mysql-server

 

 sudo service mysql restart

 

 

 

 

及参考：

yum安装Mysql

 

如果在源代码编译未安装成功的情况，用yum安装是比较好的选择，特别是对新手来说，是很好的选择，安装的过程很简单，只要输入：yum -y install mysql-server ，系统自动下载和安装Mysql的， 
chkconfig --add mysqld 在服务清单中添加mysql服务 
service mysqld start 服务启动 
mysqladmin -u root password 'newpassword' 更改密码 
mysql -u root -p 
mysql> DROP DATABASE test; 删除test数据库 
mysql> DELETE FROM mysql.user WHERE user = ''; 删除匿名帐户 
mysql> FLUSH PRIVILEGES; 重载权限