CentOS7在线安装Mysql5.6

1、新创建的服务器，需要检测系统是否自带安装mysql

# yum list installed | grep mysql
   
   
   
   

2、如果发现有系统自带mysql，请卸载

# yum -y remove mysql-libs.x86_64
   
   
   
   

3、下载mysql yum源

# wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm

   
   
   
   

4、配置MySQL的安装源

# rpm -ivh mysql-community-release-el6-5.noarch.rpm
   
   
   
   

5、安装mysql 服务器命令

# yum install mysql-community-server
   
   
   
   

6、安装成功后启动

# service mysqld start
   
   
   
   

7、由于mysql刚刚安装完的时候，mysql的root用户的密码默认是空的，所以我们需要及时用mysql的root用户登录（第一次回车键，不用输入密码），并修改密码

   
   
   
   

    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # mysql
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # show databases;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | Database           |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | information_schema |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | hive               |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | mysql              |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | performance_schema |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # use mysql;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # show tables;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +---------------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | Tables_in_mysql           |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +---------------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | columns_priv              |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | db                        |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | event                     |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | func                      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | general_log               |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | help_category             |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | help_keyword              |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | help_relation             |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | help_topic                |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | innodb_index_stats        |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | innodb_table_stats        |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | ndb_binlog_index          |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | plugin                    |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | proc                      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | procs_priv                |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | proxies_priv              |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | servers                   |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave_master_info         |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave_relay_log_info      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave_worker_info         |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slow_log                  |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | tables_priv               |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | time_zone                 |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | time_zone_leap_second     |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | time_zone_name            |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | time_zone_transition      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | time_zone_transition_type |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | user                      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +---------------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # select host,user from user;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | host      | user |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | 127.0.0.1 | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | ::1       | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | localhost |      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave1    |      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave1    | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

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

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # select host,user from user;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | host      | user |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | %         | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | 127.0.0.1 | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | ::1       | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | localhost |      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave1    |      |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | slave1    | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +-----------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # delete from user where host != '%';
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # select host,user from user;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | host | user |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | %    | root |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +------+------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # flush privileges; 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # quit ;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # service mysqld restart ;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # mysql -uroot -proot;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # show databases;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | Database           |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | information_schema |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | hive               |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | mysql              |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       | performance_schema |
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       +--------------------+
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       4 rows in set (0.00 sec)
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
   
   
   
   
   
   
   
   

8、查看mysql是否自启动,并且设置开启自启动命令

   
   
   
   

    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # chkconfig --list | grep mysqld
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       # chkconfig mysqld on
      
      
      
      
     
     
     
     
   
   
   
   
   
   
   
   

9、mysql安全设置

# mysql_secure_installation
   
   
   
   

Mysql5.7数据库初始密码查看及修改

自Mysql5.7初始密码不再默认为空！！！

1.查看初始密码：

   
   
   
   

    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       [
       
       
       
       root@master]# grep 
       
       
       
       'temporary password'  /
       
       
       
       var/log/mysqld.log 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       2017
       
       
       
       -03
       
       
       
       -12T12:
       
       
       
       25:
       
       
       
       43.090102Z 
       
       
       
       1 [Note] A temporary password 
       
       
       
       is generated 
       
       
       
       for 
       
       
       
       root@localhost: h8&%pgp/+BB2
      
      
      
      
     
     
     
     
   
   
   
   
   
   
   
   

2.登录及修改密码：

   
   
   
   

    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       [root@master]# mysql -uroot -p
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Enter password: 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Welcome 
       
       
       
       to the MySQL monitor.  Commands 
       
       
       
       end 
       
       
       
       with ; 
       
       
       
       or \g.
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Your MySQL connection id 
       
       
       
       is 
       
       
       
       3
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Server version: 
       
       
       
       5.7.
       
       
       
       17
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      
 
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Copyright (c) 
       
       
       
       2000, 
       
       
       
       2016, 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> show databases;
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       ERROR 
       
       
       
       1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
      
      
      
      
     
     
     
     
   
   
   
   
   
   
   
   

3.修改密码：

   
   
   
   

    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       mysql> 
       
       
       
       alter 
       
       
       
       user 
       
       
       
       root@
       
       
       
       localhost identified by 
       
       
       
       'Mysql123#';
      
      
      
      
     
     
     
     
    
    
    
    

     
     
     
     

      
      
      
      

     
     
     
     
     
     
     
     

      
      
      
      

       
       
       
       Query 
       
       
       
       OK, 0 
       
       
       
       rows 
       
       
       
       affected (0
       
       
       
       .00 
       
       
       
       sec)