redhat5下安装MySQL-5.6，默认密码无法进入的解决办法

    redhat5下安装MySQL-5.6，默认装完没有设置mysql的密码，按理说应该mysql的root用户的默认密码为空，但是默认空密码无法进入，报错信息如下：

  Access denied for user 'root'@'localhost' (using password: NO)

各种密码尝试都无法进入mysql。经网上查找资料终于找到解决办法。

解决办法：
找到my.cnf文件，编辑文件，添加如下内容：
  skip-grant-tables
     skip-networking
红色字体为新添加。

[root@localhost /]# vi /usr/my.cnf 

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

[mysqld]
[color=red] 
  skip-grant-tables
  skip-networking
[/color]


# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M

# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin

# These are commonly set, remove the # and set as required.
# basedir = .....

重新启动：/etc/init.d/mysql restart
启动OK后，mysql的root用户默认空密码可以正常进入。