mysql启动提示mysql.host 不存在，启动失败的解决方法

启动mysql时会报错:

Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn'

我安装的版本是:5.5.32

解决方法:

初始化数据库

#  scripts/mysql_install_db --user=mysql 

#  chown -R root /usr/local/mysql 

#  chown -R mysql /usr/local/mysql/var 

#  chgrp -R mysql /usr/local/mysql 

#  cp support-files/my-medium.cnf /etc/my.cnf 

#   /usr/local/mysql/bin/mysqld_safe --user=mysql &