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MYSQL启动失败，提示Can’t find file: ‘./mysql/host.frm’解决办法
虚拟机默认启动Mysql,发现没有启动得了，于是，看了下Mysql的启动日志，如下：
110315 10:17:51  InnoDB: Started; log sequence number 0 43655
110315 10:17:51 [ERROR] /usr/libexec/mysqld: Can't find file: './mysql/host.frm' (errno: 13)
110315 10:17:51 [ERROR] /usr/libexec/mysqld: Can't find file: './mysql/host.frm' (errno: 13)
110315 10:17:51 [ERROR] Fatal error: Can't open and lock privilege tables: Can't find file: './mysql/host.frm' (errno: 13)
110315 10:17:51  mysqld ended

解决办法：

这主要是没有权限读取，给个权限就OK了
1： 初始化数据库做了没有？
/usr/local/mysql/bin/mysqld_install_db –user=mysql
2：权限问题
chown -R root.mysql /usr/local/mysql/
chown -R mysql /usr/local.mysql/var/

调整lib库路径：

echo "/usr/local/mysql/lib/mysql" >> /etc/ld.so.conf

重新加载配置

ldconfig

启动mysql

/usr/local/mysql/bin/mysql_safe --user=mysql &

查看是否启动了

netstat -ntpl | grep 3306

转自 https://blog.51cto.com/06071124/609995