Linux下MySQL起动报错The server quit without updating PID file

MySQL起动报错The server quit without updating PID file (/usr/local/mysql/data/

查看日志：

131206 23:10:21 mysqld_safe mysqld from pid file /usr/local/mysql/data/mysql.pid ended

vi /etc/my.cnf

在[mysqld]中添加：

datadir = /usr/local/mysql/data
log-error = /usr/local/mysql/data/error.log
pid-file = /usr/local/mysql/data/mysql.pid
user = mysql
tmpdir = /tmp

#保存退出
#初始化数据库

./mysql_install_db --user=mysql --basedir=/usr/local/mysql  \
--datadir=/usr/local/mysql/data  \
--pid-file=/usr/local/mysql/data/mysql.pid --tmpdir=/tmp

service mysqld restart