The server quit without updating PID file

mysql起动报错The server quit without updating PID file (/usr/local/mysql/data/
查看错误日志显示：
131206 23:10:21 mysqld_safe mysqld from pid file /usr/local/mysql/data/mysql.pid ended

重新配置vi /etc/my.cnf 加入
#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

[root@localhost scripts]# service mysqld restart
Shutting down MySQL. [确定]
Starting MySQL..