mysqld_safe mysqld from pid file ...pid ended已解决悬赏5积分

[root@iZ94jft07niZ zbox]# /opt/zbox/zbox -ap 7600 -mp 7611 start
Start Apache success

Start Mysql fail. You can see the log /opt/zbox/logs/mysql_error.log

[root@iZ94jft07niZ zbox]# cat  /opt/zbox/logs/mysql_error.log

161126 18:10:05 mysqld_safe mysqld from pid file /opt/zbox/tmp/mysql/mysqld.pid ended

不是端口问题，该如何排查？