150112 15:21:28 mysqld_safe Starting mysqld daemon with databases from /data/mysql150112 15:21:28 [Warning] Can't create test file /data/mysql/localhost.lower-test150112 15:21:28 [Warning] Can't create test file /data/mysql/localhost.lower-test^G/usr/libexec/mysqld: Can't find file: './mysql/plugin.frm' (errno: 13)150112 15:21:28 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.150112 15:21:28  InnoDB: Initializing buffer pool, size = 8.0M150112 15:21:28  InnoDB: Completed initialization of buffer pool150112 15:21:28  InnoDB: Operating system error number 13 in a file operation.InnoDB: The error means mysqld does not have the access rights toInnoDB: the directory.InnoDB: File name ./ibdata1InnoDB: File operation call: 'open'.InnoDB: Cannot continue operation.150112 15:21:28 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

貌似是SELinux的问题，做了以下两步可以了

1. 修改配置文件修改配置文件/etc/selinux/config（未验证不修改是否可以）

　　修改SELINUX=enforcing为SELINUX=permissive

2. chcon -R -t mysqld_db_t /data/mysql