150112 15:21:28 mysqld_safe Starting mysqld daemon with databases from /data/mysql 150112 15:21:28 [Warning] Can't create test file /data/mysql/localhost.lower-test 150112 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 = 8.0M 150112 15:21:28 InnoDB: Completed initialization of buffer pool 150112 15:21:28 InnoDB: Operating system error number 13 in a file operation. InnoDB: The error means mysqld does not have the access rights to InnoDB: the directory. InnoDB: File name ./ibdata1 InnoDB: 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