环境：centos6.5 x86_64
启动mysql发现日志报错(日志路径可以查看/etc/my.cnf的配置)
160722 10:34:08 [Note] Found 42570716 of 42570696 rows when repairing './yunva@002dlog/room_msg'
160810 0:54:00 [ERROR] /usr/libexec/mysqld: Sort aborted160810 10:41:55 [ERROR] /usr/libexec/mysqld: Sort aborted
160810 16:41:43 [ERROR] /usr/libexec/mysqld: Sort aborted
160823 11:34:45 mysqld_safe Starting mysqld daemon with databases from /home/data
160823 11:34:46 [Warning] Can't create test file /home/data/plugin.lower-test
160823 11:34:46 [Warning] Can't create test file /home/data/plugin.lower-test
160823 11:34:46 [Warning] option 'innodb-additional-mem-pool-size': signed value 200 adjusted to 524288
160823 11:34:46 InnoDB: Initializing buffer pool, size = 128.0M
160823 11:34:46 InnoDB: Completed initialization of buffer pool
160823 11:34:46 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.
160823 11:34:46 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
160823 11:45:30 mysqld_safe Starting mysqld daemon with databases from /home/data
160823 11:45:30 [Warning] Can't create test file /home/data/plugin.lower-test
160823 11:45:30 [Warning] Can't create test file /home/data/plugin.lower-test
160823 11:45:30 [Warning] option 'innodb-additional-mem-pool-size': signed value 200 adjusted to 524288
160823 11:45:30 InnoDB: Initializing buffer pool, size = 128.0M
160823 11:45:30 InnoDB: Completed initialization of buffer pool
160823 11:45:30 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.
发现系统启动只有几十分钟，说明服务器刚被人重启过，mysql服务无法启动
百度了下可能是selinux引起的，getenforce 发现问enforcing
setenforce 0
并且修改配置/etc/sysconfig/selinux
SELINUX=disabled
问题解决