mysql出现13错误以及SSH拒绝密钥

昨天突然发现博客无法访问,报500数据库错误,可是用SSH登录终端的时候发现无法连接SSH,用Console 等上去后发现SSHD服务没起来报   

Starting sshd:/var/empty/sshd must be owned by root and not group or world-writable

这个错误,查了一下,是权限问题,使用

chown  -R  root.root  /var/empty/sshd
chmod 744 /var/empty/sshd
service sshd restart

重启后启动SSHD服务。终端登上去后看了一下mysql状态也没起来…好吧,查看mysql的错误日志后发现这么一个错误:

/usr/local/mysql/bin/mysqld: File ‘./mysql-bin.~rec~’ not found (Errcode: 13)
160910 11:01:27 [ERROR] MYSQL_BIN_LOG::open_purge_index_file failed to open register file.
160910 11:01:27 [ERROR] MYSQL_BIN_LOG::open_index_file failed to sync the index file.
160910 11:01:27 [ERROR] Aborting

到数据库文件夹看了一下有很多www的所属.于是执行 chown -R mysql:mysql 数据库目录   重启mysql。成功启动。网站也进去了~

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