DNS小错误纠正！

今早发现一台备份的DNS Server无法更新主DNS上的记录，时间有些长了。
经过查证，发现问题是该机的/var/named目录属主为root用户，是系统升级时从备份恢复DNS时搞错的，但是不知道为什么只出现了这么一台，需要进一步查证，更改回named：named属主后，更新正常。
DNS服务主目录一定要时named:named属主的。

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