NFS出错了,Permission denied
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原贴:http://hi.baidu.com/farmerluo/blog/item/07aa5343d2da9f119313c6de.html
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NFS出错了,Permission denied
2006年09月30日 星期六 11:31
今天同事跟我说网站的图片不能显示了,后来检查的时候发现一个NFS的怪异现象。 在mount nfs目录时出现错误: mount -t nfs 192.168.1.172:/nfs/mp3/mp3files /web/mp3/mp3files mount: 192.168.1.172:/nfs/mp3/mp3files failed, reason given by server: Permission denied 我原来的/etc/exportfs是这样的: [root@ha1 nfs]# cat /etc/exports /nfs/mp3/mp3files 192.168.1.*(rw,async) 一直都用的好好的,其它的机器通过内网IP来mount这台上面的数据。 所以我想应该是我做了什么造成的,因为之前我看到/var/log/messages mountd[3082]: Fake hostname rs0.xxxxxxcom for 192.168.1.69 - forward lookup doesn't exist 以为nfs警告说我没有做域名反解,所以我就在我的域名服务器做把192.168.1.69做了一下反解。并增加了rs0.xxxxx.com这个域名到192.168.1.69。做完之后就没有再出现上面的错误了,但是上面说的出现不能mount的情况。 在网上查了一些资料,有人说把/etc/exports换成域名试试,所以我就改成了: [root@ha1 nfs]# cat /etc/exports /nfs/mp3/mp3files *.xxxxxx.com(rw,async) 再mount,发现正常,没有问题了。 后来又查了一些相关资料,才知道: nfs server接到客户端的mount时,会先客户的IP做反解成域名,用域名(注意是用域名而不是IP)去和/etc/exports做比较,如果匹配不成功会失败。 而我做了域名反解后,并没有更新/etc/exports内的IP为域名。所以匹配不到对应的域名,自然就出现mount: 192.168.1.172:/nfs/mp3/mp3files failed, reason given by server: Permission denied的错误了。 之前用IP没有问题是因为在域名不能反解的时候还是用IP去匹配的。 |
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apple_2005168 | banggou | joefiky | cnkit | rublis | 07104218 | unix_oracle | slong42 |
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