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<p><FONT class=normalfont><B><font color=blue>Linux下NFS网络文件系统设定及管理</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者:Juili Chiu (http://www.linuxcenter.com.tw/)<br>来自:Linux知识宝库<br>联系方式:无名<br><br>简介:<br>
<br>
NFS 最初是由 Sun Microsytem 公司於 1984 年所开发出来的,最主要的功能就是让网路上的 UNIX 电脑可以共享目录及档案。我们可以将远端所分享出来的档案系统,挂载 (mount) 在本地端的系统上,然後就可以很方便的使用远端的档案,而操作起来就像在本地操作一样,不会感到有甚麽不同。而使用 NFS 也有相当多的好处,例如档案可以集中管理,节省磁碟空间......等等。<br>
<br>
安装 NFS:<br>
<br>
大部份的 Linux Distribution 安装时都会将 NFS 安装上去,在 OpenLinux 上,NFS 由两个 RPM 套件所组成,分别为 nfs 及 nfs-server,nfs 主要包括一些 client 端所需要的程式,而 nfs-server 主要是 NFS Server 的一些 daemon 程式。<br>
<br>
设定 NFS:<br>
<br>
设定档:/etc/exports<br>
设定档格式:档案系统 [主机][选项]<br>
例:<br>
<br>
/ charlie(ro) john(rw,no_root_squash)<br>
/tmp pc*.col.com.tw(rw) 172.29.0.0/255.255.0.0(ro)<br>
/pub (ro)<br>
/pub/private (noaccess)<br>
<br>
选项说明:<br>
<br>
ro read only<br>
rw read write<br>
no_root_squash 信任客户端,对应 UID<br>
noaccess 客户端不能使用<br>
<br>
启动及结束 NFS 的服务:<br>
<br>
设定档更改後,一定要记得重新启动 NFS 的服务,启动及停止的方式如下:<br>
<br>
# /etc/rc.d/init.d/nfs [ start | stop | restart | reload ]<br>
<br>
start 启动 NFS 服务<br>
stop 停止 NFS 服务<br>
restart 停止并重新启动 NFS 服务<br>
reload 重新载入 NFS 设定值<br>
<br>
客户端使用 NFS:<br>
<br>
1.查看 NFS 的服务:<br>
<br>
client 要查看 Server 有提供哪些 NFS 服务,可以使用 showmount 这个指令。<br>
<br>
# showmount -e 可看有分享哪些目录<br>
# showmount -a 可看出所有的 mount<br>
<br>
2.连接 NFS Server:<br>
<br>
要使用 NFS server 上的资源,使用 mount 指令就可以了。<br>
# mount -t nfs hostname:/shared_dir<br>
<br>
例:<br>
# mount -t nfs 192.168.1.100:/tmp /mnt/nfs<br>
<br>
3.开机时自动连上 NFS:<br>
<br>
如果希望开机的时候,系统就自动挂载 NSF,则需要编辑 /etc/fstab 档。<br>
例:<br>
192.168.1.100:/tmp /mnt/nfs nfs defaults 0 0
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