業務開發部署需要共享一個目錄，採用nfs方式，整理了一下操作方法，共享出來，需要了解nfs的網上搜索下。

一、規劃：
業務
10.111.32.50
10.111.32.51

NFS server
10.111.32.52


二、操作
a)Nfs server 10.111.32.52
mkdir /share1
chmod o+w /share1
vim /etc/exports
/share1    10.111.32.50(sync,rw,no_root_squash) *(sync,rw)
service nfs start
chkconfig nfs on


b)client 10.111.32.50
mkdir /sharedisk
[[email protected] /]# showmount -e 10.111.32.52
Export list for 10.111.32.52:
/share1 (everyone)


mount 10.111.32.52:/share1 /sharedisk

開機啟動
10.111.32.52:/share1 /sharedisk nfs    defaults 0 0

c)client 10.111.32.51
mkdir /sharedisk
[

[email protected] /]# showmount -e 10.111.32.52
Export list for 10.111.32.52:
/share1 (everyone)

mount 10.111.32.52:/share1 /sharedisk

開機啟動
vi /etc/fstab
10.111.32.52:/share1 /sharedisk nfs    defaults 0 0

vi /etc/rc.local
/bin/mount -t nfs -o rw 10.111.32.52:/share1 /sharedisk


檢查是不是有掛載NFS
nfsstat -m




三、問題
問題1：解除安裝的時候報錯
umount.nfs: /media/nfs_share: device is busy
解決方法：
fuser -km /sharedisk 強制umount
如果上邊的不好用使用 umount -f /sharedisk

問題2：
[[email protected] data2]# service nfs restart
Shutting down NFS daemon:                                  [FAILED]
Shutting down NFS mountd:                                  [FAILED]
Shutting down NFS quotas:                                  [FAILED]
Shutting down NFS services:                                [  OK  ]
Starting NFS services:                                     [  OK  ]
Starting NFS quotas: Cannot register service: RPC: Unable to receive; errno = Connection refused
rpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).
                                                           [FAILED]
Starting NFS mountd:                                       [FAILED]
Stopping RPC idmapd:                                       [  OK  ]
Starting RPC idmapd:                                       [  OK  ]
Starting NFS daemon: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)
rpc.nfsd: unable to set any sockets for nfsd
                                                           [FAILED]

解決方法：啟動rpcbind&rpcidmap rpcbind是6.0版本後預設的RPC服務，所以要先於nfs啟動。如果不啟動rpcidmap則會造成使用者許可權的對映錯誤，使用者的許可權看起來是一串數字。

# /etc/init.d/rpcbind start
Starting rpcbind: [ OK ]
# /etc/init.d/rpcidmapd start
Starting RPC idmapd: [ OK ]
# /etc/init.d/nfs start
Starting NFS services: [ OK ]
Starting NFS quotas: [ OK ]
Starting NFS mountd: [ OK ]
Starting NFS daemon: [ OK ]


問題3：
伺服器沒有showmount命令
yum install showmount



問題4：
普通使用者沒有刪除許可權。
rm: remove write-protected regular empty file monitor

錯誤的許可權：
-rwxrwxrwx 3 nobody nobody 4096 Mar 11 14:26 monitor
發現檔案都是nobody

正確的許可權：
-rwxrwxrwx 3 www www 4096 Mar 11 14:26 monitor

解決方法:
[

[email protected] etc]# vi /etc/idmapd.conf
[Mapping]
Nobody-User = www
Nobody-Group = www

[[email protected] etc]# service rpcidmapd restart
正在啟動 RPC idmapd：[確定]
正在啟動 RPC idmapd：[確定]

可以在多個客戶端設定不同的使用者名稱，檢視的時候檔案顯示不同屬主屬組。

參考：
http://blog.csdn.net/lhfeng/article/details/7297963
http://blog.sina.com.cn/s/blog_5ca0198e0101j68n.html