Fedora 17 x64如何配置nfs服务

测试环境:

[root@tp system]# uname -a
Linux tp 3.3.4-5.fc17.x86_64 #1 SMP Mon May 7 17:29:34 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

配置nfs exports:

vim /etc/exports

/run/media/k/Elements/unzip/ora11gR2forLinux64  192.168.221.0/24(rw,sync,no_root_squash)

激活exports,可直接用exportfs刷新或者重启服务:

1. exportfs刷新:

[root@tp system]# exportfs -avf
exporting 192.168.221.0/24:/run/media/k/Elements/unzip/ora11gR2forLinux64
2. 重启服务:
[root@tp system]# systemctl restart nfs-server.service

查看本机共享出的nfs文件夹:

[root@tp system]# showmount -e
Export list for tp:
/run/media/k/Elements/unzip/ora11gR2forLinux64 192.168.221.0/24

换台机器挂载nfs文件夹:

[root@rac1 ~]# mount -t nfs 192.168.221.1:/run/media/k/Elements/unzip/ora11gR2forLinux64 /mnt
[root@rac1 ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      188G  2.7G  176G   2% /
/dev/sda1              99M   23M   71M  25% /boot
tmpfs                 2.0G     0  2.0G   0% /dev/shm
/dev/sr0              3.6G  3.6G     0 100% /media
192.168.221.1:/run/media/k/Elements/unzip/ora11gR2forLinux64
                      932G  806G  127G  87% /mnt
[root@rac1 ~]#

注意问题:

1. 检查配置没有问题后,仍无法发现nfs共享,可以先临时关闭防火墙(systemctl stop iptables.service)和SELINUX(setenforce 0),再试试看。

2. 客户机上能发现nfs共享,并且可以成功mount,但是没有权限列出mount后的目录,需要加no_root_squash到nfs exports选项里,这样客户机能以root权限来查看nfs共享文件夹。

man exports

       root_squash
              Map requests from uid/gid 0 to the anonymous uid/gid. Note  that
              this  does  not  apply  to  any other uids or gids that might be
              equally sensitive, such as user bin or group staff.

       no_root_squash
              Turn off root squashing. This option is mainly useful for  disk‐
              less clients.

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