Fedora 17配置NFS (未完成版)

http://www.server-world.info/en/note?os=Fedora_17&p=nfs



安装nfs及相关依赖：sudo yum install nfs-utils* -y
根据需要编辑配置文件：sudo gedit /etc/exports，如果共享目录是/opt/nfs，且希望挂载后对其可读可写，则在里面添加一行：/opt/nfs  *(sync,rw)，*表示所有IP，如果指定要IP访问，则可以直接替换为指定IP；若希望/opt/nfs只能读不能写则将rw改为ro即可，详细参数，查看手册。
开启nfs相关服务：sudo systemctl enable nfs-server.service
nfs-server检查是否开启：systemctl is-enabled nfs-server.service，会显示enabled
其它机器远程加载时只需：mount x.x.x.x:/opt/nfs /mnt，x.x.x.x是nfs服务的ip地址。

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编辑nfs配置文件：

vim /etc/exports

/path/to/your/directory  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：

# exportfs -avf
exporting 192.168.221.0/24:/path/to/your/directory
2. 重启服务：
# systemctl restart nfs-server.service

查看本机共享出的nfs文件夹：

# showmount -e
Export list for tp:
/path/to/your/directory

换台机器挂载nfs文件夹：

# mount -t nfs 192.168.221.1:/path/to/your/directory   /mnt
# 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:/path/to/your/directory  932G  806G  127G  87% /mnt

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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Configure NFS Server to share any directories on your Network.

[1]It's the Configuration on the system you want to build NFS server.

[root@master ~]#

yum -y install nfs-utils

[root@master ~]#

vi /etc/idmapd.conf

# line 5: uncomment and change to your domain name

Domain =

server.world

[root@master ~]#

vi /etc/exports

# write like below *note

/home 10.0.0.0/24(rw,sync,no_root_squash,no_all_squash)

# *note
/home

⇒ shared directory

10.0.0.0/24

⇒ range of networks NFS permits accesses

rw

⇒ writable

sync

⇒ synchronize

no_root_squash

⇒ enable root privilege

no_all_squash

⇒ enable users' authority

[root@master ~]#

systemctl start rpcbind.service

[root@master ~]#

systemctl start nfs-server.service

[root@master ~]#

systemctl start nfs-lock.service

[root@master ~]#

systemctl start nfs-idmap.service

[root@master ~]#

systemctl enable rpcbind.service

[root@master ~]#

systemctl enable nfs-server.service

[root@master ~]#

systemctl enable nfs-lock.service

[root@master ~]#

systemctl enable nfs-idmap.service

[2]Configuration on NFS clients

[root@www ~]#

yum -y install nfs-utils

[root@master ~]#

vi /etc/idmapd.conf

# line 5: uncomment and change to your domain name

Domain =

server.world

[root@www ~]#

systemctl start rpcbind.service

[root@www ~]#

systemctl start nfs-lock.service

[root@www ~]#

systemctl start nfs-idmap.service

[root@www ~]#

systemctl start nfs-mountd.service

[root@www ~]#

systemctl enable rpcbind.service

[root@www ~]#

systemctl enable nfs-lock.service

[root@www ~]#

systemctl enable nfs-idmap.service

[root@www ~]#

systemctl enable nfs-mountd.service

[root@www ~]#

mount -t nfs master.server.world:/home /home

[root@www ~]#

df -h

Filesystem                    Size  Used Avail Use% Mounted onrootfs                         16G  832M   14G   6% /devtmpfs                      995M     0  995M   0% /devtmpfs                        1003M     0 1003M   0% /dev/shmtmpfs                        1003M   39M  964M   4% /run/dev/mapper/VolGroup-lv_root   16G  832M   14G   6% /tmpfs                        1003M   39M  964M   4% /runtmpfs                        1003M     0 1003M   0% /sys/fs/cgrouptmpfs                        1003M     0 1003M   0% /media/dev/vda2                     485M   32M  428M   7% /bootmaster.server.world:/home/     16G  848M   14G   6% /home

# home directory on NFS is mounted

[root@www ~]#

vi /etc/fstab

/dev/mapper/VolGroup-lv_root /                       ext4    defaults  1 1UUID=65ec32e2-f459-4d63-b8b0-e18124b50f3a /boot      ext4    defaults  1 2/dev/mapper/VolGroup-lv_swap swap                    swap    defaults  0 0

# add at the lat line: change home directory this server mounts to the one on NFS

master.server.world:/home /home                      nfs     defaults  0 0