目录
yum install -y nfs-utils
过程 15.1. On the *SERVER* side
stop & disable services
service nfs stop service nfslock stop service rpcbind stop service rpcidmapd stop
/etc/fstab
as root edit /etc/fstab and add nfs4 exports /www /exports none bind 0 0
as root edit /etc/exports
NFSv3
/exports 172.16.1.0/24 (rw,sync)
NFSv4
/exports 172.16.1.0/24(rw,sync,fsid=0,anonuid=99,anongid=99) /exports/neo *(rs,sync)
reload exported filesystems
# exportfs -rv
start required services
chkconfig rpcbind on chkconfig nfs on chkconfig nfslock on chkconfig rpcidmapd on service rpcbind start service rpcidmapd start service nfs start service nfslock start
nfs status
# nfsstat Server rpc stats: calls badcalls badauth badclnt xdrcall 171 0 0 0 0 Server nfs v3: null getattr setattr lookup access readlink 3 1% 150 88% 0 0% 3 1% 2 1% 0 0% read write create mkdir symlink mknod 0 0% 0 0% 0 0% 0 0% 0 0% 0 0% remove rmdir rename link readdir readdirplus 0 0% 0 0% 0 0% 0 0% 0 0% 9 5% fsstat fsinfo pathconf commit 0 0% 3 1% 0 0% 0 0%
# watch nfsstat -c Every 2.0s: nfsstat -c Mon Sep 20 16:53:55 2010 Client rpc stats: calls retrans authrefrsh 286818929 1160 0 Client nfs v4: null read write commit open open_conf 0 0% 37286763 13% 6 0% 1 0% 38990106 13% 17986485 6% open_noat open_dgrd close setattr fsinfo renew 6 0% 0 0% 38774539 13% 2172019 0% 16 0% 147 0% setclntid confirm lock lockt locku access 321 0% 321 0% 0 0% 0 0% 0 0% 62157123 21% getattr lookup lookup_root remove rename link 80553542 28% 8828991 3% 8 0% 5 0% 5 0% 0 0% symlink create pathconf statfs readlink readdir 0 0% 1 0% 0 0% 5 0% 0 0% 13933 0% server_caps delegreturn 24 0% 54556 0%
security
# vi /etc/hosts.deny rpcbind:ALL # vi /etc/hosts.allow rpcbind:172.16.1.0/255.255.254.0
NFS的队列大小下面将设置为较合理的值256K
# echo 262144 > /proc/sys/net/core/rmem_default # echo 262144 > /proc/sys/net/core/rmem_max # echo 262144 > /proc/sys/net/core/wmmen_default # echo 262144 > /proc/sys/net/core/wmmen_max
过程 15.2. NFSv4
/etc/exports
# cat /etc/exports /www 172.16.1.2/32(ro,sync,fsid=0,anonuid=99,anongid=99) /www/logs *(rw,sync)
注意，要通过NFS4共享一个目录,必须使用 fsid=0 的参数,使用fsid=0选项的时候只能共享一个目录，这个目录将成为NFS服务器的根目录。
启动NFS,v4 不需要rpcbind
service rpcbind stop service rpcidmapd stop service nfs restart service nfslock stop
查看 export 设置
# exportfs /www 172.16.1.2/32 /www/logs 172.16.1.0/24
mount NFSv4
mount -t nfs4 172.16.1.15:/logs /mnt
查看NFS正在使用的端口
rpcinfo -p localhost
vi /etc/sysconfig/nfs
LOCKD_TCPPORT=32803 LOCKD_UDPPORT=32769 MOUNTD_PORT=892 RQUOTAD_PORT=875 STATD_PORT=662 STATD_OUTGOING_PORT=2020
service nfs restart
iptables -I INPUT -m state --state NEW -p tcp \
-m multiport --dport 111,892,2049,32803 -s 192.168.0.0/24 -j ACCEPT
iptables -I INPUT -m state --state NEW -p udp \
-m multiport --dport 111,892,2049,32769 -s 192.168.0.0/24 -j ACCEPT