Linux NFS mount: failed, reason given by server: Permission denied

出现该问题一般是因为主存储（server)nfs服务器IP地址不对造句造成的

/usr/src *(rw,sync,no_root_squash)
/home *(rw,sync,no_root_squash)

#/usr/src centos22(rw,sync,no_root_squash)
#/usr/src centos33(rw,sync,no_root_squash)
#/usr/src centos44(rw,sync,no_root_squash)
#/usr/src centos55(rw,sync,no_root_squash)
#/usr/src --root=centos22

LVS负载均衡服务器



eth0 Link encap:Ethernet HWaddr 00:0C:29:4E:B7:C3
inet addr:192.168.0.12 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe4e:b7c3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3088 errors:0 dropped:0 overruns:0 frame:0
TX packets:3106 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:325969 (318.3 KiB) TX bytes:473711 (462.6 KiB)
Interrupt:169 Base address:0x2024

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:688 errors:0 dropped:0 overruns:0 frame:0
TX packets:688 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:52912 (51.6 KiB) TX bytes:52912 (51.6 KiB)

lo:0 Link encap:Local Loopback
inet addr:192.168.0.11 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1





realserver 服务器1

ifconfig eth0 192.168.0.22 netmask 255.255.255.0
route add default gw 192.168.0.1
service portmap start
service nfs start
#mount -t nfs 192.168.0.11:/usr/src /usr/src

/usr/local/php/sbin/php-fpm start
/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

/realserver.sh start

mount -t nfs 192.168.0.12:/usr/src /usr/src
mount -t nfs 192.168.0.12:/home /home

chattr +i /etc/resolv.conf

realserver 服务器2

#!/bin/sh

touch /var/lock/subsys/local
ifconfig eth0 192.168.0.33 netmask 255.255.255.0
route add default gw 192.168.0.1
#chattr +i /etc/resolv.conf
service portmap start
service nfs start
#mount -t nfs 192.168.0.11:/usr/src /usr/src
/usr/local/php/sbin/php-fpm start
/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

/realserver.sh start

mount -t nfs 192.168.0.12:/usr/src /usr/src
mount -t nfs 192.168.0.12:/home /home
#echo "nameserver 192.168.0.1" > /etc/resolv.conf
~

其中web服务器脚本 realserver.sh

#!/bin/bash
VIP=192.168.0.11
case "$1" in
start)
echo "start lvs RealServer"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "1" >/proc/sys/net/ipv4/ip_forward
;;
stop)
/sbin/ifconfig lo:0 down
/sbin/route del $VIP > /dev/null 2>&1
echo "close LVS RealServer"
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "0" >/proc/sys/net/ipv4/ip_forward
;;
*)
echo "Usage:$0 {start|stop}"
exit 1
esac

其中LVS集群中的每台服务器设置:/etc/hosts

192.168.0.11 centos11
192.168.0.22 centos22
192.168.0.33 centos33
192.168.0.44 centos44
192.168.0.55 centos55

只要把共享存储服务器挂载到所需服务器上运行即可解决上面的问题.