LVS_TUN 实验
实验拓扑http://pmghong.blog.运维网.com/attachment/201305/164230334.png
IP分配
client 192.168.30.1
Router e0/0 10.0.0.123
e0/1 192.168.30.200 (网关)
Director eth0 192.168.30.105/24
eth0:1192.168.30.254/32 (VIP)
Real 1 eth0 192.168.30.113/24
tunl0 192.168.30.254/32 (VIP)
Real 2 eth0 192.168.30.114/24
tunl0 192.168.30.254/32 (VIP)
TUN 模式的拓扑结构与DR的一样，只需要将原先的lo网卡换成tunl网卡
一、配置Real 服务器
1、主页配置
前面的实验中以配置好，这里不再重复
2、配置IP地址
# ifconfig eth0 192.168.30.113/24
# ip addr add dev tunl0 192.168.30.254/32 brd 192.168.30.254
# ip link set dev tunl0 up
#route add default gw 192.168.30.200
# route add -host 192.168.30.254 dev tunl0
# ifconfig eth0 192.168.30.114/24
# ip addr add dev tunl0 192.168.30.254/32 brd 192.168.30.254
# ip link set dev tunl0 up
#route add default gw 192.168.30.200
# route add -host 192.168.30.254 dev tunl0
3、关闭ARP响应
# echo "1" >/proc/sys/net/ipv4/conf/tunl0/arp_ignore
# echo "2" >/proc/sys/net/ipv4/conf/tunl0/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/conf/tunl0/arp_ignore
# echo "2" >/proc/sys/net/ipv4/conf/tunl0/arp_announce
# echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
# echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
二、配置Director 服务器
1、配置IP
# ifconfig eth0 192.168.30.105/24
# ifconfig eth0:1 192.168.30.254 netmask 255.255.255.255 broadcast 192.168.30.254
# route del default gw 10.0.0.2
# route add default gw 192.168.30.200
# route add -host 192.168.30.254 dev tunl0
# echo "0" > /proc/sys/net/ipv4/ip_forward
# echo "1" > /proc/sys/net/ipv4/conf/all/send_redirects
# echo "1" > /proc/sys/net/ipv4/conf/default/send_redirects
# echo "1" > /proc/sys/net/ipv4/conf/eth1/send_redirects
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.0.0 * 255.255.255.0 U 0 0 0 eth1
192.168.30.0 * 255.255.255.0 U 0 0 0 eth0
link-local * 255.255.0.0 U 1002 0 0 eth0
link-local * 255.255.0.0 U 1003 0 0 eth1
default 192.168.30.200 0.0.0.0 UG 0 0 0 eth0
2、配置lvs
# ipvsadm -A -t 192.168.30.254:80 -s rr
# ipvsadm -a -t 192.168.30.254:80 -r 192.168.30.113 -i
# ipvsadm -a -t 192.168.30.254:80 -r 192.168.30.114 -i
3、测试
# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP192.168.30.254:80 rr
-> 192.168.30.113:80 Tunnel 1 0 0
-> 192.168.30.114:80 Tunnel 1 0 0
配置脚本：
============Director===========
#!/bin/bash
VIP=192.168.30.254
RIP1=192.168.30.113
RIP2=192.168.30.114
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo "start LVS of Director Server Tun"
/sbin/ifconfig tunl0 $VIP broadcast $VIP netmask 255.255.255.255
/sbin/route add -host $VIP dev tunl0
/sbin/ipvsadm -C
/sbin/ipvsadm -A -t $VIP:80 -s rr
/sbin/ipvsadm -a -t $VIP:80 -r $RIP1:80 -i
/sbin/ipvsadm -a -t $VIP:80 -r $RIP2:80 -i
/sbin/ipvsadm
echo "0" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/conf/all/send_redirects
echo "1" > /proc/sys/net/ipv4/conf/default/send_redirects
echo "1" > /proc/sys/net/ipv4/conf/eth1/send_redirects
;;
stop)
echo "stop LVS of Director Server Tun "
/sbin/ifconfig tunl0 down
/sbin/ipvsadm -C
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0
============Real Server===========
#!/bin/bash
VIP=192.168.30.254
RIP1=192.168.30.113
RIP2=192.168.30.114
case $1 in
start)
echo "Start LVS of TUN"
/sbin/ifdown eth1
/sbin/ifconfig tunl0 $VIP netmask 255.255.255.255 broadcast $VIP
/sbin/route add -host $VIP dev tunl0
echo "1" > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
;;
stop)
echo "Stop LVS of TUN"
/sbin/ifconfig tunl0 down
echo "0" > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo "0" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage:$0 {start|stop}"
exit 1
esac
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