求章博士和各位大仙指点：piranha dr模式，最简单测试行不通

我看了论坛的文章《http://www.linuxtone.org/html/07/t-1607.html》
准备了3台机器，都装了redhat el 5.3，都只有一张网卡。
lvs－active: 192.168.4,170－真实ip
lvs-vip: 192.168.4.190－准备虚拟的ip
realserver1: 192.168.4.171－真实ip
realserver2: 192.168.4.172－真实ip

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用http://localhost:3636配置后得到lvs.cf

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serial_no = 35
primary = 192.168.4.170
service = lvs
backup = 0.0.0.0
heartbeat = 1
heartbeat_port = 539
keepalive = 6
deadtime = 18
network = direct
nat_nmask = 255.255.255.0
debug_level = NONE
virtual lvs1 {
active = 1
address = 192.168.4.190 eth0:1
vip_nmask = 255.255.255.0
port = 80
pmask = 255.255.255.0
send = "GET / HTTP/1.0\r\n\r\n"
expect = "HTTP"
use_regex = 0
load_monitor = none
scheduler = wrr
protocol = tcp
timeout = 6
reentry = 15
quiesce_server = 0
server rs1 {
address = 192.168.4.171
active = 1
weight = 1
}
server rs2 {
address = 192.168.4.172
active = 1
weight = 1
}
}
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启动pulse服务，网页显示信息如下。
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CURRENT LVS ROUTING TABLE IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddressort Scheduler Flags
-> RemoteAddressort Forward Weight ActiveConn InActConn
TCP 192.168.4.190:80 wrr
-> 192.168.4.171:80 Route 1 0 0
-> 192.168.4.172:80 Route 1 0 0

CURRENT LVS PROCESSES
root 4560 0.0 0.0 1904 344 ? Ss 09:13 0:00 pulse
root 4614 0.0 0.0 1888 616 ? Ss 09:13 0:00 /usr/sbin/lvsd --nofork -c /etc/sysconfig/ha/lvs.cf
root 4632 0.0 0.0 1868 672 ? Ss 09:13 0:00 /usr/sbin/nanny -c -h192.168.4.171 -p 80 -s GET / HTTP/1.0\r\n\r\n -x HTTP -a 15 -I/sbin/ipvsadm -t 6 -w 1 -V 192.168.4.190 -M g -U none --lvs
root 4633 0.0 0.0 1868 656 ? Ss 09:13 0:00 /usr/sbin/nanny -c -h192.168.4.172 -p 80 -s GET / HTTP/1.0\r\n\r\n -x HTTP -a 15 -I/sbin/ipvsadm -t 6 -w 1 -V 192.168.4.190 -M g -U none --lvs
root 10774 0.0 1.2 81240 22160 pts/1 S+ 10:29 0:00 gedit /etc/sysconfig/ha/lvs.cf
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配置主LVS服务器.
# vi /etc/sysctl.conf找到下面行 //启用数据转发.
net.ipv4.ip_forward = 0将0 改成1，net.ipv4.ip_forward = 1
执行如下命令来应用：sysctl –p
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realserver上我做了如下配置
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ifconfig lo:0 192.168.4.190 netmask 255.255.255.255 broadcast 192.168.4190
/sbin/route add -host 192.168.4.190 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
sysctl -p >/dev/null 2>&1 //这话我不知干什么
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realserver 都开了http的服务，都能访问
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现在我的情况是：http://192.168.4.190
不能打开，有的人说 注意路由，可是同网段 无需通过路由器进行转发的

清各位高手帮忙看看。