Re: question about using lvs to build the DNS cluster

[tao cui <taocuibj@xxxxxxxxxxxx>]

i had solved the problem. it was caused by my linux firewall.
it can't forward udp .

tao cui <taocuibj@xxxxxxxxxxxx> wrote:
hello :
i am using the lvs to build dns cluster,use the DR,

Topology:

[client] (windows 2000 professional)
|
{lan}
|
[director](standard kernel 2.4.18 ipvs-1.0.9,ipvsadm-1.21)
| eth0:1 192.168.1.1 |
| eth0 192.168.1.9 |
| |
[Primary DNS Server ] (Window 2000 server) [Other Server:Mail Web etc]
192.168.1.11 vip 192.168.1.1 no arp

i want to use the dns to resolve the request from the client ,and the request 
forward by the director .such as client send the request(eg:rs1.lvs.com) to 
it's first DNS server(director),and the director forward the request to primary 
dns server. 

the scripts on the director is :

#!/bin/bash

cat /proc/sys/net/ipv4/ip_forward
echo "0" > /proc/sys/net/ipv4/ip_forward

echo "1" > /proc/sys/net/ipv4/conf/all/send_redirects
cat /proc/sys/net/ipv4/conf/all/send_redirects
echo "1" > /proc/sys/net/ipv4/conf/default/send_redirects
cat /proc/sys/net/ipv4/conf/default/send_redirects
echo "1" > /proc/sys/net/ipv4/conf/eth1/send_redirects
cat /proc/sys/net/ipv4/conf/eth1/send_redirects

/sbin/ifconfig eth1:1 192.168.1.1 broadcast 192.168.1.1 netmask 255.255.255.255
/sbin/route add -host 192.168.1.1 dev eth1:1


#setup ipvsadm table

/sbin/ipvsadm -A -u 192.168.1.1:53 -s wrr
/sbin/ipvsadm -a -u 192.168.1.1:53 -r 192.168.1.11:53 -g -w 1

/sbin/ipvsadm -A -t 192.168.1.1:53 -s wrr
/sbin/ipvsadm -a -t 192.168.1.1:53 -r 192.168.1.11:53 -g -w 1

issue:

can't resolve the domain name(eg:rs1.lvs.com),and when i use ipvsadm, there is 
no connect in it.

why?

thanks a lot.




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