Linux system Architecture-DR Setup for the LVS of LB cluster

On the basis of the LVS NAT mode

1. Clear the Ipvsadm rule

Ipvsadm--ln

2. Clear the Iptables rule

Iptables-t nat-f

3. Modify the RS network adapter configuration, modify the back gateway

vi/etc/sysconfig/network-scripts/ifcfg-eth0 restart Eth0ifdown eth0; ifup eth0

4.dir NIC

Ifdown eth1

dirip:192.168.1.118 rs1ip:192.168.1.116 rs2ip:192.168.1.115 is considered an extranet IP.

Add a virtual ip,vip above dir

vim/usr/local/sbin/lvs_dr.sh

#! /bin/Bashecho1>/proc/sys/net/ipv4/IP_FORWARDIPV=/sbin/IPVSADMVIP=192.168.1.100rs1=192.168.1.116rs2=192.168.1.115ifconfig eth0:0$VIP Broadcast $VIP netmask255.255.255.255Uproute Add-host $vip Dev eth0:0$IPV-C$IPV-a-t $VIP: the-s RR$IPV-a-t $VIP: the-R $rs 1: the-g-w1$IPV-a-t $VIP: the-R $rs 2: the-g-w1

echo 1 >/proc/sys/net/ipv4/ip_forward//Open port forwarding
Ipv=/sbin/ipvsadm
vip=192.168.1.100
rs1=192.168.1.116
rs2=192.168.1.115
Ifconfig eth0:0 $VIP broadcast $VIP netmask 255.255.255.255 up//VIP Subnet mask is 4 x 255, only issued
Route add-host $VIP Dev eth0:0//Add a route
$IPV-C
$IPV-A-T $VIP: 80-s RR
$IPV-A-t $vip: 80-r $rs 1:80-g-W 1
$IPV-A-t $vip: 80-r $rs 2:80-g-W 1

SH!$

ifconfig Virtual network card has come out eth0: 0    Link encap:ethernet  : 0C::CC: One: E7          inet addr:192.168.  1.100  bcast:192.168.  1.100  Mask:255.255.  255.255up          broadcast RUNNING multicast  MTU:  Metric:1

Ipvsadm-Ln more out of a vipip Virtual Server version1.2.1(size=4096) Prot localaddress:port Scheduler Flags-remoteaddress:port Forward Weight activeconn inactconntcp192.168.1.100: theRR-192.168.1.115: theRoute1      0          0-192.168.1.116: theRoute1      0          0

5.rs1-2 all write a script.

vim/usr/local/sbin/lvs_rs.sh

#! /bin/BASHVIP=192.168.1.100ifconfig lo:0$VIP Broadcast $VIP netmask255.255.255.255Uproute Add-host $vip Lo:0Echo"1">/proc/sys/net/ipv4/conf/lo/Arp_ignoreecho"2">/proc/sys/net/ipv4/conf/lo/Arp_announceecho"1">/proc/sys/net/ipv4/conf/all/Arp_ignoreecho"2">/proc/sys/net/ipv4/conf/all/arp_announce

Ifconfig initiated the loopback virtual network card lo: 0       Link encap:local Loopback          inet addr:192.168.  1.100  Mask:255.255.  255.255up          LOOPBACK RUNNING  MTU:16436  Metric:1

6. Testing

Curl VIP on the fourth machine

Linux system Architecture-DR Setup for the LVS of LB cluster