KVS Keepalived DR环境配置方法（一）

1、web3和web4都要操作

准备RS的web服务，web3/web4安装httpd

yum install httpd -y　　　

2、web3和web4都要操作

[root@web3 ~]# service start httpd

start: unrecognized service

[root@web3 ~]# service httpd start

Starting httpd: httpd: apr_sockaddr_info_get() failed for web3

httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

                                                           [  OK  ]

[root@web3 ~]# chkconfig httpd on

[root@web3 ~]# chkconfig --list|grep httpd

httpd           0:off   1:off   2:on    3:on    4:on    5:on    6:off

[root@web3 ~]# 

3、访问测试

[root@web4 ~]# curl 192.168.122.53

welcome to web3

You have new mail in /var/spool/mail/root

[root@web4 ~]# curl 192.168.122.54

welcome to web4

[root@web4 ~]# 

4、web3和web4都要操作，开启arp抑制

[root@web3 ~]# cat arp.sh 

#!/bin/bash

case $1 in

start)

        echo 1 >/proc/sys/net/ipv4/conf/all/arp_ignore

        echo 1 >/proc/sys/net/ipv4/conf/lo/arp_ignore

        echo 2 >/proc/sys/net/ipv4/conf/all/arp_announce

        echo 2 >/proc/sys/net/ipv4/conf/lo/arp_announce

        ;;

stop)

        echo 0 >/proc/sys/net/ipv4/conf/all/arp_ignore

        echo 0 >/proc/sys/net/ipv4/conf/lo/arp_ignore

        echo 0 >/proc/sys/net/ipv4/conf/all/arp_announce

        echo 0 >/proc/sys/net/ipv4/conf/lo/arp_announce

        ;;

esac

[root@web3 ~]#

[root@web3 ~]# chmod +x arp.sh 

[root@web3 ~]# ./arp.sh 

5、RS配置VIP接口，web3/web4 同时配置

[root@web3 ~]# ifconfig lo:0 192.168.122.200 netmask 255.255.255.255 broadcast 192.168.122.200 up

You have new mail in /var/spool/mail/root

[root@web3 ~]# route add -host 192.168.122.200 dev lo:0

[root@web3 ~]# route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

192.168.122.200 0.0.0.0         255.255.255.255 UH    0      0        0 lo

192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0

169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0

0.0.0.0         192.168.122.1   0.0.0.0         UG    0      0        0 eth0

　　

6、准备director的ipvsadm web1/web2上操作

yum install ipvsadm -y　　　

7、web1/web2上操作

[root@web1 ~]# ipvsadm -C

[root@web1 ~]# ipvsadm -A -t 192.168.122.200:80 -s rr

[root@web1 ~]# ipvsadm -a -t 192.168.122.200:80 -r 192.168.122.53 -g -w 1 

[root@web1 ~]# ipvsadm -a -t 192.168.122.200:80 -r 192.168.122.54 -g -w 2

[root@web1 ~]# ipvsadm -L -n

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

TCP  192.168.122.200:80 rr

  -> 192.168.122.53:80            Route   1      0          0         

  -> 192.168.122.54:80            Route   2      0          0         

[root@web1 ~]#