系统环境：Centos6.3 服务器：openfire3.8.0
架构示意图如下：
步骤：
1 在43和45机器上操作
安装lvs和keepalived
# yum install ipvs*
# ipvsadm
#tar zxvf keepalived-1.2.7.tar.gz
#cd keepalived-1.1.15
#./configure && make && make install
#find / -name keepalived # 查看keepalived位置
#cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
#cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
#mkdir /etc/keepalived
#cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
#cp /usr/local/sbin/keepalived /usr/sbin/
#service keepalived start|stop #做成系统启动服务方便管理.
配置keepalived
vi /etc/keepalived/keepalived.conf
bal_defs {
notification_email {
email_from [email protected]
smtp_server 127.0.0.1
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER # 备份服务器上将MASTER改为BACKUP
interface eth1
lvs_sync_daemon_inteface eth1
virtual_router_id 51
priority 100 # 备份服务上将100改为90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.27.0.40
}
}
virtual_server 10.27.0.40 5222 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 60
protocol TCP
real_server 10.27.0.34 5222 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 5222
}
}
real_server 10.27.0.36 5222 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 5222
}
}
}
# service keepalived start # 启动lvs
# ip add # 查看lvs状况
2 34和36机器上的配置
# cd /opt
# vi lvs_real.sh
cription: Config realserver
#Written by : http://kerry.blog.51cto.com
SNS_VIP=10.27.0.40
/etc/rc.d/init.d/functions
case "$1" in
start)
/sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
/sbin/route add -host $SNS_VIP 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
echo "RealServer Start OK"
;;
stop)
/sbin/ifconfig lo:0 down
/sbin/route del $SNS_VIP >/dev/null 2>&1
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0
# chmod a+x lvs_real.sh
# ./lvs_real.sh start