LVS+Keepalived负载均衡架构搭建

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 sns-lvs@gmail.com

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