lvs-keepavlied 安装配置

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基于centos6.8 系统操作

1.服务lvs 192.168.140.143

web1: 192.168.140.140

web2: 192.168.140.141

2.web安装启动分别操作web1 web2

yum install httpd -y

echo web1 >/var/www/html/index.html

echo web2 >/var/www/html/index.html

service restart httpd

curl http://192.168.140.140 返回 web1

curl http://192.168.140.141 返回 web2

3.lvs 安装配置: lvs机器上操作

yum install keepavlied ipvsadm openssl openssl-devel -y

cat /etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.140.144
}
}
virtual_server 192.168.140.144 80{
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.0
#persistence_timeout 30
protocol TCP
real_server 192.168.140.140 80 {
weight 1
TCP_CHECK {
connect_timeout 6
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.140.141 80 {
weight 1
TCP_CHECK {
connect_timeout 6
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

4.web端添加vip

cat /etc/init.d/lvsrs
#!/bin/bash
#
# Script to start LVS DR real server.
# Decription: LVS DR real server.
. /etc/rc.d/init.d/functions
VIP=192.168.140.144
host=`/bin/hostname`

case "$1" in
start)
# Start LVS-DR real server on this machine.
/sbin/ifconfig lo down
/sbin/ifconfig lo up
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

/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:0
;;

stop)
# Stop LVS-DR real server loopback device(s).
/sbin/ifconfig lo:0 down
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
;;

status)
# Status of LVS-DR real server.
islothere=`/sbin/ifconfig lo:0 | grep $VIP`
isrothere=`netstat -nr | grep "lo:0" | grep $VIP`
if [ ! "$islothere" -o ! "isrothere" ];then
# Either the route or the lo:0 device
# not found.
echo "LVS-DR real server Stoped."
else
echo "LVS-DR real server Running."
fi
;;
*)
# Invalid entry .
echo "$0 : Usage: $0 {start|status|stop}"
exit 1
;;
esac

5.启动各项服务

lvs: /etc/init.d/keepalived start

web12: /etc/init.d/lvsrs start

6.查看lvs连接状态

ipvsadm -Lcn 连接数

ipvsadm -ln 连接

7.crul http://192.168.140.144 轮询返回web1 web2

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