一、仅lvs服务器端安装
yum install ipvsadm openssl-devel popt popt-devel libnl-devel
cd /opt/src/
tar xzvf keepalived-1.2.7.tar.gz
cd keepalived-1.2.7
./configure
make && make install
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/
修改/etc/keepalived/keepalived.conf文件
[root@WEB ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
123@123.com
}
notification_email_from test@foxmail.com
smtp_server smtp.foxmail.com
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.88
}
}
virtual_server 192.168.1.88 80 {
delay_loop 6
lb_algo lc
#lb_kind DR
lb_kind TUN
persistence_timeout 60
protocol TCP
real_server 192.168.2.18 80 {
weight 3
TCP_CHECK {
connect_timeout 30
nb_get_retry 3
delay_before_retry 2
connect_port 80
}
}
real_server 192.168.3.68 80 {
weight 3
TCP_CHECK {
connect_timeout 30
nb_get_retry 3
delay_before_retry 2
connect_port 80
}
}
}
[root@WEB ~]#
[root@WEB ~]# service ipvsadm start
[root@WEB ~]# service keepalived start
注意：
打开转发或关闭，dr/tun模式无影响
echo "1" > /proc/sys/net/ipv4/ip_forward
二、实际服务器端的操作
[root@]# cat /usr/local/vip_tun.sh
#!/bin/bash
#srcipt to start LVS TUN realserver
VIP=192.168.1.88
case "$1" in
start)
#start LVS-TUN real server on this machine
/sbin/ifconfig tunl0 down
/sbin/ifconfig tunl0 up
echo 1 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo 0 > /proc/sys/net/ipv4/conf/tunl0/rp_filter
echo 1 > /proc/sys/net/ipv4/conf/tunl0/forwarding
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
/sbin/ifconfig tunl0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev tunl0
;;
stop)
#stop lvs-TUN real server loopback device
/sbin/ifconfig tunl0 down
/sbin/ifconfig tunl0 down
echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo 1 > /proc/sys/net/ipv4/conf/tunl0/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
;;
status)
islothere='/sbin/ifconfig tunl0 |grep $VIP'
isrothere='netstat -rn |grep "tunl0"|grep $VIP'
if [ ! "$islothere" -o ! "$isrothere" ];then
echo "LVS-TUN real server stopped"
else echo "LVS-TUN Running"
fi
;;
*)
echo "$0: Usage: $0 {start|stop|status}"
exit 1
;;
esac
[root@localhost ~]# /usr/local/vip.sh start|stop|status
三、lvs查看
ipvsadm -ln
ipvsadm -lnc
ipvsadm -l -n --stats
调度算法：rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq
