安装LVS+KEEPALIVED

旃麒雅

1:yum -y install ipvsadm keepalived

2:在/etc/rc.local里添加

echo 1 > /proc/sys/net/ipv4/ip_forward

3:编辑/etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
notification_email {
ops@58.com
}
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 {     //每个实例取一个好记的名字
state MASTER         //主配MASTER，备配BACKUP
interface eth1
virtual_router_id 200 //这个值主备要一样，但是不要和其他lvs冲突
priority 100         //主配100，备配80
advert_int 1
authentication {
auth_type PASS
auth_pass 111158
}
virtual_ipaddress {
211.151.111.4
}
}
virtual_server 211.151.111.4 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 50
protocol TCP
real_server 10.4.11.24 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 10.4.11.25 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}


4：编辑/etc/sysconfig/keepalived

KEEPALIVED_OPTIONS="-D -S 2"

5：编辑/etc/logrotate.d/syslog，加一行

/var/log/keepalived.log

6：service keepalived restart


[编辑]RS安装


1：编辑/opt/script/lvs_dr.sh

#!/bin/sh
VIP=211.151.111.4  #这里填VS的VIP
/etc/rc.d/init.d/functions
case "$1" in
start)
echo "Start LVS of RealServer"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 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
;;
stop)
/sbin/ifconfig lo:0 down
echo "Stop LVS of RealServer"
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 "Usage:$0{start|stop}"
exit 1
esac


2：设置权限，启动服务

chmod 777 /opt/script/lvs_dr.sh
/opt/script/lvs_dr.sh start


3：编辑/etc/rc.local，添加一行

/opt/script/lvs_dr.sh start