用keepalived实现单主的LVS-DR

#准备两台后端RS主机
[root@rs1 ~]# yum install httpd -y
 [root@rs1 ~]# echo RS1 - 172.25.254.101 > /var/www/html/index.html
 [root@rs1 ~]# ip addr add 172.25.254.100/32 dev lo
 [root@rs1 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
 [root@rs1 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 [root@rs1 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
 [root@rs2 ~]# yum install httpd -y
 [root@rs1 ~]# echo RS1 - 172.25.254.101 > /var/www/html/index.html
 [root@rs2 ~]# ip addr add 172.25.254.100/32 dev lo
 [root@rs2 ~]#  echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
 [root@rs2 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 [root@rs2 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
 [root@node30 ~]# yum install httpd -y

[root@node30 ~]# echo RS1 - 172.25.254.101 > /var/www/html/index.html
 [root@node30 ~]# ip addr add 172.25.254.100/32 dev lo
 [root@node30 ~]#  echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
 [root@node30 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 [root@node30
 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

配置keepalived

root@rhel7-ka1 ~]# vim /etc/keepalived/keepalived.conf

这相当于ipvsadm -A 指定vip

和ipavadm -a -t 指定ip