5.观察各节点的服务启动后的日志：
MASTER节点的日志；
[root@proxy keepalived]# tail -f /var/log/messages
Jan 17 15:57:42 proxy Keepalived[15019]: Starting Keepalived v1.2.13 (10/15,2014)
Jan 17 15:57:42 proxy Keepalived[15021]: Starting Healthcheck child process, pid=15024
Jan 17 15:57:42 proxy Keepalived[15021]: Starting VRRP child process, pid=15025
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Netlink reflector reports IP 172.16.31.52 added
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Netlink reflector reports IP fe80::a00:27ff:fe3b:2360 added
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Registering Kernel netlink reflector
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Registering Kernel netlink command channel
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Registering gratuitous ARP shared channel
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Netlink reflector reports IP 172.16.31.52 added
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Netlink reflector reports IP fe80::a00:27ff:fe3b:2360 added
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Registering Kernel netlink reflector
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Registering Kernel netlink command channel
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Configuration is using : 63202 Bytes
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: Using LinkWatch kernel netlink reflector...
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Configuration is using : 16989 Bytes
Jan 17 15:57:42 proxy Keepalived_vrrp[15025]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)]
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Using LinkWatch kernel netlink reflector...
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Activating healthchecker for service [172.16.31.50]:8080
Jan 17 15:57:42 proxy Keepalived_healthcheckers[15024]: Activating healthchecker for service [172.16.31.51]:8080
Jan 17 15:57:43 proxy Keepalived_vrrp[15025]: VRRP_Instance(VI_1) Transition to MASTER STATE
Jan 17 15:57:44 proxy Keepalived_vrrp[15025]: VRRP_Instance(VI_1) Entering MASTER STATE
Jan 17 15:57:44 proxy Keepalived_vrrp[15025]: VRRP_Instance(VI_1) setting protocol VIPs.
Jan 17 15:57:44 proxy Keepalived_healthcheckers[15024]: Netlink reflector reports IP 172.16.31.188 added
Jan 17 15:57:44 proxy Keepalived_vrrp[15025]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 172.16.31.188
BACKUP节点的日志：
[root@proxy2 keepalived]# tail -f /var/log/messages
Jan 17 15:57:42 proxy2 Keepalived[15005]: Starting Keepalived v1.2.13 (10/15,2014)
Jan 17 15:57:42 proxy2 Keepalived[15007]: Starting Healthcheck child process, pid=15009
Jan 17 15:57:42 proxy2 Keepalived[15007]: Starting VRRP child process, pid=15010
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Netlink reflector reports IP 172.16.31.53 added
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Netlink reflector reports IP 172.16.31.53 added
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Netlink reflector reports IP fe80::a00:27ff:fe6e:bd28 added
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Registering Kernel netlink reflector
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Registering Kernel netlink command channel
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Registering gratuitous ARP shared channel
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Netlink reflector reports IP fe80::a00:27ff:fe6e:bd28 added
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Registering Kernel netlink reflector
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Registering Kernel netlink command channel
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Opening file '/etc/keepalived/keepalived.conf'.
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Configuration is using : 16991 Bytes
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Configuration is using : 63204 Bytes
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: Using LinkWatch kernel netlink reflector...
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: VRRP_Instance(VI_1) Entering BACKUP STATE
Jan 17 15:57:42 proxy2 Keepalived_vrrp[15010]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)]
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Using LinkWatch kernel netlink reflector...
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Activating healthchecker for service [172.16.31.50]:8080
Jan 17 15:57:42 proxy2 Keepalived_healthcheckers[15009]: Activating healthchecker for service [172.16.31.51]:8080
6.开启Master节点与Backup节点服务器的路由转发功能
#sed -i 's/net.ipv4.ip_forward = 0/net.ipv4.ip_forward = 1/g' /etc/sysctl.conf