lvs主备NAT模式上课用例（keepalived）
主节点配置! Configuration File for keepalived
global_defs {
notification_email {
admin@163.com
}
notification_email_from sender@163.com
smtp_server smtp.163.com
smtp_connect_timeout 30
router_id LVS_master
}
vrrp_instance VIlvs {
state MASTER
interface eth2
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1122
}
virtual_ipaddress {
172.16.11.200
192.168.7.1 dev eth1
}
}
virtual_server 172.16.11.200 80 {
delay_loop 6
lb_algo rr
lb_kind NAT
nat_mask 255.255.255.0
#persistence_timeout 50
protocol TCP
real_server 192.168.7.156 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.7.158 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
}
}
备节点配置
! Configuration File for keepalived
global_defs {
notification_email {
admin@163.com
}
notification_email_from sender@163.com
smtp_server smtp.163.com
smtp_connect_timeout 30
router_id LVS_slave
}
vrrp_instance VIlvs {
state SLAVE
interface eth5
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1122
}
virtual_ipaddress {
172.16.11.200
192.168.7.1 dev eth4
}
}
virtual_server 172.16.11.200 80 {
delay_loop 6
lb_algo rr
lb_kind NAT
nat_mask 255.255.255.0
#persistence_timeout 50
protocol TCP
real_server 192.168.7.156 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.7.158 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
}
}
内核参数设置
echo 1 > /proc/sys/net/ipv4/ip_forward
-A POSTROUTING -s 192.168.7.0/24 -o eth2 -j SNAT --to-source 172.16.11.162
WEB服务器节点
只需开启WEB服务，默认网关指向LVS服务器即可
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