lvs+keepalive实现双主模式（采用DR），同时实现TCP和UDP检测实现非web端的负载均衡，同时实现跨网段的通讯
因业务需求，需要把lvs备机也使用上，故！ 使用双主，相互是主的同时也相互是备机。本人用nat测试发现RS无法实现负载均衡，故采用DR模式来实现非web端的负载均衡
lvs1: DIP 10.60.196.183
VIP 10.60.196.185
lvs2：DIP 10.60.196.184
VIP 10.60.196.186
DR1：10.60.196.181
DR2：10.60.196.182
--------------------------------------------------------
我这里TCP和UDP同时使用
LVS：需要开启IP转发
vim /etc/sysctl.conf
keepalive配置：
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from admin@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP #另外一台keepalive这里换成MASTER
interface eth0
virtual_router_id 51
priority 98 #这里100
advert_int 1
authentication {
auth_type PASS
auth_pass 11112222
}
virtual_ipaddress {
10.60.196.186/32 label eth0:0
}
}
vrrp_instance VI_2 {
state MASTER #另一台BUCKUP
interface eth0
virtual_router_id 150
priority 100 # 这里99
advert_int 1
authentication {
auth_type PASS
auth_pass 11112222
}
virtual_ipaddress {
10.60.196.185/32 label eth0:1
}
}
virtual_server 10.60.196.186 33001 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol TCP
persistence_timeout 0
real_server 10.60.196.181 33001 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 10.60.196.182 33001 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
virtual_server 10.60.196.186 33001 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol UDP
persistence_timeout 0
real_server 10.60.196.181 33001 {
weight 1
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
real_server 10.60.196.182 33001 {
weight 1
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
virtual_server 10.60.196.185 33001 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol TCP
persistence_timeout 0
real_server 10.60.196.181 33001 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 10.60.196.182 33001 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
virtual_server 10.60.196.185 33001 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol UDP
persistence_timeout 0
real_server 10.60.196.181 33001 {
weight 1
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
real_server 10.60.196.182 33001 {
weight 1
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
配置好以后添加路由
route add -host 10.60.196.185 dev eth0:1
route add -host 10.60.196.186 dev eth0:0
rs：需要添加路由同时绑定VIP
RS1和RS2配置相同
ifconfig eth0:0 10.60.196.186 netmask 255.255.255.0
ifconfig eth0:1 10.60.196.185 netmask 255.255.255.0
route add -host 10.60.196.185 dev eth0:1
route add -host 10.60.196.186 dev eth0:0
如果还需要外网可以通过另外搭建搭建两台机器做iptables转发 上面需要有一个公网IP和一个内网IP，通过iptables把外网请求全部转发到VIP上面，一台做一个VIP转发 （iptables这里就不写了），这样就可以实现跨网段的通讯了！ 不同网段原因一样
