keepalived 雙主 lvs

一、本文基於上一篇主備配置案例場景，修改為雙主模式

二、雙主配置文件，即兩組互為主備

1> 192.168.1.109配置文件

global_defs {
notification_email {[email protected]
br/>[email protected]
br/>[email protected]
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr

vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}

vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.50
}
}

virtual_server 192.168.1.50 80 {
delay_loop 6
lb_algo wrr

lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.1.111 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.1.112 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

vrrp_instance VI_2 {
state BACKUP
interface eth0
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.51
}
}

virtual_server 192.168.1.51 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.1.112 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.1.111 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

2> 192.168.1.110配置文件

global_defs {
notification_email {[email protected]
br/>[email protected]
br/>[email protected]
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}

vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.50
}
}

virtual_server 192.168.1.50 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.1.111 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.1.112 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

vrrp_instance VI_2 {
state MASTER
interface eth0
virtual_router_id 52
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.51
}
}

virtual_server 192.168.1.51 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.1.112 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.1.111 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

三、狀態

1> ip: 192.168.1.109 vip:192.168.1.50

2> ip: 192.168.1.110 vip:192.168.1.51

四、dns輪循

這個域名是不存在的域名直接本地局域網緩存訪問，不會走外網。雙主，任何一臺down掉不影響訪問。還可以用dns做負載。

keepalived + lvs + nginx 雙主配置案例 (2)