前言：

一般這種模式不需要相對復雜的配置，相對單網絡單主模式，多了一個主可用模式。主要實現單網絡雙主故障漂移模式。

1.架構示意圖：

多播IP是：224.0.0.111。

NAT網絡可根據自己的實際情況配置。

+------+

|Client|

+------+

/\

+--------+

|Internet|

+--------+

/\

+--------+

|NAT 網絡|

+--------+

/\

+-----------------------+

| 公網VIP1:172.16.8.100 |

| 公網VIP2:172.16.8.101 |

+-----------------------+

/ \

+-----------------------+ +-----------------------+

| KA+Lvs/Nginx/HAProxy | | KA+Lvs/Nginx/HAProxy |

| || |

| VIP1:Master (eth1) |多播IP| VIP1:BACKUP (eth1) |

| VIP2:BACKUP (eth1) || VIP2:Master (eth1) |

| IP1:172.16.8.10(eth1) | | IP1:172.16.8.11(eth1) |

+-----------------------+ +-----------------------+

\ /

+-----------------------+

| 公網VIP1:172.16.8.100 |

| 公網VIP2:172.16.8.101 |

+-----------------------+

\/

+------+

|資源池|

+------+

2.ka67配置文件：

global_defs {

notification_email {

root@localhost

}

notification_email_from ka@localhost

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id ka67

vrrp_mcast_group4 224.0.0.111

}

vrrp_instance VG_1 {

state MASTER

interface eth0

virtual_router_id 191

priority 100

advert_int 1

authentication {

auth_type PASS

auth_pass renwole0

}

virtual_ipaddress {

172.16.8.100

}

notify_master "/usr/local/keepalived/etc/keepalived/notify.sh master"

notify_backup "/usr/local/keepalived/etc/keepalived/notify.sh backup"

notify_fault "/usr/local/keepalived/etc/keepalived/notify.sh fault"

}

vrrp_instance VG_2 {

state BACKUP

interface eth0

virtual_router_id 192

priority 95

advert_int 1

authentication {

auth_type PASS

auth_pass renwole1

}

virtual_ipaddress {

172.16.8.101

}

notify_master "/usr/local/keepalived/etc/keepalived/notify.sh master"

notify_backup "/usr/local/keepalived/etc/keepalived/notify.sh backup"

notify_fault "/usr/local/keepalived/etc/keepalived/notify.sh fault"

}

3.ka68配置文件：

global_defs {

notification_email {

root@localhost

}

notification_email_from ka@localhost

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id ka68

vrrp_mcast_group4 224.0.0.111

}

vrrp_instance VG_1 {

state BACKUP

interface eth0

virtual_router_id 191

priority 100

advert_int 1

authentication {

auth_type PASS

auth_pass renwole0

}

virtual_ipaddress {

172.16.8.100

}

notify_master "/usr/local/keepalived/etc/keepalived/notify.sh master"

notify_backup "/usr/local/keepalived/etc/keepalived/notify.sh backup"

notify_fault "/usr/local/keepalived/etc/keepalived/notify.sh fault"

}

vrrp_instance VG_2 {

state MASTER

interface eth0

virtual_router_id 192

priority 95

advert_int 1

authentication {

auth_type PASS

auth_pass renwole1

}

virtual_ipaddress {

172.16.8.101

}

notify_master "/usr/local/keepalived/etc/keepalived/notify.sh master"

notify_backup "/usr/local/keepalived/etc/keepalived/notify.sh backup"

notify_fault "/usr/local/keepalived/etc/keepalived/notify.sh fault"

}

總結

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