02-keepalived实现对nginx服务的高可用（主备）

! Configuration File for keepalived

global_defs {
   notification_email {
        root@localhost    #通知邮箱
   }
   notification_email_from keepalived@localhost
   smtp_server 127.0.0.1    #邮箱服务器
   smtp_connect_timeout 30    #邮箱超时时间
   router_id controller1    #本机route ID
   vrrp_mcast_group4 224.0.32.18 #组播地址
}

vrrp_instance keepnginx {    #自定义虚拟路由实例
    state MASTER    #本机虚拟路由状态为master
    interface eno16777736    #心跳传递地址
    virtual_router_id 60    #虚拟路由id
    priority 100    #权重100
    advert_int 1    #1秒检测
    authentication {    #检测方式密码，123456
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        9.110.187.60/24    dev    eno16777736      label   eno16777736:1 #虚拟ip，虚拟ip所在网卡（内网）
    }
}

track_interface {    #追踪检测网卡
        eno16777736　　#外网网卡提供访问
        eno33554960　　#内网网卡访问后端WEB服务器
}
        

! Configuration File for keepalived

global_defs {
   notification_email {
        root@localhost
   }
   notification_email_from keepalived@localhost
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id controller2
}

vrrp_instance keepnginx {
    state BACKUP
    interface eno16777736
    virtual_router_id 60
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        9.110.187.60/24 dev     eno16777736     label   eno16777736:1
    }
}

track_interface {
        eno16777736
        eno33554960
}