vrrp_instance DHCP_VIP {
    state MASTER
    interface eth00
    virtual_router_id 5
    priority 150  
    advert_int 1

    max_auto_priority 255
    authentication {
        auth_type PASS
        auth_pass 12345
    }

    virtual_ipaddress {
        192.168.16.5  # DHCP 服务器的 VIP
    }

    track_script {
        chk_dhcp
    }

    garp_master_delay 1
    garp_master_repeat 5  # 发送 5 次 GARP

    notify_fault "/etc/keepalived/failover.sh"  # 触发切换
    notify_master "/etc/keepalived/notify_master.sh" # 触发恢复
    notify_backup "/etc/keepalived/notify_backup.sh"
}

vrrp_script chk_dhcp {
    script "/etc/keepalived/chk_dhcp.sh"
    interval 2
    #weight -50  # 进程挂掉，降低 50 优先级，触发 VIP 迁移
    weight -30  # 进程挂掉，降低 50 优先级，触发 VIP 迁移
    fall 2         # 2 次失败后触发
    rise 2         # 2 次检测成功后恢复
}