云监控宕机

云监控宕机后无法短信报警到后台检查，发现无法发送短信了！后台手机选项无法勾选，请云监控管理员检查！

云监控添加了非云端主机，怎么设置报警规则检测此主机是否宕机？

阿里云解析DNS 有没有监控服务器宕机后切换其他线路的功能？类似于与 DNSPOD的D监控，其中一台服务器宕机后自动切换到其他可用线路。谢谢。

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