当 Cloudflare 检测到 Cloudflare One Client 的连接性问题或应用程序性能下降时，管理员可以接收警报。通知可以通过电子邮件、webhook 和第三方服务发送。
DEX 通知在 Cloudflare 仪表板 ↗上配置。有关更多信息，请参阅创建通知。
Device connectivity anomaly
Who is it for?Zero Trust customers who want to be notified when Cloudflare detects a spike or drop in the number of devices connected to the WARP client.
Other options / filters- Alert configuration: Choose when to trigger a notification. Available options are Connectivity spike, Connectivity drop, and Connectivity spike or drop.
- Filters:
- Colo: Cloudflare data center that the device is connected to.
- Platform: Operating system of the device.
- Version: WARP client version (for example,
2024.3.409.0). - Mode: WARP mode deployed on the device.
All Cloudflare Zero Trust plans.
What should you do if you receive one?Review your fleet status to investigate why the spike or drop occurred and which devices are impacted.
Additional informationTo learn more about the alert logic, refer to Z-score.
DEX test latency
Who is it for?Zero Trust customers who wish to receive alerts when there is a spike or drop in application latency, as measured by the HTTP test Resource Fetch time or Traceroute test Round trip time. Requires setting up a DEX test.
Other options / filters- Alert configuration: Choose when to trigger a notification. Available options are Latency spike, Latency drop, and Latency spike or drop.
- Filters:
- Colo: Cloudflare data center that the device is connected to.
- Platform: Operating system of the device.
- Version: WARP client version (for example,
2024.3.409.0). - Test name: Choose which DEX test the alert should monitor. You will receive individual notifications for each test.
All Cloudflare Zero Trust plans.
What should you do if you receive one?View your test results to investigate why the spike occurred.
Additional informationTo learn more about the alert logic, refer to Z-score.
DEX test low availability
Who is it for?Zero Trust customers who wish to receive alerts when the percentage of successful HTTP or traceroute requests to an application drops below the selected service-level objective (SLO). Requires setting up a DEX test.
Other options / filters- Service Level Objective (SLO): Specify the availability threshold that will trigger an alert. Enter a percentage in
xx.xformat (for example,98.0). - Filters:
- Colo: Cloudflare data center that the device is connected to.
- Platform: Operating system of the device.
- Version: WARP client version (for example,
2024.3.409.0). - Test name: Choose which DEX test the alert should monitor. You will receive individual notifications for each test.
All Cloudflare Zero Trust plans.
What should you do if you receive one?View your test results to investigate why the degradation occurred.
Additional informationTo learn more about the alert logic, refer to SLO.
Cloudflare 使用 z-score 来检测异常的流量激增或骤降。z-score ↗ 是当前值与平均值相差的标准差个数。Cloudflare 通过将当前的五分钟与过去的四小时进行比较来计算平均值和标准差。这是每五分钟测量一次。
要触发警报，z-score 值必须高于 3.5 或低于 -3.5，这表明当前值与最近的基线存在显着差异。
服务水平目标（SLO）衡量成功的有效事件的百分比。它被定义为 (good events / valid events) * 100，其中有效事件是可以在给定时间段内测量的事件。DEX 通知评估短时间窗口（五分钟）和长时间窗口（一小时），如果在这两个窗口中的任何一个中可用性降至 SLO 阈值以下，则会触发警报。