CloudMonitor provides multiple metrics, such as the queries per second (QPS), bandwidth, and byte hit ratio, to help you monitor the status of Content Delivery Network (CDN). After you add a CDN domain name, CloudMonitor automatically collects data based on these metrics. You can log on to the CloudMonitor console and view the monitoring details on the CDN monitoring page. CloudMonitor also allows you to set alert rules for these metrics so that you can receive alerts when any exception occurs.

Monitoring service

  • Metrics
    Metric Description Dimension Unit Minimum frequency
    Visits per second The number of visits in the monitoring period divided by the monitoring period. Domain name QPS 1 minute
    Bandwidth The maximum traffic per unit time. Domain name bit/s 1 minute
    Hit ratio The probability that request bytes are found in the cache in the monitoring period. The number of request bytes is the number of requests multiplied by traffic. The byte hit ratio reflects the back-to-origin traffic. Domain name Percentage 1 minute
    Outbound traffic to the Internet The traffic from CDN to the Internet. Domain name Bytes 5 minutes
    Percentage of status codes 4xx The percentage of HTTP status codes 4xx to all the returned HTTP status codes in the monitoring period. Domain name Percentage 1 minute
    Percentage of status codes 5xx The percentage of HTTP status codes 5xx to all the returned HTTP status codes in the monitoring period. Domain name Percentage 1 minute
  • View monitoring data
    1. Log on to the CloudMonitor console.
    2. In the left-side navigation pane, choose Cloud Service Monitoring > Alibaba Cloud CDN. The CDN page appears.
    3. Click the Domain Name List tab.
    4. Click a domain name or click Monitoring Charts in the Actions column for a domain name to view the monitoring charts.
    5. Optional. Click the zoom-in icon in the upper-right corner of a monitoring chart to enlarge the chart.

Alerting service

  • Set alert rules
    1. Log on to the CloudMonitor console.
    2. In the left-side navigation pane, choose Cloud Service Monitoring > Alibaba Cloud CDN. The CDN page appears.
    3. Click the Domain Name List tab.
    4. Click Alarm Rules in the Actions column for a domain name to view the alert rules.
    5. Click Create Alarm Rule in the upper-right corner of the page. Specify the resource range, set alert rules, set the notification method, and then click Confirm.
  • Parameters

    For more information about alert rule parameters, see Alarm rule parameters.