You can use the scaling group monitoring feature to view metrics such as the CPU utilization, memory usage, loads, system disk read/write, and network bandwidth of all Elastic Compute Service (ECS) instances in your scaling group. This allows you to obtain the utilization of resources in the scaling group within a month.

Background information

  • This topic is only suitable for the scaling groups that contain ECS instances.
  • You can view the following types of metrics:
    • CPU, Memory, and Load Metrics: CPU Utilization (%), Memory Usage (%), and Loads.
    • System Disk Metrics: System Disk Read/Write BPS (byte/s) and System Disk IOPS (count/s)
    • Network Metrics: Public Bandwidth (bit/s) and Internal Bandwidth (bit/s).


  1. Log on to the Auto Scaling console.
  2. In the left-side navigation pane, click Scaling Groups.
  3. In the top navigation bar, select a region.
  4. Find a scaling group and go to the details page of the scaling group. You can use one of the following methods to go to the details page:
    • Click the ID of the scaling group in the Scaling Group Name/ID column.
    • Click Details in the Actions column of the scaling group.
  5. In the upper part of the page that appears, click the Scaling Group Monitoring tab.
  6. View the changes in the metrics of instances in the scaling group.

    In the following figure, CPU, Memory, and Load Metrics is used as an example.

    • You can click a monitoring dimension such as Average or Maximum in the upper part of the monitoring chart to hide or show relevant data in the chart.
    • You can click the Zoom in icon in the chart to zoom in the monitoring chart. You can also select a time range in the enlarged monitoring chart to view data of a specific time period.
    • If a monitoring chart has no data, no event-triggered tasks that correspond to the metric are created. Create an event-triggered task as prompted. For more information, see Create an event-triggered task.
    • The chart varies based on the metric that you select when you create an event-triggered task. For example, if you set Monitoring Metric to System Disk Read (Byte/s) or System Disk Write (Byte/s), you can view the chart of the System Disk Read/Write BPS (byte/s) metric in the System Disk Metrics section.
      Note The metrics that are available for the Monitoring Metric parameter in the Auto Scaling console shall prevail.