Graph a Metric Across Resources
You can graph a metric across all resources to see everything on one graph. For example, you can graph the CPUUtilization metric for all Amazon EC2 instances on one graph.
To graph a metric across resources
Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs. For more information, see Regions and Endpoints.
In the navigation pane, click Metrics.
In the CloudWatch Metrics by Category pane, select a metric category. For example, under EC2 Metrics, select Per-Instance Metrics.
In the metric list, in the Metric Name column, click a metric. For example CPUUtilization.
At the top of the metric list, click Select All.
The graph shows all data for all occurrences of the selected metric. In the example below, CPUUtilization for all Amazon EC2 instances is shown.
To save this graph and access it later, in the details pane, under Actions, click Copy URL, and then in the Copy Graph URL dialog box, select the URL and paste it into your browser.