Monitor an EFA

You can use the following features to monitor the performance of your Elastic Fabric Adapters.

Amazon VPC flow logs

You can create an Amazon VPC Flow Log to capture information about the traffic going to and from an EFA. Flow log data can be published to Amazon CloudWatch Logs and Amazon S3. After you create a flow log, you can retrieve and view its data in the chosen destination. For more information, see VPC Flow Logs in the Amazon VPC User Guide.

You create a flow log for an EFA in the same way that you create a flow log for an elastic network interface. For more information, see Create a flow log in the Amazon VPC User Guide.

In the flow log entries, EFA traffic is identified by the srcAddress and destAddress, which are both formatted as MAC addresses, as shown in the following example.

version accountId  eniId        srcAddress        destAddress       sourcePort destPort protocol packets bytes start      end        action log-status
2       3794735123 eni-10000001 01:23:45:67:89:ab 05:23:45:67:89:ab -          -        -        9       5689  1521232534 1524512343 ACCEPT OK

Amazon CloudWatch

Amazon CloudWatch provides metrics that enable you to monitor your EFAs in real time. You can collect and track metrics, create customized dashboards, and set alarms that notify you or take actions when a specified metric reaches a threshold that you specify. For more information, see Monitor your instances using CloudWatch.