EFS metric for AccessPoints count

Hello,

I understand that you are exposed to hit hard limit of at most 1000 APs per EFS instance in case of massive processing and your question drives to get a metric for that AccessPoint count per EFS.

Have you ever thought about calling API DescribeAccessPoints ? By calling this API, you can count the number of AP provisioned. See this example below where I am using cloudshell to call API and count the number of AccessPoints (Names).

[cloudshell-user@ip-xx-xx-xx-xx ~]$ aws efs describe-access-points --query 'AccessPoints[*].Name' [ "RestrictedFinance" ]

Let me know if it brings insights to your solution.

The Amazon EFS service does not currently provide a specific metric to monitor the number of EFS Access Points created for a file system. However, you can use the following approach to monitor this - Use the AWS CLI or AWS SDK to list the EFS Access Points for a specific file system:

aws efs describe-access-points --file-system-id <file-system-id>

This will return a list of all the Access Points associated with the specified EFS file system. You can then track the number of Access Points and set up alarms or notifications if the count approaches a certain limit per file system.

Alternatively, you can use Amazon CloudWatch to create a custom metric that tracks the number of EFS Access Points. You can then set up alarms and notifications based on this custom metric. To create a custom CloudWatch metric, you can use the PutMetricData API or the AWS CLI. Here's an example using the AWS CLI:

aws cloudwatch put-metric-data --namespace "EFS" --metric-name "AccessPointCount" --value <access-point-count> --dimensions "FileSystemId=<file-system-id>"

You can then create a CloudWatch alarm to monitor the "AccessPointCount" metric and receive notifications when the count approaches the limit.

Thank you for information provided, setup with a scheduled Lambda execution that provides metric data is working just fine! Still, it would be great if it is provided as an out-of-the-box metric to avoid additional implementation efforts. Also, fetching the Access Points count is limited by a certain throttling rate on EFS API, so querying it too often for a custom metric might lead to unexpected issues.