Lambda

Mount an S3 file system inside an AWS Lambda function by attaching an access point and configuring file-system-configs. Lambda requires an access point — it cannot mount a file system by ID alone.

Complete Setup before starting here. The Lambda compute role (s3files-compute-role-lambda) must exist from IAM.

Caution

The Lambda function must run in the same VPC as the S3 Files mount targets, and the subnet must have a route to the mount targets on port 2049 TCP.

Access Point Create an S3 Files access point with a root directory and POSIX owner for Lambda.

Attach Create the Lambda function, configure VPC access, and attach the access point.

Verify Invoke the function and confirm /mnt/s3files contents appear in the response.