Download a file from s3 to /tmp in lambda

Looking to download all the files in your S3 bucket? This is the article for you. If you already have the aws cli installed and configured, feel free to skip down to Step 2.

Share 0. Tweet 0. How to get contents of a text file from AWS s3 using a lambda function? Creating a lambda function in AWS from zip file. Download image from S3 bucket to Lambda temp folder Node. Welcome to Intellipaat Community. Nagarajan Shanmuganathan Nagarajan Shanmuganathan 4 4 silver badges 25 25 bronze badges. Add a comment. Active Oldest Votes. The problem might be that the sub-process can't find unzip. From Unzipping files in python : import zipfile with zipfile.

Improve this answer. John Rotenstein John Rotenstein k 17 17 gold badges silver badges bronze badges. Yes, I think the problem was with sub-process. Collectives on Stack Overflow. Learn more. Asked 2 days ago. Active yesterday. Viewed 24 times. Key, data. Improve this question. KMS encryption for S3 is pretty straightforward, and should be the default setting for all your production buckets.

But KMS encryption with multi-part upload is a slightly different beast, as it requires additional permissions, as can be gleaned from the boto3 documentation:. In the above, we grant the lambda s3:PutObject for the bucket, but also access to the KMS encryption key. The file is downloaded in chunks of 5MB the smallest chunk size possible , and multi-part uploaded to S3. The operation typically takes seconds to complete, and the final result is the 1.

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