aws lambda function getting access denied when getObject from s3

Question

I am getting an acccess denied error from S3 AWS service on my Lambda function.

This is the code:

// dependencies
var async = require(\'async\');
var         


        

Answer 1

I tried to execute a basic blueprint Python lambda function [example code] and I had the same issue. My execition role was lambda_basic_execution

I went to S3 > (my bucket name here) > permissions .

Because I'm beginner, I used the Policy Generator provided by Amazon rather than writing JSON myself: http://awspolicygen.s3.amazonaws.com/policygen.html my JSON looks like this:

{
    "Id": "Policy153536723xxxx",
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt153536722xxxx",
            "Action": [
                "s3:GetObject"
            ],
            "Effect": "Allow",
            "Resource": "arn:aws:s3:::tokabucket/*",
            "Principal": {
                "AWS": [
                    "arn:aws:iam::82557712xxxx:role/lambda_basic_execution"
                ]
            }
        }
    ]

And then the code executed nicely: