AWS Lambda:The provided execution role does not have permissions to call DescribeNetworkInterfaces on EC2

Question

Today I have a new AWS Lambda question, and can\'t find anywhere in Google.

I new a Lambda function, there is no question. But when I input any code in this function[eg.

Answer 1

This is actually such a common issue.

You can resolve this by adding a custom Inline Policy to the Lambda execution role under the Permissions tab.

Just add this:

  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "ec2:DescribeNetworkInterfaces",
        "ec2:CreateNetworkInterface",
        "ec2:DeleteNetworkInterface",
        "ec2:DescribeInstances",
        "ec2:AttachNetworkInterface"
      ],
      "Resource": "*"
    }
  ]
}

There's a full tutorial with pictures here if you need more information or are confused: https://ao.gl/the-provided-execution-role-does-not-have-permissions-to-call-createnetworkinterface-on-ec2/