Fallback to default AWS credential chain #7952
Merged
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By setting the S3 Client credentials to undefined, the AWS SDK will fallback to a default credential chain, attempting to load credentials from the instance profile, .ini file, environment variables etc:
https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/setting-credentials-node.html
This allows users to follow AWS best practices by using temporary credentials:
https://docs.aws.amazon.com/general/latest/gr/aws-access-keys-best-practices.html
To achieve this, I've made the s3Storage.accessKeyId and s3Storage.secretAccessKey configuration items optional.