Sync AWS S3 buckets across accounts

README.md

Sync AWS S3 buckets across accounts

Add the policy.json to the source bucket. Ensure the profile being used has s3:PutObject, s3:GetObject and s3:PutObjectAcl (AWS docs).

Execute:

$ aws s3 sync \
  s3://source \
  s3://target \
  [--acl public-read] \
  [--profile name]

policy.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::666:user/dr.evil"
            },
            "Action": [
                "s3:GetObject",
                "s3:PutObject"
            ],
            "Resource": "arn:aws:s3:::bucket/*"
        },
        {
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::666:user/dr.evil"
            },
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::bucket"
        }
    ]
}