How to change permission recursively to folder with AWS s3 or AWS s3api

问题

I am trying to grant permissions to an existing account in s3.

The bucket is owned by the account, but the data was copied from another account's bucket.

When I try to grant permissions with the command:

aws s3api put-object-acl --bucket <bucket_name> --key <folder_name> --profile <original_account_profile> --grant-full-control emailaddress=<destination_account_email>

I receive the error:

An error occurred (NoSuchKey) when calling the PutObjectAcl operation: The specified key does not exist.

while if I do it on a single file the command is successful.

How can I make it work for a full folder?

回答1:

You will need to run the command individually for every object.

You might be able to short-cut the process by using:

aws s3 cp --acl bucket-owner-full-control --metadata Key=Value --profile <original_account_profile> s3://bucket/path s3://bucket/path

That is, you copy the files to themselves, but with the added ACL that grants permissions to the bucket owner.

If you have sub-directories, then add --recursive.

回答2:

This can be only be achieved with using pipes. Try -

aws s3 ls s3://bucket/path/ --recursive | awk '{cmd="aws s3api put-object-acl --acl bucket-owner-full-control --bucket bucket --key "$4; system(cmd)}'

回答3:

use python to set up the permissions recursively

#!/usr/bin/env python
import boto3
import sys

client = boto3.client('s3')
BUCKET='enter-bucket-name'

def process_s3_objects(prefix):
    """Get a list of all keys in an S3 bucket."""
    kwargs = {'Bucket': BUCKET, 'Prefix': prefix}
    failures = []
    while_true = True
    while while_true:
      resp = client.list_objects_v2(**kwargs)
      for obj in resp['Contents']:
        try:
            print(obj['Key'])
            set_acl(obj['Key'])
            kwargs['ContinuationToken'] = resp['NextContinuationToken']
        except KeyError:
            while_true = False
        except Exception:
            failures.append(obj["Key"])
            continue

    print "failures :", failures

def set_acl(key):
  client.put_object_acl(     
    GrantFullControl="id=%s" % get_account_canonical_id,
    Bucket=BUCKET,
    Key=key
)

def get_account_canonical_id():
  return client.list_buckets()["Owner"]["ID"]


process_s3_objects(sys.argv[1])

回答4:

This was my powershell only solution.

aws s3 ls s3://BUCKET/ --recursive | %{ "aws s3api put-object-acl --bucket BUCKET --key "+$_.ToString().substring(30)+" --acl bucket-owner-full-control" }

回答5:

The python code is more efficient this way, otherwise it takes a lot longer.

import boto3
import sys

client = boto3.client('s3')
BUCKET='mybucket'

def process_s3_objects(prefix):
    """Get a list of all keys in an S3 bucket."""
    kwargs = {'Bucket': BUCKET, 'Prefix': prefix}
    failures = []
    while_true = True
    while while_true:
      resp = client.list_objects_v2(**kwargs)
      for obj in resp['Contents']:
        try:
            set_acl(obj['Key'])
        except KeyError:
            while_true = False
        except Exception:
            failures.append(obj["Key"])
            continue
      kwargs['ContinuationToken'] = resp['NextContinuationToken']
    print ("failures :"+ failures)

def set_acl(key):
  print(key)
  client.put_object_acl(
    ACL='bucket-owner-full-control',
    Bucket=BUCKET,
    Key=key
)

def get_account_canonical_id():
  return client.list_buckets()["Owner"]["ID"]


process_s3_objects(sys.argv[1])

来源：https://stackoverflow.com/questions/46572744/how-to-change-permission-recursively-to-folder-with-aws-s3-or-aws-s3api

标签

amazon-web-services

amazon-s3