Unable to copy Elasticache for redis backup

Question

I have followed those instructions step by step: https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/backups-exporting.html

However I have the following error:

```
An error occurred (InvalidParameterValue) when calling the CopySnapshot operation: Elasticache was unable to validate the authenticated user has access on the S3 bucket ...
```

The bucket is in the same region of the backup.

This is my bucket configuration:

```
{
    "LocationConstraint": "eu-central-1"
}

```

```
{
    "Version": "2012-10-17",
    "Id": "xxxxxxxx",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Service": "eu-central-1.elasticache-snapshot.amazonaws.com"
            },
            "Action": [
                "s3:PutObject",
                "s3:GetObject",
                "s3:ListBucket",
                "s3:GetBucketAcl",
                "s3:ListMultipartUploadParts",
                "s3:ListBucketMultipartUploads"
            ],
            "Resource": [
                "arn:aws:s3:::my-bucket-name/*",
                "arn:aws:s3:::my-bucket-name"
            ]
        }
    ]
}

```

This is the snapshot

```
{
    "Snapshots": [
        {
            "SnapshotName": "my-snapshot-name",
            "CacheClusterId": "xxxxxxxx-xxx",
            "SnapshotStatus": "available",
            "SnapshotSource": "manual",
            "CacheNodeType": "cache.t2.micro",
            "Engine": "redis",
            "EngineVersion": "5.0.3",
            "NumCacheNodes": 1,
            "PreferredAvailabilityZone": "eu-central-1c",
            "CacheClusterCreateTime": "xxxxxxx",
            "PreferredMaintenanceWindow": "mon:02:30-mon:03:30",
            "Port": 6379,
            "CacheParameterGroupName": "default.redis5.0",
            "CacheSubnetGroupName": "internal",
            "VpcId": "xxxxx",
            "AutoMinorVersionUpgrade": true,
            "SnapshotRetentionLimit": 7,
            "SnapshotWindow": "00:00-02:00",
            "NodeSnapshots": [
                {
                    "CacheNodeId": "0001",
                    "CacheSize": "33 MB",
                    "CacheNodeCreateTime": "xxxxxx",
                    "SnapshotCreateTime": "xxxxxx"
                }
            ],
            "ARN": "arn:aws:elasticache:eu-central-1:000000000:snapshot:my-snapshot-name",
            "DataTiering": "disabled"
        }
    ]
}

```

Answer

Hi AWS-User-7081016,

Just thought of checking if the step 3(Step 3: Export an ElastiCache backup) of the documentation is adhered. AWS expects the user who performs the operation to have the below permission. I'm assuming you have the below set of permission to your IAM user through which the export operation is attempted.

```
{
	"Version": "2012-10-17",
	"Statement": [{
		"Effect": "Allow",
		"Action": [
			"s3:GetBucketLocation",
			"s3:ListAllMyBuckets",
			"s3:PutObject",
			"s3:GetObject",
			"s3:DeleteObject",
			"s3:ListBucket"
		],
		"Resource": "arn:aws:s3:::*"
	}]
}

```

Answer

Have you tried to enable the ACL to grant Elasticache access right according to the documentation?

Unable to copy Elasticache for redis backup

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