Unable to copy elasticache for redis backup to S3 bucket in the same region

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Hi, I need to export a backup of Elasticache for redis to a S3 bucket which has the bucket policy according to the document at https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/backups-exporting.html. And my IAM has full access to the S3 resources.

When I use CLI command 'aws elasticache copy-snapshot --source-snapshot-name <source snapshot name> --target-snapshot-name <target snapshot name> --target-bucket <S3 bucket name>, I got some normal output data without error message. However, I don't see any files in the S3 bucket I created earlier. The same issue when I used the Elasticache console to copy the backup to the S3 bucket.

Here're some properties of the redis cluster:

  • Node type: cache.t2.micro
  • Engine version: 5.0.6
  • Cluster mode: off

Bucket policy: { "Version": "2012-10-17", "Statement": [ { "Sid": "ElastiCacheRedisBackupAccess", "Effect": "Allow", "Principal": { "Service": "ap-southeast-1.elasticache-snapshot.amazonaws.com" }, "Action": [ "s3:PutObject", "s3:GetObject", "s3:ListBucket", "s3:GetBucketAcl", "s3:ListMultipartUploadParts", "s3:ListBucketMultipartUploads" ], "Resource": [ "arn:aws:s3:::<S3 bucket name>", "arn:aws:s3:::<S3 bucket name>/*" ] } ] }

Any idea why I don't see the files in the S3 bucket? Thanks!

asked 2 years ago871 views
1 Answer
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Accepted Answer

Finally, after trying different configurations, it's working now. The trick is that you have to enable the ACL and add the grantee according to the 'Amazon ElastiCache for Redis user guide'. I thought AWS was trying to deprecate this method. Anyway, case closed.

answered 2 years ago

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