Migrating data from one bucket to another

Published on 14 September 2018

Identity and Access Management (IAM):

If you have activated IAM, you may need certain IAM permissions to carry out some actions described on this page. This means:

you are the Owner of the Scaleway Organization in which the actions will be carried out, or
you are an IAM user of the Organization, with a policy granting you the necessary permission sets

Requirements:

You have an account and are logged into the Scaleway console
You have configured your API keys
You have created an Object Storage bucket

Create a new bucket.

aws s3api create-bucket --bucket BUCKET-TARGET

Copy the objects between the S3 buckets.

Important:
If you have objects in the Scaleway Glacier storage class you must restore them before continuing.
```
aws s3 sync s3://BUCKET-SOURCE  s3://BUCKET-TARGET
```

Check that the content of the copied objects matches the content of the source ones.

aws s3 ls --recursive s3://BUCKET-SOURCE --summarize > bucket-contents-source.txt

aws s3 ls --recursive s3://BUCKET-TARGET --summarize > bucket-contents-target.txt

Compare objects that are in the source and target buckets by using the outputs that are saved to files in the AWS CLI directory. See the following example output:
```
aws s3 ls --recursive s3://DOC-EXAMPLE-BUCKET --summarize
```
Sample output:
```
2022-01-20 11:20:49      multiaz.png

  Total Objects: 1        Total Size: 18640
```
Update any existing applications or workloads so that they can use the target bucket name, and delete the source bucket.

Important:
Delete the old bucket once everything is copied to avoid additional charges. You can use the following command: aws s3 rb s3://$bucket-source --force