Preparations for migrating data - Data Online Migration - Alibaba Cloud Documentation Center

This topic describes the operations that you must perform before you migrate data.

Step 1: Create a destination bucket

Create an Object Storage Service (OSS) bucket as the destination to store the migrated data. For more information, see Create buckets.

Step 2: Create a RAM user and grant permissions to the RAM user

Important

The Resource Access Management (RAM) user is used to perform the data migration task. You must create RAM roles and perform the data migration task as the RAM user. We recommend that you create the RAM user within the Alibaba Cloud account that owns the source or destination OSS bucket.
For more information, see Create a RAM user and grant permissions to the RAM user.

Log on to the RAM console with an Alibaba Cloud account. On the Users page, find the RAM user that you created and click Add Permissions in the Actions column.

System policy: Attach the AliyunOSSImportFullAccess policy to the RAM user.

Custom policy: Attach a custom policy that includes the ram:CreateRole, ram:CreatePolicy, ram:AttachPolicyToRole, and ram:ListRoles permissions to the RAM user.

For more information about how to attach a custom policy, see Create a custom policy. The following sample code provides an example of a custom policy:

{
    "Version":"1",
    "Statement":[
        {
            "Effect":"Allow",
            "Action":[
                "ram:CreateRole",
                "ram:CreatePolicy",
                "ram:AttachPolicyToRole",
                "ram:ListRoles"
            ],
            "Resource":"*"
        }
    ]
}