How to Grant access to the S3 bucket for the Snowflake account (example)

Snowflake

To grant access to an S3 bucket for a Snowflake account, you will need to create an AWS Identity and Access Management (IAM) policy and attach it to an IAM role. Here is an example of how to do this:

  1. Go to the AWS IAM console and create a new policy. You can use the “Create policy” button to create a new policy.
  2. In the policy editor, select “S3” as the service and “GetObject” as the action. You can also add other actions as per your requirement.
  3. In the “Resources” section, add the Amazon Resource Name (ARN) of the S3 bucket that you want to grant access to. The ARN for a bucket can be found in the S3 bucket’s properties in the AWS S3 console.
  4. Give a suitable name and description to the policy, and then create the policy.
  5. Next, create a new IAM role and attach the policy created in step 1 to it. You can use the “Create role” button to create a new role.
  6. Select “Snowflake” as the service and “Snowflake” as the use case.
  7. Attach the policy created in step 1 to the role.
  8. Give a suitable name and description to the role, and then create the role.
  9. Finally, in the Snowflake account, attach the IAM role created in step 5 to the Snowflake account. This can be done using the following SQL command:
ALTER ROLE <role-name> SET iam_role='arn:aws:iam::<account-id>:role/<role-name>';

This will grant the Snowflake account access to the S3 bucket specified in the IAM policy. Now, you can use the stage created earlier to load data from the S3 bucket into Snowflake.

It’s important to note that the IAM role should have the necessary permissions to access the S3 bucket, otherwise the Snowflake account will not be able to access the data. It’s also recommended to create a specific role for Snowflake with minimum permissions required to access the S3 bucket.

Here is an example of an AWS IAM policy that grants access to an S3 bucket for a Snowflake account:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:GetObject"
            ],
            "Resource": [
                "arn:aws:s3:::my-bucket/*"
            ]
        }
    ]
}

This policy allows the Snowflake account to perform the “s3:GetObject” action on all objects in the “my-bucket” S3 bucket. The “Resource” section specifies the ARN of the S3 bucket that you want to grant access to.

You can also add more actions to the policy if you want to grant more permissions to the Snowflake account. For example, if you want to allow the Snowflake account to list all the objects in the bucket, you can add the “s3:ListBucket” action to the policy.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:GetObject",
                "s3:ListBucket"
            ],
            "Resource": [
                "arn:aws:s3:::my-bucket/*"
            ]
        }
    ]
}

It’s important to note that, this policy is giving full access to the S3 bucket, for security reasons you should limit the access based on the requirements.

Author: user

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