# Setting up
<a name="setting-up"></a>

Before you use Amazon File Cache for the first time, complete the tasks in the [Sign up for Amazon Web Services](#setting-up-aws) section. To complete the [Getting started tutorial](getting-started.md), make sure the Amazon S3 bucket that you'll link to your cache has the permissions listed in [Adding permissions to use data repositories in Amazon S3](#fsx-adding-permissions-s3).

**Topics**
+ [Sign up for Amazon Web Services](#setting-up-aws)
+ [Adding permissions to use data repositories in Amazon S3](#fsx-adding-permissions-s3)
+ [How Amazon File Cache checks for access to linked S3 buckets](#fsx-lustre-permissions-s3-bucket)
+ [Next step](#setting-up-next-step)

## Sign up for Amazon Web Services
<a name="setting-up-aws"></a>

To set up for AWS, complete the following tasks:

1. [Sign up for an AWS account](#sign-up-for-aws)

1. 

### Sign up for an AWS account
<a name="sign-up-for-aws"></a>

To get started with AWS, you need an AWS account. For information about creating an AWS account, see [Getting started with an AWS account](https://docs.aws.amazon.com//accounts/latest/reference/getting-started.html) in the *AWS Account Management Reference Guide*.

## Adding permissions to use data repositories in Amazon S3
<a name="fsx-adding-permissions-s3"></a>

Amazon File Cache is deeply integrated with Amazon Simple Storage Service (Amazon S3). This integration means that applications that access your cache can also seamlessly access the objects stored in your linked Amazon S3 bucket. For more information, see [Using data repositories with Amazon File Cache](using-data-repositories.md).

To use data repositories, you must first allow Amazon File Cache certain IAM permissions in a role associated with the account for your administrator user.

**To embed an inline policy for a role using the console**

1. Sign in to the AWS Management Console and open the IAM console at [https://console.aws.amazon.com/iam/](https://console.aws.amazon.com/iam/).

1. In the navigation pane, choose **Roles**.

1. In the list, choose the name of the role to embed a policy in.

1. Choose the **Permissions** tab.

1. Scroll to the bottom of the page and choose **Add inline policy**.
**Note**  
You can't embed an inline policy in a service-linked role in IAM. Because the linked service defines whether you can modify the permissions of the role, you might be able to add additional policies from the service console, API, or AWS Command Line Interface (AWS CLI). To view the service-linked role documentation for a service, see **AWS Services That Work with IAM** and choose **Yes** in the **Service-Linked Role** column for your service. 

1. Choose **Creating Policies with the Visual Editor**.

1. Add the following permissions policy statement.

------
#### [ JSON ]

****  

   ```
   {
       "Version":"2012-10-17",		 	 	 
       "Statement": {
           "Effect": "Allow",
           "Action": [
               "iam:CreateServiceLinkedRole",
               "iam:AttachRolePolicy",
               "iam:PutRolePolicy"
           ],
           "Resource": "arn:aws:iam::*:role/aws-service-role/s3.data-source.lustre.fsx.amazonaws.com/*"
       }
   }
   ```

------

After you create an inline policy, it's automatically embedded in your role. For more information about service-linked roles, see [Using service-linked roles for Amazon FSx](using-service-linked-roles.md).

## How Amazon File Cache checks for access to linked S3 buckets
<a name="fsx-lustre-permissions-s3-bucket"></a>

If the IAM role that you used to create the Amazon File Cache resource doesn't have the `iam:AttachRolePolicy` and `iam:PutRolePolicy` permissions, Amazon File Cache checks whether it can update your S3 bucket policy. Amazon File Cache can update your bucket policy if the `s3:PutBucketPolicy` permission is included in your IAM role to allow the Amazon File Cache resource to import or export data to your S3 bucket. If allowed to modify the bucket policy, Amazon File Cache adds the following permissions to the bucket policy:
+ `s3:AbortMultipartUpload`
+ `s3:DeleteObject`
+ `s3:PutObject`
+ `s3:Get*`
+ `s3:List*`
+ `s3:PutBucketNotification`
+ `s3:PutBucketPolicy`
+ `s3:DeleteBucketPolicy`

If Amazon File Cache can't modify the bucket policy, it then checks if the existing bucket policy grants Amazon File Cache access to the bucket.

If all of these options fail, then the request to create the DRA to the S3 bucket fails. 

## Next step
<a name="setting-up-next-step"></a>

[Getting started with Amazon File Cache](getting-started.md)