# Setting up Amazon FSx for Lustre
Before you use Amazon FSx for Lustre 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 file system 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 FSx for Lustre checks for access to linked S3 buckets](#fsx-lustre-permissions-s3-bucket)
+ [Next step](#setting-up-next-step)
## Sign up for Amazon Web Services
To set up for Amazon, complete the following tasks:
1. [Sign up for an Amazon Web Services account](#sign-up-for-aws)
1. [Secure IAM users](#secure-an-admin)
### Sign up for an Amazon Web Services account
If you do not have an Amazon Web Services account, use the following procedure to create one.
**To sign up for Amazon Web Services**
1. Open [http://www.amazonaws.cn/](http://www.amazonaws.cn/) and choose **Sign Up**.
1. Follow the on-screen instructions.
Amazon sends you a confirmation email after the sign-up process is complete. At any time, you can view your current account activity and manage your account by going to [http://www.amazonaws.cn/](http://www.amazonaws.cn/) and choosing **My Account**.
### Secure IAM users
After you sign up for an Amazon Web Services account, safeguard your administrative user by turning on multi-factor authentication (MFA). For instructions, see [Enable a virtual MFA device for an IAM user (console)](https://docs.amazonaws.cn/IAM/latest/UserGuide/id_credentials_mfa_enable_virtual.html#enable-virt-mfa-for-iam-user) in the *IAM User Guide*.
To give other users access to your Amazon Web Services account resources, create IAM users. To secure your IAM users, turn on MFA and only give the IAM users the permissions needed to perform their tasks.
For more information about creating and securing IAM users, see the following topics in the *IAM User Guide*:
+ [Creating an IAM user in your Amazon Web Services account](https://docs.amazonaws.cn//IAM/latest/UserGuide/id_users_create.html)
+ [Access management for Amazon resources](https://docs.amazonaws.cn/IAM/latest/UserGuide/access.html)
+ [Example IAM identity-based policies](https://docs.amazonaws.cn/IAM/latest/UserGuide/access_policies_examples.html)
## Adding permissions to use data repositories in Amazon S3
Amazon FSx for Lustre is deeply integrated with Amazon S3. This integration means that applications that access your FSx for Lustre file system can also seamlessly access the objects stored in your linked Amazon S3 bucket. For more information, see [Using data repositories with Amazon FSx for Lustre](fsx-data-repositories.md).
To use data repositories, you must first allow Amazon FSx for Lustre 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 Amazon Web Services Management Console and open the IAM console at [https://console.amazonaws.cn/iam/](https://console.amazonaws.cn/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 Amazon CLI. To view the service-linked role documentation for a service, see **Amazon 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-cn:iam::*:role/aws-service-role/s3.data-source.lustre.fsx.amazonaws.com/*"
}
}
```
------
After you create an inline policy, it is 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 FSx for Lustre checks for access to linked S3 buckets
If the IAM role that you use to create the FSx for Lustre file system does not have the `iam:AttachRolePolicy` and `iam:PutRolePolicy` permissions, then Amazon FSx checks whether it can update your S3 bucket policy. Amazon FSx can update your bucket policy if the `s3:PutBucketPolicy` permission is included in your IAM role to allow the Amazon FSx file system to import or export data to your S3 bucket. If allowed to modify the bucket policy, Amazon FSx 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 FSx can't modify the bucket policy, it then checks if the existing bucket policy grants Amazon FSx access to the bucket.
If all of these options fail, then the request to create the file system fails. The following diagram illustrates the checks that Amazon FSx follows when determining whether a file system can access the S3 bucket to which it will be linked.
![\[Progression of checks that Amazon FSx uses to determine if it will have permission to import or export data to the S3 bucket to which it will be linked.\]](http://docs.amazonaws.cn/en_us/fsx/latest/LustreGuide/images/fsx-lustre-permissons-create-fs-linked-s3.png)
## Next step
To get started using FSx for Lustre, see [Getting started with Amazon FSx for Lustre](getting-started.md) for instructions to create your Amazon FSx for Lustre resources.