> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ale.run/llms.txt
> Use this file to discover all available pages before exploring further.

# Prerequisites

> Prerequisites for installing ale on AWS EC2.

## Create VPC

<Frame>
  <img className="block rounded-md" src="https://files.cloudtype.io/ale-docs/setup/ec2/images/01_01.png" />
</Frame>

> Click `Create VPC` in the VPC dashboard.

<Frame>
  <img className="block rounded-md" src="https://files.cloudtype.io/ale-docs/setup/ec2/images/01_02.png" />
</Frame>

> Configure the VPC settings as follows and click `Create VPC`.

* Resources to create: VPC and more
* Name tag auto-generation
  * Auto-generate: Enable
  * Name tag: VPC resource prefix
* IPv4 CIDR block: VPC address range
* Tenency: Default
* Number of Availability Zones: Select 2 or more
* Number of public subnets: Same as AZ
* Number of private subnets: Same as AZ
* NAT Gateway: None
* DNS options
  * Enable DNS hostnames: Enable
  * Enable DNS resolution: Enable

## Create EC2 Key Pair

<Frame>
  <img className="block rounded-md" src="https://files.cloudtype.io/ale-docs/setup/ec2/images/01_03.png" />
</Frame>

> Go to `EC2 > Network & Security > Key Pairs`, click `Create key pair`, then enter or select the key pair information as follows to create the key:

* Name: Key pair name
* Key pair type: Select key pair type
  * RSA
  * ED25519
* Private key file format
  * `.pem`: OpenSSH
  * `.ppk`: PuTTY

<Info>
  When the key pair is successfully created, the key file will automatically download to your local machine.
  Keep this file in a secure location and ensure it's not exposed to others or the public.
</Info>

## Allocate AWS Elastic IP

<Frame>
  <img className="block rounded-md" src="https://files.cloudtype.io/ale-docs/setup/ec2/images/01_04.png" />
</Frame>

> Go to `EC2 > Network & Security > Elastic IPs`, click `Allocate Elastic IP address`, then select the following options and click `Allocate`:

* Public IPv4 address pool: Amazon's pool of IPv4 addresses
* Network border group: Region