# Generating base instance

In this section, we will create a single EC2 instance that we will use as a template for the other two EC2 instances. This allows us to perform these tasks once and then have the output replicated to all the instances.

#### Create a Base Instance[​](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#create-a-base-instance) <a href="#create-a-base-instance" id="create-a-base-instance"></a>

Navigate to the **`Instances`** section on the Amazon EC2 console.

![base instance 01](https://docs.constellationnetwork.io/assets/images/base-intance-01-49a325ca0d7ac7f86fd9ebc64c9f13fd.png)

**Click on `Launch Instances`.**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#click-on-launch-instances)

Assign a name to your instance. For this guide, we will call it **`Metagraph base image`**.

**Choose an AMI**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#choose-an-ami)

In the **`Choose an Amazon Machine Image (AMI)`** section, select `Ubuntu` and then `Ubuntu server 20.04`. You should keep `64-bit (x86)`.

<figure><img src="https://docs.constellationnetwork.io/assets/images/base-intance-02-307116115eb0f444a4e882e1cacc5a39.png" alt="" width="563"><figcaption></figcaption></figure>

For the instance type, choose a model with **`4 vCPUs`** and **`16 GiB memory`**. In this case, we'll use the **`t2.xlarge`** instance type.

**Select a Key Pair**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#select-a-key-pair)

In the **`Configure Instance Details`** step, select the key pair you created earlier in the **`Key pair name`** field.

<figure><img src="https://docs.constellationnetwork.io/assets/images/base-intance-04-c0dea98ebcf98d83f6c091084f80ea80.png" alt=""><figcaption></figcaption></figure>

**Select Security Group**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#select-security-group)

In the `Network settings` section, you select the security group you created earlier.

<figure><img src="https://docs.constellationnetwork.io/assets/images/base-intance-05-8c2f23e35a5b8f83cb60273ec6e82169.png" alt="" width="563"><figcaption></figcaption></figure>

**Configure Storage**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#configure-storage)

In the `Configure storage` section, you specify the amount of storage for the instance. For this tutorial, we'll set it to **`160 GiB`**.

<figure><img src="https://docs.constellationnetwork.io/assets/images/base-intance-06-f5ba059a58d87a95fe58cfe35a97ad8d.png" alt="" width="563"><figcaption></figcaption></figure>

**Launch Instance**[**​**](https://docs.constellationnetwork.io/sdk/guides/deploy-a-metagraph/base-instance/generating-base-instance#launch-instance)

Finally, press `Launch instance`. Your base instance should now be running.

You can check the status of your instance in the **`Instances`** section of the Amazon EC2 console.

<figure><img src="https://docs.constellationnetwork.io/assets/images/base-intance-07-911a523035be0cca56de430e3f094d84.png" alt=""><figcaption></figcaption></figure>