Get started with Amazon EC2 - Amazon Elastic Compute Cloud
Step 1: Launch an instanceStep 2: Connect to your instanceStep 3: Clean up your instanceNext steps

Get started with Amazon EC2

Use this tutorial to get started with Amazon Elastic Compute Cloud (Amazon EC2). You'll learn how to launch and connect to an EC2 instance. An instance is a virtual server in the AWS Cloud. With Amazon EC2, you can set up and configure the operating system and applications that run on your instance.

Overview

The following diagram shows the key components that you'll use in this tutorial:

  • An image – A template that contains the software to run on your instance, such as the operating system.

  • A key pair – A set of security credentials that you use to prove your identity when connecting to your instance. The public key is on your instance and the private key is on your computer.

  • A network – A virtual private cloud (VPC) is a virtual network dedicated to your AWS account. To help you get started quickly, your account comes with a default VPC in each AWS Region, and each default VPC has a default subnet in each Availability Zone.

  • A security group – Acts as a virtual firewall to control inbound and outbound traffic.

  • An EBS volume – We require a root volume for the image. You can optionally add data volumes.

An instance with a security group, key pair, and EBS root volume.
Cost for this tutorial

When you sign up for AWS, you can get started with Amazon EC2 using the AWS Free Tier. If you created your AWS account less than 12 months ago, and have not already exceeded the Free Tier benefits for Amazon EC2, it won't cost you anything to complete this tutorial, because we help you select options that are within the Free Tier benefits. Otherwise, you'll incur the standard Amazon EC2 usage fees from the time that you launch the instance until you terminate the instance (which is the final task of this tutorial), even if it remains idle.

For instructions to determine whether you are eligible for the Free Tier, see Track your Free Tier usage for Amazon EC2.

Step 1: Launch an instance

You can launch an EC2 instance using the AWS Management Console as described in the following procedure. This tutorial is intended to help you quickly launch your first instance within the Free Tier benefits, so it doesn't cover all possible options.

To launch an instance

  1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.

  2. In the navigation bar at the top of the screen, we display the current AWS Region — for example, Ohio. You can use the selected Region, or optionally select a Region that is closer to you.

  3. From the EC2 console dashboard, in the Launch instance pane, choose Launch instance.

  4. Under Name and tags, for Name, enter a descriptive name for your instance.

  5. Under Application and OS Images (Amazon Machine Image), do the following:

    1. Choose Quick Start, and then choose the operating system (OS) for your instance. For your first Linux instance, we recommend that you choose Amazon Linux.

    2. From Amazon Machine Image (AMI), select an AMI that is marked Free Tier eligible.

  6. Under Instance type, for Instance type, choose t2.micro, which is eligible for the Free Tier. In Regions where t2.micro is not available, t3.micro is eligible for the Free Tier.

  7. Under Key pair (login), for Key pair name, choose an existing key pair or choose Create new key pair to create your first key pair.

    Warning

    If you choose Proceed without a key pair (Not recommended), you won't be able to connect to your instance using the methods described in this tutorial.

  8. Under Network settings, notice that we selected your default VPC, selected the option to use the default subnet in an Availability Zone that we choose for you, and configured a security group with a rule that allows connections to your instance from anywhere. For your first instance, we recommend that you use the default settings. Otherwise, you can update your network settings as follows:

    • (Optional) To use a specific default subnet, choose Edit and then choose a subnet.

    • (Optional) To use a different VPC, choose Edit and then choose an existing VPC. If the VPC isn't configured for public internet access, you won't be able to connect to your instance.

    • (Optional) To restrict inbound connection traffic to a specific network, choose Custom instead of Anywhere, and enter the CIDR block for your network.

    • (Optional) To use a different security group, choose Select existing security group and choose an existing security group. If the security group does not have a rule that allows connection traffic from your network, you won't be able to connect to your instance. For a Linux instance, you must allow SSH traffic. For a Windows instance, you must allow RDP traffic.

  9. Under Configure storage, notice that we configured a root volume but no data volumes. This is sufficient for test purposes.

  10. Review a summary of your instance configuration in the Summary panel, and when you're ready, choose Launch instance.

  11. If the launch is successful, choose the ID of the instance from the Success notification to open the Instances page and monitor the status of the launch.

  12. Select the check box for the instance. The initial instance state is pending. After the instance starts, its state changes to running. Choose the Status and alarms tab. After your instance passes its status checks, it is ready to receive connection requests.

Step 2: Connect to your instance

The procedure that you use depends on the operating system of the instance. If you can't connect to your instance, see Troubleshoot connecting to your Linux instance for assistance.

You can connect to your Linux instance using any SSH client. If you are running Windows on your computer, open a terminal and run the ssh command to verify that you have an SSH client installed. If the command is not found, install OpenSSH for Windows.

To connect to your instance using SSH

  1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.

  2. In the navigation pane, choose Instances.

  3. Select the instance and then choose Connect.

  4. On the Connect to instance page, choose the SSH client tab.

  5. (Optional) If you created a key pair when you launched the instance and downloaded the private key (.pem file) to a computer running Linux or macOS, run the example chmod command to set the permissions for your private key.

  6. Copy the example SSH command. The following is an example, where key-pair-name.pem is the name of your private key file, ec2-user is the user name associated with the image, and the string after the @ symbol is the public DNS name of the instance.

    ssh -i key-pair-name.pem ec2-user@ec2-198-51-100-1.us-east-2.compute.amazonaws.com

  7. In a terminal window on your computer, run the ssh command that you saved in the previous step. If the private key file is not in the current directory, you must specify the fully-qualified path to the key file in this command.

    The following is an example response:

    The authenticity of host 'ec2-198-51-100-1.us-east-2.compute.amazonaws.com (198-51-100-1)' can't be established.
ECDSA key fingerprint is l4UB/neBad9tvkgJf1QZWxheQmR59WgrgzEimCG6kZY.
Are you sure you want to continue connecting (yes/no)?

  8. (Optional) Verify that the fingerprint in the security alert matches the instance fingerprint contained in the console output when you first start an instance. To get the console output, choose Actions, Monitor and troubleshoot, Get system log. If the fingerprints don't match, someone might be attempting a man-in-the-middle attack. If they match, continue to the next step.

  9. Enter yes.

    The following is an example response:

    Warning: Permanently added 'ec2-198-51-100-1.us-east-2.compute.amazonaws.com' (ECDSA) to the list of known hosts.

To connect to a Windows instance, you must retrieve the initial administrator password and use this password when you connect to your instance using Remote Desktop. It takes a few minutes after instance launch before this password is available.

The default username for the Administrator account depends on the language of the operating system (OS) contained in the AMI. To ascertain the correct username, identify the language of your AMI's OS, and then choose the corresponding username. For example, for an English OS, the username is Administrator, for a French OS it's Administrateur, and for a Portuguese OS it's Administrador. If a language version of the OS does not have a username in the same language, choose the username Administrator (Other). For more information, see Localized Names for Administrator Account in Windows in the Microsoft TechNet Wiki.

If you've joined your instance to a domain, you can connect to your instance using domain credentials you've defined in AWS Directory Service. On the Remote Desktop login screen, instead of using the local computer name and the generated password, use the fully-qualified user name for the administrator (for example, corp.example.com\Admin), and the password for this account.

If you receive an error while attempting to connect to your instance, see Remote Desktop can't connect to the remote computer.

To connect to your Windows instance using an RDP client

  1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.

  2. In the navigation pane, choose Instances.

  3. Select the instance and then choose Connect.

  4. On the Connect to instance page, choose the RDP client tab.

  5. For Username, choose the default username for the Administrator account. The username you choose must match the language of the operating system (OS) contained in the AMI that you used to launch your instance. If there is no username in the same language as your OS, choose Administrator (Other).

  6. Choose Get password.

  7. On the Get Windows password page, do the following:

    1. Choose Upload private key file and navigate to the private key (.pem) file that you specified when you launched the instance. Select the file and choose Open to copy the entire contents of the file to this window.

    2. Choose Decrypt password. The Get Windows password page closes, and the default administrator password for the instance appears under Password, replacing the Get password link shown previously.

    3. Copy the password and save it in a safe place. This password is required to connect to the instance.

  8. Choose Download remote desktop file. When you have finished downloading the file, choose Cancel to return to the Instances page. Navigate to your downloads directory, and open the RDP file.

  9. You might get a warning that the publisher of the remote connection is unknown. Choose Connect to continue to connect to your instance.

  10. The administrator account is chosen by default. Paste the password that you copied previously, and then choose OK.

  11. Due to the nature of self-signed certificates, you might get a warning that the security certificate could not be authenticated. Do one of the following:

    • If you trust the certificate, choose Yes to connect to your instance.

    • [Windows] Before you proceed, compare the thumbprint of the certificate with the value in the system log to confirm the identity of the remote computer. Choose View certificate and then choose Thumbprint from the Details tab. Compare this value to the value of RDPCERTIFICATE-THUMBPRINT in Actions, Monitor and troubleshoot, Get system log.

    • [Mac OS X] Before you proceed, compare the fingerprint of the certificate with the value in the system log to confirm the identity of the remote computer. Choose Show Certificate, expand Details, and choose SHA1 Fingerprints. Compare this value to the value of RDPCERTIFICATE-THUMBPRINT in Actions, Monitor and troubleshoot, Get system log.

Step 3: Clean up your instance

After you've finished with the instance that you created for this tutorial, you should clean up by terminating the instance. If you want to do more with this instance before you clean up, see Next steps.

Important

Terminating an instance effectively deletes it; you can't reconnect to an instance after you've terminated it.

If you launched an instance that is not within the AWS Free Tier, you'll stop incurring charges for that instance as soon as the instance status changes to shutting down or terminated. To keep your instance for later, but not incur charges, you can stop the instance now and then start it again later. For more information, see Stop and start Amazon EC2 instances.

To terminate your instance

  1. In the navigation pane, choose Instances. In the list of instances, select the instance.

  2. Choose Instance state, Terminate instance.

  3. Choose Terminate when prompted for confirmation.

    Amazon EC2 shuts down and terminates your instance. After your instance is terminated, it remains visible on the console for a short while, and then the entry is automatically deleted. You cannot remove the terminated instance from the console display yourself.

Next steps

After you start your instance, you might want to explore the following next steps: