Gallery

2. Amazon Elastic Compute Clouds (EC2)

Amazon EC2

IP Addresses

Placement Groups

Elastic Network Interfaces

NAT Gateway vs NAT Instances

Instance Lifecycle

Billing and Provisioning Options

AWS Nitro System and Enclaves

Misc

Explore

Amazon EC2

Public and Private Subnets

Amazon Machine Images(AMIs)

Instance Types

Overview

Service Description: Amazon EC2 is a web service that provides resizable compute capacity in the AWS cloud.

Instances: Virtual servers launched on the AWS cloud are known as instances.

Amazon Machine Images (AMIs)

Definition: Preconfigured templates for EC2 instances.

Contents: Includes the operating system and any software packages needed to launch the instance.

Supported Operating Systems:

Amazon Linux

Ubuntu

Windows Server

MacOS

Red Hat Enterprise Linux

SUSE Linux Enterprise Server

Fedora

Debian

CentOS

Gentoo Linux

Oracle Linux

FreeBSD

EC2 Compute Units (ECUs): Provide a relative measure of the integer processing power of an EC2 instance.

Control and Access

Full Control: Users have root/admin access at the operating system layer.

Key Pairs:

Components: A public key stored by AWS and a private key file stored by the user.

Usage:

Windows AMIs: Private key file required to obtain the password for logging in.

Linux AMIs: Private key file used to securely SSH into the instance.

Metadata and User Data

User Data:

Purpose: Supplied by the user at instance launch, typically in the form of a script. It must be base64-encoded.

Limit: 16KB.

Availability: Not encrypted and accessible at

http://169.254.169.254/latest/user-data⁠

Instance Metadata:

Purpose: Data about the instance used for configuration or management.

Access: Available at

http://169.254.169.254/latest/meta-data/⁠

(trailing "/" required).

Usage Example: On Linux, use the curl command to view metadata: curl http://169.254.169.254/latest/meta-data/.

Query Tool: Instance Metadata Query tool for querying metadata without typing out the full URI.

⁠

Want to print your doc?
This is not the way.

Try clicking the ⋯ next to your doc name or using a keyboard shortcut (

CtrlP

) instead.