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AWS Elastic Cloud Computing

EC2

EC2 is used to create virtual machines.

EC2 Instance types

  • General Purpose: Well balanced.
  • Compute Optimized: CPU focused machines.
  • Memory Optimized: RAM focused machines.
  • Storage Optimized: IO focused machines.

EC2 Security Groups

A group of instances that share the same firewall rules.
A security group is a firewall.

EC2 Instance Connect

Online SSH access to an instance.

EC2 Instance Store

Real hardware drives attached to an instance for IO performance.
Risk of data loss if hardware fails. They lose their storage if the instance is stopped.

EBS: Elastic Block Storage

A "network" USB key. Should be in the same AZ.
Could be attached to only one instance. (In the exam)

EBS Snapshot

A snapshot of the EBS data.
Allow copy through AZ / Regions.

AMI: Amazon Machine Image

A customized EC2 instance. Likely a Docker Image.
You can get AMIs provided by AWS or in the Marketplace or build your own images.
They are built for a specific region.

EC2 Image Builder

Automates the creation and management of EC2 machine images.
Provides pipelines for updating and testing images, ensuring they meet compliance standards before deployment.

EFS: Elastic File System

A shared NFS that can be mounted to 100s of EC2 instances.
Only with Linux & Multi AZ.

EFS Infrequent Access (EFS-IA)

Storage class that is cost optimized for files not accessed every day.
You can make a Lifecycle policy.

FSx

  • FSx for Lustre: HPC on Linux. High-performance I/O.
  • FSx for Windows File Server: NFS for Windows. Supports SMB and NTFS.

Shared responsibility model

  • AWS: Infrastructure, Hardware, Vulnerability analysis, Compliance Validation, Isolation.
  • User: Internal security, Software, Permissions, OS management, Data.