EC2 Elastic Cloud Compute

Question 1

Amazon EC2

Answer 1

• Infrastructure as a Service
• Core functions
  Rent VM (EC2)
  Store Data (EBS)
  Distribute load (ELB)
  Scale services (ASG)

Question 2

EC2 configuration options

Answer 2

• OS (Linux, Windows, or Mac)
• CPU
• RAM
• Network card
• Firewall rules (security group)
• Bootstarp script

Question 3

Bootstrapping

Answer 3

• Launching commands when the machine starts
• Run once

Question 4

EC2 User Data

Answer 4

Scripts to automate boot tasks
* Install updates and software
* Download common files from the internet
* Anything you can think of

Always run as the root user

Question 5

EC2 Instance Types

Answer 5

• General Purpose
• Compute Optimized
• Memory Optimized
• Storage Optimized
• HPC Optimized
• Accelerated Computing

Question 6

EC2 naming convention

Answer 6

m5.2xlarge
* M: Instance class
* 5: generation
* 2xlarge: size within the instance class

Question 7

EC2 Instance Type: General Purpose

Answer 7

• Great for diversity of workloads (like webserver or code repositories)
• Balance between:
  compute
  memory
  networking

Question 8

EC2 Instance Type: Compute Optimized

Answer 8

Tasks require high performance processors:
* Batch processing
* Media transcoding
* High performance web servers
* High performance computing (HPC)
* Scientific modeling & machine learning
* Dedicated gaming servers

Question 9

EC2 Instance Type: Memory Optimized

Answer 9

Fast performance, process large data sets in memory
* High performance, relational/non-relational databases
* Distributed web scale cache stores
* In-memory databases optimized for BI (business intelligence)
* Applications performing real-time processing of big unstructured data

Question 10

EC2 Instance Type: Storage Optimized

Answer 10

Storage-intensive tasks
High, sequential read-write access to large data sets on logical storage
* High frequency online transaction processing (OLTP) systems
* Relational & NoSQL databases
* Cahche for in-memory databases (like Redis)
* Data warehousing
* Distributed file systems

Question 11

Security Groups

(EC2)

Answer 11

Fundamental to network security
* Like firewall
* Only allow rules
* Reference by IP or security group
* Locked to region or VPC combo
* Inbound blocked by default
* Outbound allowed by default

Question 12

Security Groups Regulate:

(EC2)

Answer 12

• Ports & IP ranges - v4 & v6
• Inbound and outbound traffic
• Like a firewall

Question 13

SSH can remote to which OSs

Answer 13

• Mac
• Linux
• Win 10 or higher

Question 14

EC2 Instance Connect can remote to which OSs

Answer 14

Any

Question 14

Putty can remote to which OSs

Answer 14

• Any version of windows
• Uses SSH Protocol

Question 15

Security Group common issues

Answer 15

• If blocked instance will not see it
• App is not accessible (time out), it is a security group issue
• Connection refused error is app error or app not launched