2. EC2 - Elastic Compute Cloud

Elastic Compute Cloud

• Scalability

• Have 2 Storage options EBS and Instance Storage

• Preconfigured Template

• 20 Instances per region

Types of EC2 Instances

1. General Purpose:- Balanced Memory & CPU

2. Compute Optimized -: More CPU than RAM

3. Memory Optimized -: More RAM

4. High Memory Optimized -: High RAM, Nitro System

5. Accelerated Computing /GPU-: Graphic Optimized, ex - PUBG

6. Storage Optimized -: Low latency

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Questions:-

• What is the Stand for EC2?

• what is EC2?

• What is Scalability?

• In the EC2 instance have preconfigured templates available?

• How many instances can you launch in one region?

• What is Compute?

• How many Types of Instance?

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Type of Instances

Types of Instances:-

1. General Purpose

2. Compute Optimized

3. Memory Optimized

4. High Memory

5. Accelerated Computing

6. Storage Optimized

7. Previous generation

General-purpose instances:- Provide a balance of computing memory and networking resources and can be used for a variety of workloads.

A1- Instances

• Web server

• Containerized microservices

• Caching fleets

• Distributed data stores

T2 - Instances

• Generally for Development

• Very Cheap

• Baseline CPU performance

• 5 to 32 GB

M4 instance

• Nitro Hypervisor

• RAM 8 to 64 GB

• EBS Storage

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Questions:-

• What is a General Purpose instance?

• How many types of series in general purpose?

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Compute Optimized:- Ek Sath bahut sari process (Batch Process /Parrallel Processing )ko execute karne ke liya ham Cpmpute Optimized Instances ka use karte hain.

• High Performance Processor

• Cost Effective

• C - Series (c3,c4,c5)

• Good Speed

• Only EBS Storage

User Cases - High Performance, Webserver, Gaming, Video, Encoding

• C5 Support max 25 EBS Volumes

• C5 use Elastic network Adapter

• C5 uses new EC2 Hypervisor

ENA - for improving your network is used ENA.

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Questions:-

• What is compute optimized?

• What is batch processing?

• What is Parrallel processing?

• How many types of Series in compute optimized?

• How many EBS volume support -25 EBS volume?

• Which hypervisor use this - nitro hypervisor?

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Note -: where you need high memory instances so use this instances

Ex -	for using space monitoring

Designing for fast performance

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What is SOI?

• Use design for workload for hight and

• Sequential read and write access to very large data .

• At the same time are using upload and download

Types of Series

• Direct Attach Storage - which storage attach with your system is called direct attach storage.

• Network Attach Storage - EBS , Jo kahi or rakhi hoti hain or hamare system ke sath attach hoti hai .

• Nitro System - A kind of hypervisor.

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• Using for live processing

• Live streaming

• FPGA use in real time processing like you are recording video

• Series (PGF)

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• High memory performance

• This is only work on Dedicated host

• Purchasing only for 3 year

• Os installed directly on hardware

• Baremetal instance - os seedha hardware me install hoga

• This is U series

• 448 logical processor

Baremetal - hardware me os installed hota hai

Elastic IP = Static Ip

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• Can we purchase right now - yes

• When your billing start - start from rebooting

• Pay per second option are available only linux and ubuntu not in windows server

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EC2 Instance Purchasing Options

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EC2 Instance :- Few important point

EC2 Access

• To access instances, you need a key and key pair name

• You can download the private key only once

• The public key is saved by AWS to match it to the key pair name and private key when you try to login to the EC2 instances

• Without key pair you cannot access instances via RDP or SSH

• 20instances per region

EC2 Status Check

• By Default AWS EC2 service performs automated status checks every one minute.

• EC2 services can send its metric data to aws CloudWatch Every 5 minute (Enable By Default)

• There is no charged if instances will be stop.

Two Type of Storage

EBS backed EC2 instance - Network Attached storage	It means Jiska Root volume  EBS hai - At where your os is installed
Instance Store Backed EC2 instance - Direct Attached Storage	It means Jiska Root Volume EC2 instance hai - At where your os is installed

When you Stop an EBS Backed EC2 Instance

• Instance perform a shutdown

• State changes from running --> stopping

• EBS volume remain attached to the instance

• Any data cached in RAM or instances store volume

EC2 Termination

• When you terminate a running instances the instance states changes as follow -

  • Running ---> Shutting down ---> Terminated

• During the shutting down and terminated states, you do not changes

• By default EBS root devices volumes are deleted automatically when the EC2 instances are terminated

• if you untic the termination policy so volume will not be terminated ---> termination proteciton

EC2 Metadata - Information of instances is called is metadata

• Ex - IP

• Metadata is not protected by encryption

• You can check metadata of instances - http://169.254.169.254/latest/meta-data/

Diff b/w Elastic Block Storage /Instance Storage

EBS	Instances Storage
Most common, replicate with A-Z	Physically attach to the host server
If detached EBS  from instances so it is not  affect to ec2	Data not lost when os is rebooted
Network attach storage (NAS)	Direct Attach Storage (DAS)
it is not	Faster
You can DE attach the EBS	You cannot DE attach the Instance Storage