ec2

IAAS
core/ foundational service
70% app running on ec2
VM 
Regional Service
Had to launched in VPC
=> Free tire limit  t2.micro 750hrs
=> Configuration
=> Instance are =CPU, Storage, Memory, Network
=> AMI => OS, Custome AMI

Xen
=> Virtualization type: hvm  | Para
Hardware vitural machine  |   Para
Fast                            Slow
New
support more hardwar              Old

=> Root Device 
EBS volume, ISVolume

EBS volume
=> Similar to hard disk
=> Presistent in nature
=> Upto 30GB is Free
=> EBS HDD & SDD(solid state disk)
=> AMI backuped by EBS volume
=> Stop, Run, Terminate & reboot

Instance Store volume (epnemeral volume)
=> Similar to RAM
=> Volatile in nature
=> Running, Terminate

Amazone => EBS+ HVM

ENA=> Network connectors

Hypervisior mange the resources


/************************
    Purchasing option
*************************/
On Demand Instance => Pay as yo go(/hr)
Reserved Instance  => For long term  (upto 75% for total)
                     > 1 yr to 3 yrs
                     > All upfront, Partial upfront, No upfront

Spot Instance      => Binding or auction
                   => 2 min and terminate my instance
                   => 90% cost benift
                   => Interruption can happen on biding price
                   => Testing , learning or 
                   => Duration(1hr to 6 hr)

/************************
    Tenancy
*************************/

Shared              => Multiple VM on same physical device
Dedicate instance   => Instance storage is Presistent and remain as backup
Dedicate Host        => Dedicated physical Machine for my VM



/************************
    Use linux as web server
*************************/
=> sudo su -
=> yum install httpd -y
=> cd /var/www/html
=> vi index.html
=> <h1>Hi welcome</h1>
=> press Ecs
=> :wq!
=> chmod 755 index.html
=> service httpd start
=> chkconfig httpd on
=> publicip/ index.html

<div style="background-color:red">
        <h1>Linux Machine</h1>
</div>

//node > 
https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/setting-up-node-on-ec2-instance.html

/************************
    Use Windows  as web server
*************************/
=> Install IIS
=> Install-WindowsFeature -name Web-Server -IncludeManagementTools
=> C:/inetpub/wwwroot/index.html
=> <h1>Hi welcome</h1>
=> publicip/ index.html



/************************
   Golden Image(Custome Image)  AMI
*************************/
=> Select Instance
    =>Action 
        =>Image
            =>Create Image
                => Name  & No Reboot

EC2 => Images => AMI (images list here)

Copy to other Region
=> Select Image 
    =>Action
        => Modify Image Perission
                |
    ------------------------
    |                       |
Public                  Add Aws User Account Number

/**********************
    Create volume
**************************/
Linux 
=> xvda
xen, virtual, disk , a is for first volume

=> Elastic Block Storage
=> Create Volume
    => AZ(create in same AZ as EC2)
        => Create Volume

/**********************
    Attach volume
**************************/
=> Select Volume
    => Actions
        => Attach volume
            => Select Instance
                =>Done

/**********************
    Snapshot Of EBS
**************************/
=> Select Volume
    => Action
        => create Snapshot
            => tag
                => Create

AMI in EBS
Volume in S3

/**********************
    Vertiacl Scale
**************************/
=> Select Instance
    => Stop Instance
        => Action   
            => Instance Setting
                => Change instance Type
                    => Select Type  
                        =>Apply

    
/**********************
    Placement Group
*******************/
Cluster is in single AZ on same physical server
Spreed in single AZ but different physical Server
=> Placement Group  
    => Create Placement Group
        => Name and Stargey

=> Logical grouping of instance
=> To improve through put and reduce latency
=> 10 Gib 
=> Heavy I/O should in once placement group

/**********************
    Change Key Pair
*******************/
=> Select Key pair tab
    => Create new key Pair 

    =>Select instance
        => Action
            => Instance Setting
                => View & change user data


/************************
    Elastic PUBLIC IP 
*************************/
> Elastic IPs
    > Allocate Elastic IP
        >Allocate

Security Group


//
Auto Scaling
Load Balancing
S3
DataBase


//VPC
//Route53
//Cloud Watch
//Cloud Trail

SNS 
SQS
SES
OpsWork
Well Arch

--------
Lamdba
CodePipeLine
Ecs 


Public
13.229.129.153
3.0.19.185

Private
172.31.25.163