The IoT Academy_awstraining_part2_aws_ec2_iaas

An overview of AWS
 AWS is Amazon’s umbrelladescription of all of their web-based
technology services.
 Mainly infrastructure services:
◦ Amazon Elastic Compute Cloud (EC2)
◦ Amazon Simple Storage Service (S3)
◦ Amazon Simple Queue Service (SQS)
◦ Amazon CloudFront
◦ Amazon SimpleDB
 Amazon EC2 is hiring
◦ http://aws.amazon.com/ec2-jobs/

Amazon EC2
 EC2 provides web services API for provisioning, managing, and
deprovioning virtual servers inside amazon cloud.
 Applicationsanywhere on the Internet can launch a virtual server in the
amazon cloud with a single web services call (either REST or SOAP WS
call)
 Where is SOAP API? For example,http://docs.amazonwebservices.com/AmazonEC2/dg/2006-06-
26/using-soap-api.html

Storage
 Instance –store : disappearswith the instance (transient)
 Block storage: SAN-like,persists across time
 S3 is independentof an instance: for archival purposes: vault: store it now
and retrieve it at a later date
 Amazon: SimpleDB: Relational database better than MySQl or Oracle for
reliability.

Amazon Cloud-front
 Cloud-basedcontent distributing network enablesyou to place the
content at the edges of the network for rapid delivery.
 Place the contents in S3 and run the applicationfrom anywhere and the
content is moved to where the application is (to the edges).

S3
 Amazon web services API support the ability to:
 Find buckets and objects
 Discover their meta data
 Create new buckets
 Upload new objects
 Delete existing buckets and objects
 When manipulating the buckets you can optionally specify where they should
be stored.
 Use REST API preferably something that abstracts out even that: Jets3t; s3cmd
(command line)
 BitTorrent access to S3 is also available

Bucket Naming
 Flat namespace
 Names may contain only lowercase letters, numbers, periods,
underscores, and dashes, and must start with a number or letter
 Create your own namespace with your own bcukets

EC2 concepts
 See figure 2.1
 Instance: virtual server running a guest os of your choice
 AMI: Pristine image of your server so that you can launch any numberof
instance from this. Minimallymachine image will operating systems +
pre-installed tools.
 Elastic IP address: Not static not dynamic but elastic; an IP reserved for
your use; disappearsonce the server is terminated.

EC2 (contd.)
 Availability zone: Any two availability zones are guaranteed to share
any common points of failure ( US, EU, Asia/Pacific)
 Security group: define the firewall/security. Defines what can talk to
your instances. (Ex; http, and not sftp etc.)
 Snap shot: You can take snapshots of block volume (that can be
formatted etc) and is stored in S3 for later use or for rollback etc.
 What is the difference between instances and machine images?

How to access Ec2?
 AWS console http://console.aws.amazon.com
 The ElasticFox firefox plugin
 The amazon command line tool

Typical Use in an organization
 Maintain a library of AMIs for the business
 May contain legacy systems or company-specific systems
 Harden AMIs using such software as Bastille
 Launch instances for non-technical but domain experts to work
with.
 What will you provide them so that they can start working?
 Use S3 for archival storage and shared storage

What is Infrastructure as a Service ?
 A categoryof cloud services which providescapabilityto
provisionprocessing, storage, intra-cloudnetworkconnectivity
services, and otherfundamental computing resources of the
cloud infrastructure.
Source- [ITU –Cloud Focus Group]
Diagram Source: Wikipedia

Highlights of IaaS
 On demand computing resources
 Eliminate the need of far ahead planning
 No up-front commitment
 Start small and grow as required
 No contract, Only credit card!
 Pay for what you use
 No maintenance
 Measured service
 Scalability
 Reliability

What is EC2 ?
 Amazon Elastic Compute Cloud (EC2) is a web
service that provides resizeablecomputing capacity
that one uses to build and host different software
systems.
 Designed to make web-scalecomputing easier for
developers.
 A user can create, launch, and terminate server
instances as needed, paying by the hour for active
servers, hence the term "elastic".
 Provides scalable, pay as-you-go compute capacity
 Elastic - scales in both direction

EC2 Concepts  AMI & Instance
 Region & Zones
 Storage
 Networking and Security
 Monitoring
 Auto Scaling
 Load Balancer

Amazon Machine Images (AMI)
 Is an immutablerepresentation of a set of disks that contain an operating
system, userapplications and/or data.
 From an AMI, one can launch multiple instances,which are running copies
of the AMI.

AMI and Instance
 Amazon Machine Image (AMI) is a template for
software configuration (Operating System,
Application Server, and Applications)
 Instance is a AMI running on virtual servers in the
cloud
 Each instance type offers different compute and
memory facilities
Diagram Source: http://docs.aws.amazon.com

Region and Zones
 Amazon have data centers in different region across the globe
 An instance can be launched in different regions depending on the need.
 Closer to specific customer
 To meet legal or other requirements
 Each region has set of zones
 Zones are isolated from failure in other zones
 Inexpensive, low latency connectivity between zones in same region

Storage
 Amazon EC2 provides three typeof storageoption
 Amazon EBS
 Amazon S3
 Instance Storage
Diagram Source: http://docs.aws.amazon.com

Elastic Block Store(EBS) volume
 An EBS volume is a read/write disk that can be created by an AMI and mounted
by an instance.
 Volumes are suited for applications that require a database, a file system, or
access to raw block-level storage.

Amazon S3
 S3 = Simplestorage Service
 A SOA – Service Oriented Architecture which provides online storage
using web services.
 Allowsread, write and delete permissions on objects.
 Uses REST and SOAP protocols for messaging.

Amazon SimpleDB
 Amazon SimpleDB is a highly available, flexible,and
scalablenon-relational data store that offloadsthe
work of databaseadministration.
 Creates and manages multiplegeographically
distributed replicas of your data automaticallyto
enable high availabilityand data durability.
 The service charges you only for the resources
actuallyconsumed in storing your data and serving
your requests.

Networking and Security
 Instances can be launchedon one of the two platforms
 EC2-Classic
 EC2-VPC
 Each instance launched is assignedtwo addresses a privateaddress and a public IP address.
 A replacement instance has a different public IP address.
 Instance IP address is dynamic.
 new IP address is assigned every time instance is launched
 Amazon EC2 offers ElasticIP addresses (staticIP addresses) for dynamiccloud computing.
 Remap the Elastic IP to new instance to mask failure
 Separate pool for EC2-Classic and VPC
 Security Groups toaccess control to instance

Monitoring, Auto Scaling, and Load Balancing
 Monitor statistics of instances and EBS
 CloudWatch
 Automatically scales amazon EC2 capacity up and down based on rules
 Add and remove compute resource based on demand
 Suitable for businesses experiencing variability in usage
 Distribute incoming traffic across multiple instances
 Elastic Load Balancing

How to access EC2
 AWS Console
 http://console.aws.amazon.com
 Command Line Tools
 Programmatic Interface
 EC2 APIs
 AWS SDK

References
 Mobile cloud computing: Big Picture by M. Reza Rahimi
 http://aws.amazon.com/ec2,
http://docs.aws.amazon.com
 Amazon Elastic Compute Cloud – User Guide, API
Version 2011-02-28.
 Above the Clouds: A Berkeley View of Cloud Computing -
Michael Armbrust et.al 2009
 International telecommunication union – Focus Group
Cloud Technical Report

The IoT Academy_awstraining_part2_aws_ec2_iaas

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