Introduction to cloud computing

It is all about money

Clouds and clouds

What is the cloud?

NIST defines 5 characteristics

●on demand self-service●broad network access●resource pooling / multi-tenancy●rapid elasticity●measured service

http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf

Deployment models

●Private omay be on or off premise

●Community ono much different from private

●Public opublic does not mean free

●HybridoCloud Bursting

Most popular cloud applications

●Cloud storageoBackupoShareoTransform (images, music, video, documents)

●Web-applications for broad audienceoSome build their own cloudoSome use existing ones

●Data mining / data warehouseoLog processing

●Scientific computations

Perspectives

Amazon Web Services

Core services

●Amazon Simple Storage ServiceS x S x S = S3

●Amazon Elastic Computing CloudE C C = EC2

Key components of the AWS ecosystem

Amazon S3 storage

●Unlimited (store as much data as you need)●Durable (99.999999999% durability)●Inexpensive (from $10/month for 100GB -

same as DropBox, to $1/month with Glacier)

Drawback:●Need to learn the concepts

o regions and bucketso3 storage modelsopricing model

Regions and availability zones

Amazon S3 storage

Bucket name appears as a domain name prefix

my-super-bucket http://my-super-bucket.s3.amazonaws.com/

●Name is limited to alphanum, dot and dash●It must be globally unique●Dash is better than dot

Amazon S3 storage

Storage models●Normal●Reduced redundancy (99.99%)●Glacier (3-5 hours before retrieve)

Pricing model●Storage (10¢ / 7.6¢ / 1¢ per GB)●Outbound traffic (12¢ per 1GB, first GB is

free)●Requests (1¢ per 10,000 GETs)

Amazon S3 storage

Very basic static website hosting●index.html support●error page support●redirects

CloudFront - content delivery network●SSL termination●RTMP support for video

Amazon EC2

Your virtual machine in a cloudSupported OS:

●Linux (all flavours)●Windows Server (2003, 2008, 2012)

Unsupported, but known to work:●FreeBSD●OpenSolaris

Amazon EC2One EC2 Compute Unit (ECU) provides the equivalent CPU capacity of a 1.0-1.2 GHz 2007 Xeon processor.

Hardware configurations● starting from "micro": 613MB RAM, 1 cores of 2 ECU

(tamed!)● to "High-Memory Quadruple Extra Large": 68GB RAM,

8 cores x 3.25 ECU each● and even more... (cluster / GPU / High I/O)

Amazon EC2

Concepts●Amazon Machine Image - AMI●Local (temporary) storage●Elastic Block Storage - EBS●Security groups●ssh keys / Administrator password●Elastic IP Address

Amazon EC2

Clustering●Elastic Load Balancer (ELB)

oMulti-zoneoSSL termination supportoTCP port limitation

●Autoscale optionoCloudWatch metricsoScale up and down

●Route53 DNS ServiceoLatency based routing

Amazon EC2

Pricing model● Running time (from 2¢/hour for "micro" to $2 - $3 /

hour for super-duper box)● EBS● Licenses (AWS Marketplace)● Reserved instances - pay ahead

oUtilization (light/medium/heavy)oEconomy is about 40%

● Spot instances (and Spot market)

Stop your instances when you don't need them!

Instance-based services

●Amazon RDS - RDBMS managed instancesoMySQLoOracle (Standard Edition)oMicrosoft SQL Server (Express / Web / Standard)

●ElasticCache (memcached)●Elastic MapReduce (Hadoop)●CloudSearch (Solr-based??)

Cost is "per instance". The added value is for free.

Cloud-application services

●Simple Queue Service●Simple Notification Service●Simple Email Service●DynamoDB / SimpleDB

Benefits:●Automatical provisioning●Scaling●Reliability

Elastic BeansTalk

An attempt to provide PaaS

●MultiplatformoJava - Tomcato .NET - IIS 7.5oPHP/Python/Ruby - Apache HTTP plugin

●Automatically provisioned and managedoBalanceroAuto-scale

Amazon cloud for your network

Virtual Private Cloud● VPN to your network

o Multipath if BGP is used● Your IP network subnets● Several connectivity

options:o Public subnetso Private subnetso Private subnets with NATo 2 network interfaces

Amazon cloud for your network

Storage Gateway - seamless data replication

Tools

Provided and supported by Amazon:● AWS Console● Command-line tools (for scripting)● API Libraries

Third-party:● Browser plugins (ElasticFox, S3Fox, SDBTool, ...)● API and command-line tools (s3cmd, boto, ...)● Third-party web-applications (Ylastic)● S3 is supported by some FTP software

Amazon cloud Use Cases

http://aws.amazon.com/solutions/case-studies/

Questions?