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  • 1. Amazon S3/EC2 Thomas Fankhänel, Dominik Hurtienne, Georg Wicherski Web Technologies – Prof. Dr. Ulrik Schroeder – WS 2010/11 The slides are licensed under a Creative Commons Attribution 3.0 License
  • 2. Overview
    • AWS (amazon web services) offers over
    • 20 different web services
    • The Amazon Cloud is one of the
    • largest clouds on the web
    • Founded in 2002
    • Amazon S3 (Amazon S imple S torage S ervice) is a scalable and fast way for data storage
    • Amazon EC2 (Amazon E lastic C omputing C loud) provides computing capacity
    • Trivia: Wikileaks used AWS to manage traffic spikes during the recent disclosures of secret data
    Web Technologies
  • 3. Amazon S3: Basics
    • Amazon account and a credit card is sufficient to use S3
    • Write, read, delete objects from 1 byte up to 5 terabytes
    • Objects can be stored in different regions
    • (US Standard, US West, EU, Asia Pacific)
    • Uses standards-based REST and SOAP interfaces
    Web Technologies
  • 4. Amazon S3: Features & Use Cases
    • Multipart Upload
    • Common use cases:
      • Storage and distribution
      • data analysis
      • periodic backups
    • Grant, restrict access to certain parties
    • Various download protocols (HTTP, BitTorrent, ...)
    Web Technologies
  • 5. Amazon S3: Basic Operations
    • Manually uploading a file by using the AWS Management Console
    Web Technologies
  • 6. Amazon S3: REST
    • Example Authentication Amazon S3 REST Request
    • The Authorization Header consists of:
    • The AWSAccessKeyID is a 20-character, alphanumeric string that uniquely identifies an AWS accout
    Web Technologies
  • 7. Amazon S3: Signature
    • Pseudo grammar for the construction of the Authorization Header
    • The SecretAccessKeyID is a 40-character string that should be known only by you and AWS
    Web Technologies
  • 8. Amazon S3: REST
    • E xample Object GET
    • Example Object PUT
    Web Technologies
  • 9. Amazon S3: REST
    • E xample Fetch Access Control
    • Example Delete
    • Using the alternate x-amz-date methode to specify the date
    Web Technologies
  • 10. Amazon S3: REST
    • E xample Upload
    • Using the x-amz methodes to add meta-data
    • x-amz‘s are automatically sorted
    Web Technologies
  • 11. Amazon S3: Pricing Web Technologies
  • 12. Amazon S3: Summary
    • Easy, reliable way to store data
    • Can handle traffic spikes
    • Highly scalable
    • Fast growing cloud
    Web Technologies
  • 13. Amazon EC2 (Elastic Compute Cloud) Web Technologies
  • 14. Amazon EC2: Why?
    • You ’ re doing business and you:
    • Expect high traffic on your website
    • Have some computational tasks to do (simulation, math problems, image rendering, video transcoding...)
    • Need to perform network load tests, application clustering
    • But:
    • You do not want to build up your own infrastructure (data centre, broadband internet...)
    • You need these services for a short period of time only
    • You need it right now!?
    Web Technologies
  • 15. Amazon EC2: Overview
    • Every EC2 instance is a (virtual) server:
      • Running your choice of operating systems (Windows Server 2003/2008, Solaris, Linux)
      • Full super-user access: install and run every software
    • As many instances as you need
    • Works in conjunction with S3
    • Appliances: community provided image templates or Amazon Machine Images (AMI)
    Web Technologies
  • 16. Amazon EC2: Additional features
    • VPC (Virtual Private Cloud) via VPN
    • CloudWatch web service to monitor EC2
    • Elastic Block Store: persistent system storage
    • High Performance Computing (HPC) Clusters
    • External load balancer
    • VM Import
    Web Technologies
  • 17. Amazon EC2: Limitations
    • No installation support
    • No help on specific applications
    • No automated backup
    • Prohibited: Spam, DOS, illegal file sharing … !
    Web Technologies
  • 18. Amazon EC2: Instance types and pricing Web Technologies
  • 19. Amazon EC2: Basic Operations
    • Demo of Management Console
    • Use EC2 instance to find a password hash (by bruteforce)
    Web Technologies
  • 20. Amazon EC2: Summary
    • Advantages
      • High virtual server performance
      • No hardware or connectivity issues
      • SLA: 99.95% (10% refund)
      • Just in time appliance deployment
      • Number of cpus and memory size adjustable to appl. N eeds
    • Disadvantages
      • Paravirtualization (XEN): Very fast but guest-system with compatible kernel is required
      • Security issues, sensible data?
    Web Technologies
  • 21. Literature - Introductio n
    • Books
    • Paper
    • Tutorials
    • Links
    • Examples
    • Software
    1 Introduction