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Cloud Computing Imranul Hoque. Today’s Cloud Computing.

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Presentation on theme: "Cloud Computing Imranul Hoque. Today’s Cloud Computing."— Presentation transcript:

1 Cloud Computing Imranul Hoque

2 Today’s Cloud Computing

3 This Talk What is cloud computing? Types of services What makes cloud computing popular? Case studies – Amazon Web Services – Eucalyptus

4 Examples A credit card company A researcher running scientific computing experiments A web-based book store A social network startup

5 Types of Service Infrastructure as a Service (IaaS) – Amazon EC2, Go-Grid, Eucalyptus, etc. Software as a Service (SaaS) – NetSuite (accounting), WorkDay (HR), etc. Platform as a Service (PaaS) – Google AppEngine, Coghead, etc.

6 Important Features The illusion of infinite computing resources available on demand The elimination of an up-front commitment by cloud users The ability to pay for use of computing resources on a short-term basis as needed Result: Convert capital expenditure to operational expenditure

7 Amazon Web Services Amazon Elastic Compute Cloud (EC2) Amazon Simple Queuing Service (SQS) Amazon Simple Storage Service (S3) Amazon Simple DB (SDB) Amazon Elastic Block Storage (EBS)

8 Amazon Simple Storage Service Programmatic access via web services API Highly scalable data storage in the cloud Simple to get going, simple to use Fast, highly available, and durable Economic: $0.15/GB-month 64 billion objects Notable users: SmugMug, Jungle Disk, Twitter, etc.

9 Amazon EC2 Resizable Compute Capacity – As much as you need, when you need it – Scale up or down in minutes Complete Control via API – Create, scale, and manage instances programmatically Variety of Instance Sizes – CPU Power, Cores, RAM, Disk Wide Variety of Pre-built AMIs (Amazon Machine Images) – Hit the ground running with minimal system building effort Secure and Flexible Network Security Model – Full control of access for each running instance

10 AWS: Interesting Facts The Washington Post – 200 EC2 instances (1,407 server hours), convert 17,481 pages of Hillary Clinton’s travel documents within 9 hours The New York Times – 100 Amazon EC2 instances + Hadoop to convert 4TB TIFF image into 1.1 million PDFs in 24 hours – 50 to 3500 servers in 3 days

11 Eucalyptus Open-source software infrastructure for cloud computing Interface compatible with EC2, S3, and EBS Get me 3 small Instances 11

12 Architecture Cloud Controller Cluster Controller Node Controller 12

13 Architecture (2) Node Controller – Runs VMs – Xen/KVM – Interfaces runInstance(), describeInstance(), terminateInstance(), describeResource(), startNetwork() Hardware Xen Dom0 OS DomU OS 13

14 Architecture (3) Cluster Controller – Access to both public and private network – Gather state information from NC – Schedule incoming VM execution request to NCs Cloud Controller – User visible entry point – Key management – S3-interface compatible file system (Walrus) – Global scheduling 14

15 Node Controller Xen Event Sequence Cloud Controller Cluster Controller 15 Node Controller Xen

16 Networking Modes System – Use system settings Static – Get IP from a mapping of Managed – Create a private network and get IP from that Managed No-VLAN – Same as Managed, but no isolation 16

17 Internal Cluster Configuration 17 cn120 cn121 cn122 cn123

18 Internal Cluster Configuration (2) 8 Machines: 1 CC/CLC, 7 NCs OS: CentOS 5.3 (NCs running Xen kernel) Eucalyptus version: 1.5.2 Hardware: HP DL160 (2 Quad Core + 16 GB RAM + 2 TB Disk) VM kernel: VM Image: – FC, CentOS, Ubuntu, Hadoop 18

19 Improvement Suggestions Fault tolerance of cloud and cluster controller – Avoid single point of failure Make Walrus distributed – Efficiency of access – Avoid single point of failure Auto-scaling for Eucalyptus – Possible metrics: network, cpu, etc. 19

20 Demo Admin interface – ec2-api-tools – Version 1.3-30349 Elasticfox – Modified for Eucalyptus Other – Boto, Typica, Jets3t, etc. 20

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