Cloud Computing

By Anuradha NamalGUI SOLUTIONS

What is cloud?

• A "cloud" is a set of machines and web services that implement cloud computing.

• User is allowed to use the services regardless physical location and organization of the equipment hosting the resources.

• Runs on a VM(s) over a single/multiple Hypervisor

Architecture Xen

Ref: http://vzxen.com/features

Cloud Service Styles

• Infrastructure as a Service (IaaS)– basic compute and storage resources (Amazon EC2,

VMWare vCloud)

• Platform as a Service (PaaS)– With PaaS, users develop and execute their own

applications within an environment offered by the service provider. (Azure, Amazon, Salesforce Etc.)

• Software as a Service (SaaS)– Access The software as a service (Gmail, Microsoft Office

Web Companions)

Windows Azure• Compute: runs applications in the cloud. Those applications largely

see a Windows Server environment, although the Windows Azure programming model isn’t exactly the same as the on- premises Windows Server model.

• Storage: stores binary and structured data in the cloud (database)• Fabric Controller: deploys, manages, and monitors applications. The

fabric controller also handles updates to system software throughout the platform.

• Content Delivery Network (CDN): speeds up global access to binary data in Windows Azure storage by maintaining cached copies of that data around the world.

• Connect: allows creating IP-level connections between on-premises computers and Windows Azure applications.

Azure Service Model

• There are currently three role types:– Web Role: IIS7 and ASP.NET in Windows Azure-supplied OS– Worker Role: arbitrary code in Windows Azure-supplied OS– VM Role: uploaded VHD with customer-supplied OS

i.e.: Roles can be increased or decreased based on data volume and user requirement.

Roles And Instances

• A Role can have more than Once instance• A instance is a state of the object, which can

be increased decreased on demand• Best practice to device the roles in to worker

roles and web roles.• Why?

Creating a new Cloud Application

• Open visual studio 2010 and click new project.• Give a proper name to the project and click Ok.

Creating a new Cloud Application

• Add the necessary web roles and the worker/WCF roles to the application.

• Change the role names to appropriate names

Creating a new Cloud Application

• Final application as follows. Please note there are 2 roles in the application shown in the Roles folder.

Deploying to Azure

• You may choose the 90 day trial from the windowsazure site.

• Once account created, You can get the Ip, Dsn Etc from the console site

• Deploy the application from your VS2010 or console

Database Tools

• SQL Azure Migration Wizard v3.8.9 & v4.0.2• SQL Azure Migration Wizard (SQLAzureMW) is

designed to help you migrate your SQL Server 2005/2008/2012 databases to SQL Azure.

• SQLAzureMW will analyse your source database for compatibility issues and allow you to fully or partially migrate your database schema and data to SQL Azure.

Deploying existing App to Azure

• Right-click on the Web Application project and select “Unload project”

• Create a new blank Cloud Service• Add the un loaded solution by right clicking on

the solution and selection Add –> Existing Project

• Write click roles -> add-> Web role In project Solution

• Done!

Thank you. Questions?

References:

1. “Security Best Practices For Developing Windows Azure Applications” 2011, http://www.windowsazure.com/en-us/develop/net/other-resources/white-papers. Viewed on 10-05-2012.

2. “Windows Azure Security Overview”, 2011, http://www.windowsazure.com/en-us/develop/net/other-resources/white-papers. Viewed on 14-04-2012.

3. “Windows Azure Table - Programming Table Storage” , http://www.windowsazure.com/en-us/develop/net/other-resources/white-papers. Viewed on 13-04-2012.

4. “The Windows Azure Programming Model”,2011, http://www.windowsazure.com/en-us/develop/net/other-resources/white-papers. Viewed on 04-04-2012.

5. http://www.windowsazure.com

6. http://youtube.com.

7. MSDNAA.