Microsoft Cloud Computing

Topics to be covered 1.Environmental Features of windows azure 2.What is Cloud Computing 3.Roles in Cloud Computing 4.Benefits of Cloud Computing 5.Optimal Cloud workload Pattern 6.Service Delivery Models 7.Azure Architecture (Intro) 1..Net in Windows Azure 2.PHP in Windows Azure 3.JAVA and Tomcat in Windows Azure 8.Cloud Application Development and Hosting

Environmental Features of windows azure Compute – instance types: Web Role & Worker Role. Windows Azure applications are built with web role instances, worker role instances, or a combination of both. Each instance runs on its own VM (virtual machine), replicated as needed The Fabric Controller communicates with every server within the Fabric. It manages Windows Azure, monitors every application, decides where new applications should run – optimizing hardware utilization. Development, service hosting, & management environment. NET, Java PHP, Python, Ruby, native code (C/C++, Win32, etc.) ASP.NET providers, FastCGI, memcached, MySQL, Tomcat Full-trust – supports standard languages and APIs Secure certificate store Management API’s, and logging and diagnostics systems Multiple roles – Web, Worker, Virtual Machine (VHD) Multiple VM sizes 1.6 GHz CPU x64, 1.75GB RAM, 100Mbps network, 250GB volatile storage Small (1X), Medium (2X), Large (4X), X-Large (8X) In-place rolling upgrades, organized by upgrade domains Walk each upgrade domain one at a time Operating system as an online service; with automated provisioning and services management Maintenance OS Host VM Guest VM 1 Host VM Guest VM 3 Guest VM 2 Guest VM 1 Host VM

Cloud Computing Windows Azure compute provides developers a platform to host and manage applications in Microsoft’s data centers across the globe.

Cloud Computing A Windows Azure application is built from one or more components called ‘Roles.’ Roles come in three different types: 1.Web role, 2.Worker role 3.Virtual Machine (VM) role.

Roles in Cloud Computing Web Role - A Windows Azure Web role is used for hosting front-end web applications behind Internet Information Services (IIS). Worker Role - A Worker can run anything but is most commonly used to host background processing behind a web role. VM Role - A VM role is a special type of role that enables you to define the configuration and updates of the operating system for the virtual machine. While a web role and a worker role run in a virtual machine, the VM role is the virtual machine, which gives you full control of operations. When you have long and complicated installations in the operating system or special setup issues, you should use this role. This role is especially suited for migrating existing applications to run as hosted services in Windows Azure. This VHD is created using an on-premises Windows Server machine and then uploaded to Windows Azure. More on VM Windows Azure Web and Worker roles enable developers to deploy and manage applications services as a whole as opposed to individual Virtual Machines (VMs). It’s common for an application to interact with users through a Web role, then hand tasks off to a Worker role for processing.

.NET in Windows Azure Web Role and Worker Role Service Instance Worker RoleWeb Role Fabric Controller Load Balancer Table Storage Table Storage Blob Storage Blob Storage Queue Service Bus Service Bus Access Control SQL Database bind port(x) default.asp x IIS RoleEntry Point

Benefits of Cloud Computing A great application hosting environment A great application hosting environment Since the Windows Azure Web role is pre-configured with IIS7, it’s easy to create applications using ASP.NET, Windows Communication Foundation (WCF) or other web technologies. Developers can also create applications using languages such as PHP and Java. Presentation ASP.NET C#, WCF, PHP, Java Distributed in-memory cache Services.NET C#, Java, native code Distributed in-memory cache Asynchronous processes Distributed parallel processes Transient file storage

Benefits of Cloud computing Focus on the application, not the operational constraints Focus on the application, not the operational constraints The automated service management provided by Windows Azure offers customers the benefits of: Administration: Windows Azure automatically takes care of things such as load balancing and failover thereby reducing the effort and cost of administering the application environment. Availability: Windows Azure is designed to let developers build applications that are continuously available, even in the face of software upgrades and hardware failures. Scalability: Windows Azure enables developers to build scalable applications that run in Microsoft’s global data centers. It also allows developers to scale down applications when necessary, letting them use just the resources they need.

Optimal Cloud Workload Patterns Usage Compute Time Average Inactivity Period “On and Off ““On and Off “ Compute Time “Unpredictable Bursting““Unpredictable Bursting“ Average Usage Compute Time “Growing Fast““Growing Fast“ Compute Time Average Usage “Predictable Bursting““Predictable Bursting“

Benefits of Cloud computing Enable communication between role instances Enable communication between role instances The role instances in a hosted service communicate through internal and external connections that vary depending on the type of communication that is needed. Role instances can make these connections by using HTTP, HTTPS and Microsoft.NET APIs for TCP/IP sockets. An external connection is called an input endpoint, and an internal connection is called an internal endpoint. Endpoints are associated with ports, where the external endpoint is associated to a port that you define, and the internal endpoints are dynamically assigned ports by Windows Azure. Start tasks before role instances start Start tasks before role instances start You can use startup tasks to perform operations before the role instances start. Operations that you might want to perform include installing a component, registering COM components, setting registry keys, or starting a long running process. You add startup tasks to the role by defining the tasks in the ServiceDefinition.csdef file.

Benefits of Cloud computing Flexible instances sizes to meet your application needs Each Windows Azure compute instance represents a virtual server. Although many resources are dedicated to a particular instance, some resources associated to I/O performance are shared among the compute instances on the same physical host. Compute instance sizes with a high I/O performance indicator as noted in the table will have a larger allocation of the shared resources. Having a larger allocation of the shared resource will also result in more consistent I/O performance.

Benefits of Cloud Computing BUSINESS DEMANDS TECHOLOGY DEMANDS WINDOWS AZURE PLATFORM OFFERS Cost-effective solution to manage IT resources Less infrastructure to buy/configure and support Lower TCO Predictable cost Focus on delivering compelling software not on managing infrastructure Monetize new offering quickly without investment in billing and other enablement technologies. Speed of development Interoperability Leverage existing IP Simplified deployment Scale up or down as business needs change Go to market faster Reliable service SLAs Security Global data centers Lower costsEfficiency Stay Competitive Innovation Agility Generate New Revenue Quickly Reliability Reduced Risk

(On-Premise) Infrastructure (as a Service) Platform (as a Service) Service Delivery Models Storage Servers Networking O/S Middleware Virtualization Data Applications Runtime Storage Servers Networking O/S Middleware Virtualization Data Applications Runtime You manage Managed by vendor You manage Storage Servers Networking O/S Middleware Virtualization Applications Runtime Data Software (as a Service) Managed by vendor Storage Servers Networking O/S Middleware Virtualization Applications Runtime Data

Service Instance Web Role PHP in Windows Azure Fabric Controller Load Balancer Table Storage Table Storage Blob Storage Blob Storage Queue Service Bus Service Bus Access Control SQL Database bind port(x) index.php Web Role and IIS/FastCGI with Native Runtime php -cgi php -cgi IIS FastCGI

Service Instance Worker Role Java and Tomcat in Windows Azure RoleEntry Point Sub-Process JVM Tomcat server.xml Catalina Fabric Controller Load Balancer Table Storage Table Storage Blob Storage Blob Storage Queue Service Bus Service Bus Access Control SQL Database new Process() bind port(x) listen port(x) get runtime info index.jsp Worker Role and Sub-Process Invoking Native Code