Summer School Scale Cloud Across the Enterprise
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Transcript of Summer School Scale Cloud Across the Enterprise
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Scaling Cloud Across the Enterprise
Chris Haddad Vice President Technology Evangelism, WSO2
Asanka Abeysinghe
Director, Solutions Architecture
Follow me @cobiacomm Read more about PaaS at http://blog.cobia.net/cobiacomm
Try StratosLive https://stratoslive.wso2.com/
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Your Presenters Chris Haddad WSO2 Vice President Technology Evangelism Former Burton Group and Gartner research leader whose main role is to raise visibility, awareness, and knowledge of the Platform as Service, Service Oriented Architecture, and API Management Twitter @cobiacomm http://blog.cobia.net/cobiacomm Asanka
WSO2 Director, Solutions Architecture
Twitter @asankama
http://asanka.abeysinghe.org
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Scaling Cloud Across the Enterprise
• Where your cloud application strategy may encounter challenges
• When to migrate applications to the cloud
• How to scale your cloud strategy and cloud tactics across the organization.
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Application Development Challenges
• Long time and significant effort required to create application project environment(s)
• Complex integration required to extend core application capabilities and bridge consumers
• Difficult to enforce governance best practices and policies
• Time consuming, manual process to obtain project status, dependencies, and change impact
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Cloud Governance Challenges
• New data types and metadata
• Interface with new Cloud management infrastructure
• Resurgent focus on bridging silos and creating a hybrid solution requires extensibility
• Emerging specifications and practices requires customization and experimentation
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What is Platform as a Service?
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Cloud Characteristics and Architecture
Resource pooling
• Multi-tenancy
• Resource utilization
• Shared, virtual infrastructure
• Interoperability
On-demand
self-service
• Flexible workload assignment
• Standard service offerings
• Quick startup and automation
Rapid Elasticity
• Stateless services
• Rapid provisioning
• Flexible topology
• High Quality of Service
Measured service or pay per use
• Fine-grained metering
• Billing • Reporting
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Defining Cloud Boundaries • Distributed Topology
– Latency – Stateless, autonomous services – Instrumented, redundant, and expecting failure
• Efficient resource pooling – Consumption aware and multi-tenant – Automated, continuous
• Scale – Asynchronous, event driven callbacks – Parallelizable, workload decomposition, and idempotent
• On-demand self service – Personalization extensibility points – Fine grained, modular – Template driven
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Dev Ops Tooling Automated Governance
Service Level Management
Consumption based Funding
Platform as a Service Capabilities
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• Resource monitoring
• Resource management
• Performance management
• Traffic orchestration
• Metering
• Reporting
• Billing
• Service catalogue
• Service tiers
• Demand and capacity management
• Lifecycle management
• Infrastructure Authority integration
• Self service configuration
• Automated provisioning
• Policy configuration
• Process automation
Dev Ops Tooling
Automated Governance
Service Level Management
Consumption based Funding
Platform as a Service Capabilities
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PaaS Abstraction Levels
• Users, workspaces, transactions
• Services, channels, API
Component Services
• Application session, frameworks
• Application instance, .war files
• Installing application
Application Platform
• Command line interface, bash shell
• Machine size, JVM configuration
• Installing infrastructure
Hardware Infrastructure
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Resource Tier
Cloud Scale
Functional Role
Client Tier
Integration Services
Integration Services Resource Services
Functional Role
Presentation and Mashups
Functional Role
Functional code
Presentation Role
Presentation and Mashups
Presentation and Mashups
Resource Services
Private Applications
Public Cloud Services
Business Proces
Business Process
Business Process Business Process and
Business Rules
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Bridging Clouds Mobile
Application
Application Portfolio
Hybrid Platform Services
Presentation Services
Resources Services
Functional Services
Business Process and
Rules Services
Integration Services
Composite Application
Business Service Portfolio
Integration Services
Cloud API
Endpoint
Infrastructure as a Service (IaaS)
SaaS Application
Web application Endpoint
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Composing a Cloud Platform
Cloud Platform
Cloud Management
PaaS Manager
Cloud Governance
Identity Management
Asset Repositories and Registries(tenant code, service
endpoints, meta-data, configuration, policies)
Infrastructure as a Service (AWS, Eucalyptus, OpenStack,
CloudStack)
Platform as a Service Run-time Framework (i.e. WSO2 Stratos)
Service-aware, tenant-aware
Elastic Load Balancer
Stratos Controller
Asset/Code Deployer
Asset/Code Synchronizer
Metering and Billing
Cloud Native Container(s)
Application Platform Services (web server, database, ESB)
Tenant 1 Tenant (n)
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Composing a Cloud Platform
Load Balancer
Manager
Repository
Code Deployer
Platform Services
Metering and Billing
Controller
Cloud Application Platform Architecture
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Platform as a Service
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Cloud Application Platform Shared Middleware Services
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Platform as a Service Architecture What is a tenant? • An isolated or personalized run-time environment context that cannot be
shared across PaaS consumers
• Tenant specific personalization can occur across multiple personalization dimensions • Information access privileges • Information aggregation and composition • Business processes and rules • Service levels and Quality of Service • Security policies, subscriber entitlements, and social network access privileges • Monetization rates
• Personalization may require loading code, configuration files, or data
• Tenant isolation dictated by expected performance, security requirements, and legacy technology. • PaaS security managers, code deployers, and tenant-aware load balancing
influences required container-level isolation
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Platform as a Service Architecture
What is a container? • A standalone, Internet addressable node offering
application platform services • Web application hosting, API management, integration
endpoint hosting, ESB mediation, registry services, identity management, relational database
• Containers host tenant resources and context
• Code, configuration files, data, process definitions, rules, policies, entitlements
• Containers may serve
• a single tenant at a time (dedicated), or • multiple-tenants at a time (shared)
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Tenant Scaling Method Impacts Value Proposition • Single Application
Tenant per
• Dedicated Application Server Container
Multiple Application Tenants per
Shared Application Platform Service Container
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Partitions modify value proposition
• Single, flat namespace Multiple partitions and segmented name space
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Partitioning and Tenancy Implications
Tenant Context
Container
Service Partition
Application Solution Tenant Traffic
ESB
ESB-1
Tenant-1 Tenant-3
ESB-2
Tenant-2
Web Applicati
on
AS-1
Tenant-1 Tenant-2
Three (3) Container Instances
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Scaling your Cloud
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How to size an infrastructure
• Expected Maximum TPS
– Any max latency requirements
• Work done per transaction
• Size of messages
• Availability
• Deployment needs (e.g. specific setup might need based on the infrastructure policy etc.)
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Cloud Capacity Planning
• Service types
• System load – Per service type
– Administration
• Scaling – Static
– Dynamic
• PaaS system and deployment architecture
• Limitation of IaaS
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• Stratos Controller
- Management, Governance, Monitoring component - System security
• Stratos Service Cluster - Worker nodes provide the runtime for application logic / services - Administrator nodes to create, manage, govern the application
logic / services
Controller
Service Cluster
1:M
WSO2 Stratos Component Architecture
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Scaling Stratos Controller
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i – Number of WSO2 Carbon instances x – Number of worker nodes per service cluster y – Number of service clusters In most cases each service node will not have equal number of worker nodes.
i = 2 + (2 +x) y
i = 2 + (2 + x1) + (2 + x2) + …….. + (2 + xn)
Stratos Controller
LB + Admin Node
Z
Stratos Controller instances.
Formula for Static Scaling
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Optimizing Cloud Performance: Cloud Scaling
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Cloud Aware App
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Architectural Difference Between Web Application and Cloud Application
Web Application • Synchronous request-reply
interaction • Centralized state (i.e. single
database) and session management
• Clustered server instances • Silo architecture
Cloud Application • Asynchronous interaction • Queues and workers • Scale out across datacenters
and providers • Distributed state and session
management • Autonomous service instances • Tenant context personalization • Shared JVM / Shared Schema • Shared nothing architecture
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PaaS Evaluation Framework
Programming Model • Actor model (i.e. message passing instead of function
invocation • RESTful interactions • Dynamic recoverability • Consensus protocols • Asynchronous rather than synchronous interactions • Shared nothing architecture • Data partitioning and sharding • Federated data queries • Service orchestration • Functional programming • MapReduce
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Cloud Application Demo • Register a new tenant
– Show the self service aspect, multi tenancy aspect
– Create and provision a new tenant on shared infrastructure
• Demonstrate PaaS facilities available for a tenant (metering, billing, logs)
• Upload an existing web application to the tenant
– Demonstrate the zero cost/easy migration of applications
• Creating a new hello world web application
– Demonstrate the procedure to create an application
– Deploy application to Cloud using WSO2 Dveloper Studio
• Secure the web application(Tie the authentication to underlying user model).
• Create a database
– Relational storage model options
– NoSQL storage model options
• Access a database via web application
• Expose a database table as data services.
• Demonstrate WSO2 Stratos and WSO2 StratosLive application platform services
• Explain the programming model + services
– Access "CarbonContext” within applications
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Optimizing Cloud Performance: Asset Lifecycle
Tenant Traffic Balancer
Code Deployer
Activity Metering
Instance Scaling
Code Development and Update
Code Synchronizer
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Optimizing Cloud Performance
Stratos Monitoring, Metering, and Billing
• Number of users and applications
• Tenant Storage
• Tenant transaction activity
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Cloud-aware Design
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Application Architecture Crossroads
Innovation
Familiarity
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Migrated or Native
Web Application • Synchronous request-reply
interaction • Centralized state (i.e. single
database) and session management
• Clustered server instances • Silo architecture
Cloud Application • Asynchronous interaction • Queues and workers • Scale out across datacenters
and providers • Distributed state and session
management • Autonomous service instances • Tenant context personalization • Shared JVM / Shared Schema • Shared nothing architecture
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Cloud Application Patterns and Anti-Patterns
18
Deterministic performance
Deploy and execute on optimum topology
Separation of concerns
Embarrassingly Parallel / Shared Nothing ArchitectureMinimal
Consumption
Failure Resilient Leaky interfaces
Tightly coupled modules
Monolithic footprint
Single threaded, serial execution
Resource locks Single tenancy model
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Cloud Aware Application Use Cases and Underlying Cloud Patterns
• Maximize utilization – Requires deterministic performance – Load balance based on tenant, service, and workload,
context
• Increase reliability, availability, scalability – Shared nothing architecture – Stateless server-side elements – Consensus protocols
• Ecosystem platform – Monetize assets based on business value – Tenant/Consumer personalization and isolation – Sharing domain specific business capabilities
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Cloud Architecture Best Practices
Transitioning to a New normal – Traditional practices may not apply • Distributed and federated interactions
– Event based, heterogeneous systems, network latency
• Configurable containers and engines – Declarative data, rules, and process definitions
• De-normalized and simplified data models – Hadoop/BigTable, Hypertext media, simple NoSQL entities
• Expect failure – Systems span transactional control
• Applications decomposed into distinct services – Federated environment drives autonomy, statelessness, and
composition
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Cloud-aware Design
Cloud-aware Application
Parallelizable, Shared nothing
Asynchronous, stateless services
Fine grained, modular design
Tenant personalization
Efficient resource consumption
Deterministic performance
Multi-tenant Application Platform Services
ESB
Application Server
Business Process
Registry
Identity Management
Storage
PaaS Framework
Controller Load
balancer
Asset Deployer and Synchronizer
Repositories Metering and
Billing
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Scaling Cloud Adoption
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Cloud Business Value Blockers
• Silo owners
• Adoption curve
• Trust barrier
• Unknown baseline
• Funding model
Source: http://blog.industryweapon.com/2010/01/beware-of-the-business-blocker/
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Architecture Shapes Value
• Resource friendly := small footprint, minimal consumption,
parallelizable workloads
• Poolablility := Non-exclusive use, short usage duration
• Automation := decrease activity time, latency between
steps
• Governance := encourage trust, communication,
coordination
• Distribution friendly:= Stateless, autonomous
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DevOp Principles
• Iterative
• Incremental
• Continuous
• Automated
• Self-service
• Collaborative
• Holistic
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DevOps Processes
• Self-service configuration
• Automated provisioning
• Continuous build
• Continuous integration
• Continuous delivery
• Automated release management
• Incremental testing
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DevOps Tooling
• Self service project and policy configuration – Via project configuration portals
– Security, service levels, frameworks, usage, topology
• Automated platform provisioning – Via service tier templates
– Framework and policy enforcement points (PEPs)
• Process automation – Continuous build, test, and deployment
– Code promotion and synchronization across environments and servers
• Dependency analysis and impact analysis
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Defining Governance
• Ensuring people do the right thing
• Make doing the right thing the easy path – via automation
• Spans precepts, policies, people, and process
Governance applies to many domains – Design and development
– Operational processes and run-time environment
– Organizational resources
• Effective governance requires a big picture view of portfolio and dependencies
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Cloud Governance extends general purpose Registry & Repository
• Store Cloud Governance Artifacts:
– Contracts, Models, Workflows, Service Definitions, Documentation
– SLAs, Monetization Rates, Usage Limits
– Cloud Service Dependencies and Machine Instance Configurations
– Scale and Resource Pool Policies
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Automated Governance
Requires
• Service catalogue and service tiers
• Demand and capacity management
• Lifecycle management and workflow
• Continuous provisioning and deployment
• Cloud management integration
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WSO2 AppFactory
A Cloud-based, agile, DevOps approach to application design, development, and delivery
– On-demand self service and Cloud provisioning
– Continuous build, continuous integration, continuous test, and continuous delivery
– Governed, iterative lifecycle management across hybrid clouds and composite applications
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WSO2AppFactory
Existing IT infrastructure
Scalable Private Cloud infrastructure
CIO/Management Dashboard
Workflow managedbuild and deploy
Stratos Multi-tenant elasticintegration and ESB runtime
Governanceand Identity
API Management
Lightweight High PerformanceIntegration
Partner and Mobile applications
WSO2 AppFactory
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WSO2 AppFactory
• For developers • Simplifies project setup and provisioning
• Fits into their existing IDE (i.e. Eclipse, IDEA, Rational)
• Works with leading development tooling (i.e. SVN, Git, Junit, Selenium, Maven, Jenkins, Bamboo, and JIRA
• For development managers • Manage project lifecycle with well defined checkpoints and phases
• Ensures projects follow governance model and best practices
• Provides consistent frameworks and architecture
• For the CIO and Executive IT management • Development dashboards deliver at a glance view of projects’ status, lifecycle,
activity, and health
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WSO2 App Factory
7/25/2012 55
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Overcoming Cloud Value Blockers: WSO2 AppFactory
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Configuration Governance • Governs any kind of server/system configuration
• Manages Versions and Revisions with checkpointing & rollback
• Manages the full promotion lifecycle spanning across development, testing, staging and production environments
• Deeply integrates with all WSO2 Carbon middleware products
• Integration to any 3rd party product via command-line clients
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Key Metrics
• Foundation • Time to create new application environment
• Time to redeploy application
• Optimize • Minimum and maximum scale
• Scale frequency (i.e. time to scale up/down)
• Transformation • Time and effort required integrating business process, event
processor – creating a complex app.
• Time and effort required to apply policy across tenant(s)
• Cost to operate application per user or transaction
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Quick Start Use Cases
• DevOps Tooling and On-demand self-service
• Automated Governance
• Service level management and elastic scale
• Consumption based pricing and billing
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Resources • Try StratosLive right now:
– https://stratoslive.wso2.com/
• Read about Stratos: – http://wso2.com/cloud/stratos/ – Source Download available
• White Paper – Selecting Platform as a Service
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