Advanced use cases and approaches with stratos paa s
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- Stratos is an open source PaaS platform that provides a full middleware platform as a service with self-service provisioning capabilities. - StratosLive is a PaaS that runs Stratos in the cloud with various subscription plans including a free demo option. - Stratos services can support multiple tenants in the same container for higher efficiency. Services have network APIs and support multi-tenancy through classloader isolation and tenant-based policies. - An elastic load balancer scales services elastically to handle varying workloads from tenants. It uses a custom deployment of WSO2 Synapse to proxy requests across service instances.
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Advanced use cases and approaches with stratos paa s
- 1. Advanced Use Cases and Approaches with WSO2 Stratos Paul Fremantle CTO and Co-Founder www.wso2.com [email protected] @pzfreo #wso2
- 2. Agenda • This is a follow on to the presentation I gave at Qcon: – http://freo.me/xhHmkP • Quick recap • Understanding the system architecture of Stratos – Identity model – Multi-tenancy – Elastic Load Balancer • How do new Services fit in? • How can I multi-tenant existing code? • Integrating development management into Stratos • Advanced use cases • Summary @pzfreo #wso2 2
- 3. What should you take away from this presentation? • What are Stratos and StratosLive? • How can I try out Stratos? – On the Web? – On your machine? • How can I extend Stratos? • Where can an extensible open PaaS give me competitive advantage? • Where can I get more information? @pzfreo #wso2 3
- 4. Moore’s Law for Data • The amount of data online went from – 5 exabytes in 2002 – 281 exabytes in 2009 • Doubling every 15 months • You cannot deal with this data growth with the same applications – A reasonable conclusion is that the number of applications will double every 15 months too @pzfreo #wso2
- 5. Stratos Overview • Stratos – an Open Source project / product – A full middleware platform available as a service, with self service • Fast provisioning – Based on OSGi • Modular, componentized, standard – Multi-tenant, Elastic, Metered and Billed • Effective and powerful – Available under the Apache License • Open Source, Open License, Open Development • StratosLive – a Platform-as-a-Service – Stratos running in the cloud with various plans • Including a free demo plan @pzfreo #wso2
- 6. Stratos resources • Running on the web – http://stratoslive.wso2.com • Stratos SVN – http://svn.wso2.org/repos/wso2/trunk/stratos/ • Stratos-dev list – https://mail.wso2.org/cgi-bin/mailman/listinfo/stratos- dev • Blog on how to build / install – http://yumani.blogspot.com/2011/06/setting-up-wso2- stratos-in-personal.html @pzfreo #wso2 6
- 7. Private Cloud Middleware Platform @pzfreo #wso2
- 8. StratosLive vs Stratos • StratosLive contains all the “Services” in a default / vanilla state • Stratos can contain: – More services • e.g. New services you create – Fewer services • e.g. just AS/DSS – Customized deployments of services • e.g. ready configured with libraries / APIs / host objects @pzfreo #wso2 8
- 9. Installation options • 1. Full installation (like StratosLive) – Pre-reqs • IaaS – Eucalyptus, vmWare, Ubuntu or Amazon • MySQL & Perl & JVM • Ability to run a number of VMs (one per service) • 2. Laptop/Simple install (on my laptop) – Pre-reqs • A machine with lots of memory (4Gb min, 8GB preferred) • JVM • MySQL & Perl @pzfreo #wso2 9
- 10. Examples and Case Studies • System Integrator – Currently running Stratos for internal projects – Examining the use of Stratos for customer projects and SaaS • Home Loan Bank – WSO2 runs a private deployment of Stratos – Developer sandbox and test environment – Currently apps are then deployed internally in Carbon • Ecosystem PaaS – Combination of cross tenant services / APIs – Allow each tenant to deploy / customise the logic • Mobile PaaS – Building a PaaS environment for a mobile telco • SaaS-enablement of legacy applications @pzfreo #wso2
- 11. ESB and PaaS example Tenant Tenant Tenant Tenant App App App App Internet Gateway (WSO2 ESB providing Traffic Core ESB shaping, QoS, and LB) Core Services @pzfreo #wso2
- 12. Available Services in Stratos (a selection) @pzfreo #wso2 12
- 13. Every Service has a network API • All admin functions and all the low level services are available as SOAP APIs – Full SOAP support, REST in some cases – Always possible to bridge into REST using the ESB • Why? – Clear SOA design • Allow mashups, BPEL and ESB integration – Automated provisioning – Support hybrid multi-tenancy models for legacy software @pzfreo #wso2 13
- 14. Multi-tenancy • Every service can support multiple tenants in the same container – Higher efficiency, lower resources – Can be split tenant per-VM using the MT-aware Load Balancer • Isolation includes classloaders, code signing and Java security policies – Cross-tenant sharing is via the network (REST, SOAP, etc) • Every tenant has all services by default but they can be turned off • You can deploy webapps that are available to all tenants – Super Tenant mode @pzfreo #wso2 14
- 15. Carbon Context • org.wso2.carbon.context.CarbonContext • Access to: – UserRealm (Identity) – Registry – Cache (JSR107) – Endpoint Discovery • All within the correct environment for the tenant or within a super-tenant environment @pzfreo #wso2 15
- 16. Stratos 1.5.2 Services © WSO2 2011 @pzfreo #wso2
- 17. What is a “Stratos Service” • A cluster of one or more network-available servers – could be VMs or JVMs or Linux partitions – Each cluster can logically handle all tenants • Maybe that there is partitioning by tenant or group of tenants – Should support SAML2 single-sign on • Identity is used to identify which tenant • Can be elastically scaled – Not a hard requirement – Elasticity and Multi-tenancy are orthogonal @pzfreo #wso2 17
- 18. List of Stratos Services • cloud-services-desc.xml <cloudServices xmlns="http://wso2.com/carbon/cloud/mgt/services"> <cloudService name="WSO2 Stratos Enterprise Service Bus" default="true"> <label>Stratos Enterprise Service Bus</label> <link>https://esb.cloud-test.wso2.com:9452</link> <icon> https://cloud-test.wso2.com:9443/cloud-services-icons/esb.gif </icon> <productPageURL>http://wso2.com/products/enterprise-service-bus/</productPageURL> <description>Enterprise Service Bus in the cloud.</description> </cloudService> … • The Registry is used to manage which tenants have access to which services: – E.g. /_system/governance/repository/components/org.wso2.stratos/cloud- manager/cloud-services/27/WSO2 Stratos Enterprise Service Bus @pzfreo #wso2 18
- 19. Elastic Auto-Scaling • The WSO2 Elastic Load Balancer is a key part of the Stratos infrastructure – Tenant Self-registration, self-deployment and multi-tenancy could lead to a lot of work on a single server – The Stratos multi-tenancy approach is designed to support the “long-tail” @pzfreo #wso2 19
- 20. Elastic Load Balancer @pzfreo #wso2 20
- 21. Stratos Elastic Load Balancer • A custom deployment of Synapse tuned for passthru proxying and performance • Currently supports EC2 APIs – Amazon, Eucalyptus, OpenStack with vmWare and Rackspace in plan • There is a base AMI ID and a per-service payload zip – ELB starts the AMI on a new VM by passing a payload.zip – - Payload contains S3 credentials, information about Product to be – deployed, configuration files locations, etc. – AMI downloads the payload.zip – AMI connects to S3 using credentials, downloads the service binary from S3 and config files using information from payload.zip • Autoscaling is currently based on concurrent message load – Extensible model – Looking at using wider metering results @pzfreo #wso2 21
- 22. Example of a new Service • PHP Services (in progress) – Using chroot environments • Also looking at LXC (http://lxc.sourceforge.net/) • A lightweight model for virtualization/tenant separation • Each tenant runs on a different ip+port on the server – http://php.stratos.your.com/t/fremantle.org/app • is URL rewritten to – http://ip:port/app • The PHP environment uses the Identity Server and Registry – Provide a store for code – Tenant identity and authorization model • This will be extended to become a full SPI (Service Provider Interface) to plug in any new non-Java Service @pzfreo #wso2 22
- 23. Adding multi-tenancy to existing apps • Start with the PHP Service model • Add in: – HDFS support (multi-tenant filesystem) – RSS support (multi-tenant JDBC/RDBMS) – Multi-tenant Logging model • Can be syslog-based logging calls – Elastic scaling – Metering and Billing calls • Optional – but useful • Multi-language Thrift API @pzfreo #wso2 23
- 24. Integrating Development Management into Stratos • The Stratos Service model is very extensible and flexible – E.g. Dev / Staging / Production can be different “Stratos Services” – Use Registry lifecycles or BPEL to manage the workflow / lifecycle of code into those Services @pzfreo #wso2 24
- 25. Integrating Development Management into Stratos @pzfreo #wso2 25
- 26. Workflows Examples • Add project (aka tenant) – Creates Project Management, SVN, and Stratos Tenant • Add user to project – Configures permissions in SVN, PM and Stratos • Deploy project into production – Initiates approval governance process – Maven build of the code – Deploys into staging • Notifies approval team of new project awaiting approval – Once approved, automatically deploys into Production @pzfreo #wso2 26
- 27. Recap • Understanding Stratos • What are Stratos Services – How do I extend, re-use, reconfigure, add my own • What is the Stratos ELB? – How does it work – Roadmap • How to add multi-tenancy to existing apps • Managing development and governance @pzfreo #wso2 27
- 28. Enterprise Application Development API Store and API Management @pzfreo #wso2
- 29. Users Partners “Your Business As A Service” Tenant Tenant Tenant Tenant Apps Apps Apps Apps Ecosystem Owner PaaS / Stratos API Management / API Store Existing business systems as APIs @pzfreo #wso2
- 30. Vertical PaaS “Your Business as a Service” • Based on real projects that WSO2 is running • Beyond APIs – because it creates a shared governance model and runtime • An opportunity to add significant value to partners: • A complete environment that they can customize • Can include multi-tenanted legacy software • Not just the look and feel but also the behaviour • An ideal platform for shared revenue • A shift in business models enabled by cloud technology @pzfreo #wso2
- 31. “Your Business”-as-a-Service summary • Inherent deep multi-tenancy enables ecosystem plays • Not just shallow per-tenant customization • E.g. eBay Stores, Amazon Sellers • But significant per-tenant customization • Client success stories demonstrates key aspects: • Ecosystem creation • Shared governance and revenue model • Significant benefit beyond APIs • Cloud Development • Automated Governance @pzfreo #wso2
- 32. Questions? http://www.flickr.com/photos/oberazzi/ @pzfreo #wso2 32