This document discusses setting up a private cloud and compares it to public cloud options. It defines cloud computing models including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). It then describes private, public, hybrid, and community cloud deployment models. The document focuses on setting up a private IaaS cloud using Ubuntu Enterprise Cloud (UEC) to provide infrastructure on an organization's own data centers. It notes the prerequisites for private cloud, and recommends also implementing a PaaS on top of the IaaS for a more complete platform to develop cloud native applications.

1. Setting up an in-house
Private Cloud
Chintana Wilamuna
chintana@wso2.com

2. Cloud Computing
• Buy computing power, storage or
services on demand
• Service Delivery Model
• What is given “as a Service”
• Pay per use
• Self service provisioning
• Virtually unlimited resources
• Resource sharing
• Cloud Deployment Model
• Where is the cloud deployed

3. Cloud Computing – Service Delivery Model
For end-users
For developers, integrators, architects
For infrastructure specialists

4. Cloud Computing – Deployment Model
● Public
– IaaS, PaaS, SaaS available on the Internet
– Use one of the cloud service providers
– Information stored and managed by provider - SLA
● Private
– Have a cloud, in-house
– IaaS provides by hardware on your data centers
– PaaS running on your IaaS
– SaaS executing on your PaaS
● Hybrid
● Community

5. Hybrid cloud
● Combination of private + public cloud
● Private cloud for core services
● Public cloud for burst capacity
– Short term

6. Bridging private & public clouds
1. Use WSO2 Cloud Services Gateway
(CSG)
2. Use Amazon Virtual Private Cloud
(VPC)

7. WSO2 Cloud Services Gateway

8. Amazon Virtual Private Cloud
http://aws.amazon.com/vpc/

9. SOA & cloud computing

10. Enterprise IT in 2010

11. Enterprise IT in 2015+

12. Why public cloud?
● No need to buy machines
● No need to setup
● No need to spend anything, if we are
not using
● No need to wait, if you need more
computing power
● It is just out there, ready to be used

13. Why not public cloud?
● Data is wealth, key to competitive
advantage
– Not supposed to move it out of premises
● Security reasons
– Take no chance on sensitive elements in IT
● Mainframe -> cloud
– Legacy apps are better off the way they are
● Quality of service - Availability, SLA
● Regulations
– Government and industry regulations

14. Prerequisites for private cloud
● Hardware
– CPUs supporting virtualization
– Large storage
– High speed network
● Cloud ready OS
– Ubuntu Server LTS
● Cloud infrastructure
– Eucalyptus

15. Private cloud - IaaS

16. Private cloud - UEC
● EC2 compatible API
– Stratos Autoscaling code on EC2
● Open source & wide availability
● Ubuntu LTS
– Support for 5 years

17. UEC configuration tips
● Choose the right topology
– # physical systems
– Where CLC/Walrus/CC/NC is installed
– https://help.ubuntu.com/community/UEC/Topologies
● Network configuration
– https://help.ubuntu.com/community/UEC/Tips
● Monitor instance memory usage

18. Beyond private IaaS
● Define your purpose
– Why do I want a private IaaS?
– How to utilize it
– Possible usage patterns
● Too low level?
– Deal with machines/instances
– A minimal OS
● IaaS = cloud?!

19. A complete platform
● PaaS
– Running on top of your IaaS
– More high-level
– Easier to develop
● Concentrate on your apps
● A cloud native PaaS
– Take advantage of “cloud features”

20. Cloud native
• Supports deployment into a Cloud:
– Dynamic and Just-in-Time Discovery and Wiring
• Able to work with the underlying cloud
infrastructure
– Elasticity
• Provisioned as a Service
– Multi-tenant, Portal and Web Service-based provisioning
• Managed as a Service
– Billed and Metered, Flexibly Monitored
• Incrementally Deployed and Tested
– Supports continuous update, side-by-side operation, in-
place testing and incremental production

21. Cloud native middleware

22. Summary
• Cloud computing
• Public / Private / Hybrid / Community clouds
• Bridging public – private clouds
• Future of enterprise IT
• Public cloud pros/cons, why private cloud
• Private cloud – UEC
• Beyond private cloud
• PaaS on top of IaaS - Stratos

23. Thank you!

24. Questions?