OpenStack is an open source software platform for building private and public clouds. It allows companies to build their own clouds that provide infrastructure as a service. The software controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through APIs. DevStack is a tool that developers use to quickly deploy OpenStack locally for testing their code changes before they are reviewed. It builds a complete OpenStack development environment on a single node.

1. OpenStack
Introduction
Victor Morales & Geronimo Orozco
March, 31st 2014

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Cloud 101
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3. History – Business Drivers
Capacity planning - Involves ensuring that an organization
has the right infrastructure, resources and services to
support their business and customer base in the future.
Operating Overhead - Reducing the up-front cost of
acquiring new IT infrastructure and the on-going cost of
owning and maintaining said infrastructure.
Operational Agility - The ability of a business to respond to
change by being able to scale its IT resources.

4. History – Technology Innovations
 Grid Computing Technology - Way to provide
computing resources on demand and on a pay-as-you
go basis.
 Clustering Technology - Create a failover system that
employs multiple similar IT resources together to
provide greater availability and reliability.
 Virtualization Technology - Enables physical IT resources
to provide multiple virtual images of themselves.

5. Definition
 Cloud computing is a specialized form of distributed
computing that introduces utilization models for remotely
provisioning scalable and measured IT resources.
Characteristics:
• On-Demand Usage
• Ubiquitous Access
• Multi-tenancy and Resourcing Pooling.
• Elasticity
• Measured Usage
• Resiliency

6. Cloud Delivery models

7. Cloud Deployment models

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9. OpenStack is…
 An open source software that allows any company to build
their own public or private cloud
 Sits above the hypervisor and is hypervisor agnostic
 KVM, Xen, Hyper-V, ESX, LXC.
 Think of it as: “software that powers Amazon’s ECS+S3”
 Its mission is to produce the ubiquitous open source cloud
computing platform that will meet the needs of public and
private cloud providers regardless of size, by being simple to
implement and massively scalable.

10. Conceptual Architecture
Network (Neutron)
Provides "network connectivity
as a service"
Block Storage (Cinder)
Provides persistent block
storage to guest VMs
Compute (Nova)
Provides virtual servers upon
demand.
Dashboard (Horizon)
Modular web-based user
interface for all services.
Image (Glance)
Catalog and repository for
virtual disk images.
Object Storage (Swift)
Allows you to store or
retrieve files.
Identity (Keystone)
Authentication and authorization for all
services.

11. Release History
Release Name Release date Included component code names
Austin 21 October 2010 Nova, Swift
Bexar 3 February 2011 Nova, Glance, Swift
Cactus 15 April 2011 Nova, Glance, Swift
Diablo 22 September
2011
Nova, Glance, Swift
Essex 5 April 2012 Nova, Glance, Swift, Horizon, Keystone
Folsom 27 September
2012
Nova, Glance, Swift, Horizon, Keystone,
Quantum, Cinder
Grizzly 4 April 2013 Nova, Glance, Swift, Horizon, Keystone,
Quantum, Cinder
Havana 17 October 2013 Nova, Glance, Swift, Horizon, Keystone,
Neutron, Cinder, Heat, Ceilometer
Icehouse 13 May 2014 Nova, Glance, Swift, Horizon, Keystone,
Neutron, Cinder, Heat, Ceilometer,
Trove

12. OpenStack official programs
 Compute (Nova)
 Object Storage (Swift)
 Image Service (Glance)
 Identity (Keystone)
 Dashboard (Horizon)
 Networking (Neutron)
 Block Storage (Cinder)
 Telemetry (Ceilometer)
 Orchestration (Heat)
 Database Service (Trove)
 Bare metal (Ironic)
 Queue service (Marconi)
 Data processing (Sahara)
 Key management (Barbican)
 Common Libraries (Oslo)
 Infrastructure
 Documentation
 Quality Assurance (QA)
 Deployment (TripleO)
 Devstack (DevStack)
 Release cycle management

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14. Devstack is…
 A shell script to build complete OpenStack development environment.
 Supports: Ubuntu 12.04 (Precise), Fedora 20 and CentOS/RHEL 6.5( OpenSUSE
and Debian)
 It can run single and multi-node environments
Devstack is not…
 To be used on a production environment.
 The exact way you would deploy OpenStack in production (but it’s close)

15. Who uses Devstack?
 Developers working on OpenStack
 Used to test changes and verify they work in a running
OpenStack deployment
 Used by the CI system to test changes as they are pushed to
gerrit for review.
 Used for demos and proof of concept

16. Devstack in 30 secs…
 http://devstack.org
1. git clone https://github.com/openstack-dev/devstack.git
2. cd devstack
3. ./stack.sh
 Important files:
 localrc: Contains settings for each node running Devstack
 stackrc: git repository and branch information

17. localrc Sample
[[local|localrc]]
FIXED_RANGE=10.254.1.0/24
NETWORK_GATEWAY=10.254.1.1
LOGDAYS=1
LOGFILE=$DEST/logs/stack.sh.log
SCREEN_LOGDIR=$DEST/logs/screen
ADMIN_PASSWORD=quiet
DATABASE_PASSWORD=$ADMIN_PASSWORD
RABBIT_PASSWORD=$ADMIN_PASSWORD
SERVICE_PASSWORD=$ADMIN_PASSWORD
SERVICE_TOKEN=a682f596-76f3-11e3-b3b2-e716f9080d50

18. Virtualize your Devstack with Vagrant
1. git clone –recursive https://github.com/patux/mydevstack.git
2. cd mydevstack
3. vagrant up

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Q & A
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Demo
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