This document discusses OpenStack, an open source cloud computing platform. It was started in 2010 by Rackspace and NASA and now has over 150 members. OpenStack consists of several components including Nova for compute, Glance for images, Swift for storage, Keystone for identity, and Horizon for the web interface. The document provides details on each component and demonstrates how to set up an example OpenStack infrastructure with one controller and compute nodes, and how it can scale out by adding more nodes and storage. It also discusses what would happen if components fail and includes an offer of a demo.

2. Creating a Cloud Infrastructure
with OpenStack
Bruno Amaro Almeida
www.brunoamaro.com
https://www.linkedin.com/in/brunoamaroalmeida

3. Agenda
 What is OpenStack
 Components
 Example Infrastructure
 Scalability
 What if?
 Demo

4. Who, When, What …
 OpenStack is a collection of open source software.
 Project started in 2010
 Rackspace and NASA are the key initial contributors.
 Rackspace contributed their "Cloud Files" platform (code) to power the Object Storage
part of the OpenStack
 NASA contributed their "Nebula" platform (code) to power the Compute part.
 OpenStack consortium has managed to have more than 150 members including
Canonical, Dell, Citrix, AT&T, etc.

5. Components
 Nova (Compute Infrastructure)
 Glance (Imaging Service)
 Swift (Storage Infrastructure)
 Keystone (Identity Service)
 Horizon (Administrative Web-Interface)

6. Nova, Compute Infrastructure
 Functions and Features:
 Instance life cycle management
 Management of compute resources
 Networking and Authorization
 REST-based API
 Asynchronous eventually consistent communication
 Hypervisor agnostic : support for Xen, XenServer/XCP, KVM, UML, VMware
vSphere and Hyper-V

7. Nova, Compute Infrastructure
 Components
 API Server (nova-api)
 Message Queue (rabbit-mq server)
 Compute Workers (nova-compute)
 Network Controller (nova-network)
 Volume Worker (nova-volume)
 Scheduler (nova-scheduler)

8. Glance, Imaging Service
 Allow to use any of these storage backends
 Local filesystem (default)
 OpenStack Object Store to store images
 S3 storage directly
 S3 storage with Object Store as the intermediate for S3 access.
 HTTP (read-only)

9. Swift, Storage Infrastructure
 Similar to Amazon Web Services - Simple Storage Service (S3)
 Functions and Features
 Storage of large number of objects
 Storage of large sized objects
 Data Redundancy
 Archival capabilities - Work with large datasets
 Data container for virtual machines and cloud apps
 Media Streaming capabilities
 Secure storage of objects
 Backup and archival
 Extreme scalability

10. Keystone, Identity Service
 Keystone provides identity and access policy services for all
components in the OpenStack family.
 Services
 Token Service (that carries authorization information about an authenticated
user)
 Catalog Service (that contains a list of available services at the users' disposal)
 Policy Service (that let's keystone manage access to specific services by
specific users or groups).

11. Horizon, Administrative Web-Interface
 Services
 Instance Management - Create or terminate instance, view console logs and connect through
VNC, Attaching volumes, etc.
 Access and Security Management - Create security groups, manage keypairs, assign floating
IPs, etc.
 Flavor Management - Manage different flavors or instance virtual hardware templates.
 Image Management - Edit or delete images.
 Manage users, quotas and usage for projects.
 User Management - Create user, etc.
 Volume Management - Creating Volumes and snapshots.
 Object Store Manipulation - Create, delete containers and objects.
 (…)

12. Example Infrastructure
node01
10.11.0.201
Controller
10.11.0.200
storage
10.11.0.[250-X]
Virtual Instances
10.11.3.XInternet

13. Scalability?
node01
10.11.0.201
Controller
10.11.0.200
storage
10.11.0.[250-X]
More CPU power?
+ Nodes
More Storage?
+ Storage Nodes
(GlusterFS, HadoopFS)
Internet

14. What if…?
node01
10.11.0.201
Controller
10.11.0.200
storage
10.11.0.[250-X]
Node Crash
a) Only instances running on that node are affected
b) Instance image still on gluster and not on node
Controller crash?
a) Can’t deploy new instances or access web
interface
b) Instances running on controller are affected
c) Instances running on the nodes are ok 
Storage crash (e.g. GlusterFS)
a) With replication factor of 3, it doesn’t matter
b) Gluster rebalance the cluster.
Internet

15. DEMO
 Install a controller (… using F-Secure EasyStack script)
 Add an image template
 Deploy multiple virtual instances
 Explore nova console commands
 Add a extra nova-compute node

16. Thanks!
Questions?
Bruno Amaro Almeida
www.brunoamaro.com
https://www.linkedin.com/in/brunoamaroalmeida