Openstack - an introduction to the cloud

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® Copyright 2013 GigaSpaces Ltd. All Rights Reserved

Introduction to
Openstack and the Cloud
January 2014
Barak Merimovich
Cloudify Team Leader
GigaSpaces

AGENDA – SESSION 1

 What is Openstack
 What is a cloud?
 The cloud landscape
 Openstack
 Openstack in Action
 Summary
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WHAT IS OPENSTACK

OpenStack aims to provide the
ubiquitous open source cloud
computing platform for public
and private clouds.

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WHAT IS CLOUD COMPUTING

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WHAT IS OPENSTACK

 Infrastructure as a Service

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WHAT IS INFRASTRUCTURE AS A SERVICE
 The basic building blocks of a data center:
 Storage
 Compute
 Network

 … but ‘virtualized’.
 So what do we mean when we say ‘virtualized’.

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VIRTUAL STORAGE
 I want to store data. I want:
 High Capacity
 High Availability
 Low Cost

 I don’t want:
 To care about buying disks
 To know about the details of high availability
 To talk to an administrator

 An Example!

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VIRTUAL COMPUTE
 Give me a machine where I can run my application.
 I want to:
 Be able to specify the size of the machine – CPU, Disk, Memory
 Be able to specify what Operating System the machine is running

 I don’t:
 Care where the machine is physically installed
 I sure as hell don’t want to install it myself.

 Before we continue, let’s talk about Machine Virtualization

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SOME FACTS
 Moore’s Law: the number of transistors on integrated circuits
doubles approximately every two years
 Computers are getting stronger, faster, more efficient.

 But software does not necessarily keep up.
 High power servers are under utilized.

 Server Sprawl
 poor hardware resource utilization
 poor system and software level security
 wasted energy

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COMPUTER VIRTUALIZATION
 Split a single high power ‘physical’ machine into multiple
smaller ‘virtual’ ones.
 The ‘real’ machine is called the Host OS.
 The ‘virtual’ machines are called Guests.
 The software the runs the virtual machines is called a
Hypervisor.

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HYPERVISOR IMPLEMENTATIONS

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VIRTUALIZATION IN ACTION
 Let’s see a demonstration of a Virtual Machine running in the
VirtualBox Hypervisor.
 Let’s continue with our example.

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VIRTUAL NETWORKING
 Also called Network as a Service (NaaS), or Software Defined
Networking (SDN). Hottest cloud buzzword right now.
 What is a network, anyway?
 The technology that allows computers to communicate with each
other. Simple, right?!

 Network architectures can be VERY complex.

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NETWORK ARCHITECTURES – FLAT NETWORK
 Simple, easy to understand and use.
 This is how most clouds worked up to a year or so ago.
 Real world data centers are not flat – problem with migrating
existing applications to the cloud.

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NETWORK ARCHITECTURES - COMPLEX NETWORKS

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VIRTUAL NETWORKS
 A virtual network link is a link that does not consist of a
physical (wired or wireless) connection between two
computing devices but is implemented using methods of
network virtualization.

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THE CLOUD LANDSCAPE – PUBLIC CLOUDS
 Amazon. Amazon. And more Amazon.

 Also some other people.

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THE CLOUD LANDSCAPE – PRIVATE CLOUDS

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OPENSTACK VERSIONS
Release name

Release date

Included Component code
names [17]

Austin

21 October 2010[44][45]

Nova, Swift

Bexar

3 February 2011[46]

Nova, Glance, Swift

Cactus

15 April 2011[47]

Nova, Glance, Swift

Diablo

22 September 2011[48]

Nova, Glance, Swift

Essex

5 April 2012[49]

Nova, Glance, Swift, Horizon,
Keystone

Folsom

27 September 2012[50]

Keystone, Quantum, Cinder

Grizzly

4 April 2013[51]

Keystone, Quantum, Cinder

17 October 2013[52]

Keystone, Neutron, Cinder,
Heat, Ceilometer

Havana

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OPENSTACK CONCEPTUAL COMPONENTS

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OPENSTACK LOGICAL DIAGRAM

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OPENSTACK IS VERY DEVELOPER FOCUSED
 Install only the components you need.
 Deploy the components on separate machines, as required.
 Openstack is pluggable:
 Storage plugins for alternate storage devices
 Compute plugins for alternate hypervisors
 Horizon plugins for extending the OpenStack dashboard

 Openstack is extensible
 Add your own components and infrastructure.

 One API, many clouds (HP, Rackspace, private)

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HUGE DEVELOPER COMMUNITY
 1000 different contributors to Openstack Havana.

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OPENSTACK IN ACTION
 Let’s have a look at the HP public cloud, which is based on
Openstack Grizzly with some modifications.

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SUMMARY
 Openstack is an IaaS for both private and public cloud, and
aims to be more.
 Built for scalability, pluggability, extensibility.
 Huge developer community
 Industry backing

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QUESTIONS

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Openstack - an introduction to the cloud

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