Devstack is an opinionated installer for Openstack. Gigaspaces Cloudify uses the Ravello cloud to run multiple instances of Devstack, with nested virutalization, each with a different openstack version and configuration

1. Copyright © GigaSpaces 2015. All rights reserved.Copyright © GigaSpaces 2015. All rights reserved.
Devstack on Demand
Barak Merimovich, Gigaspaces
Gal Moav, Ravello

2. Copyright © GigaSpaces 2015. All rights reserved.
Agenda
● What is Devstack
● Why Devstack on demand
● Introducing Ravello
● Demo
● Some recommendations
● Future Plans

3. Copyright © GigaSpaces 2015. All rights reserved.
What is Cloudify?
Send
Metrics
Execute
Policy
Feedback
Correlate
with
Historical
Events
Real Time
Analytics
Deploy
Fail-
over
Scale
Real Time Analytics Cloud Infrastructure
Intelligent Orchestration
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4. Copyright © GigaSpaces 2015. All rights reserved.
What is Devstack?
“DevStack is an opinionated script to quickly
create an OpenStack development
environment. It can also be used to
demonstrate starting/running OpenStack
services
...
DevStack is not and has never been
intended to be a general OpenStack
installer. “

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Why Devstack on Demand?
● How do you test a cloud orchestrator?
● What Clouds do you test?
● What Versions?
● What scenarios?

6. 6www.ravellosystems.com
About us
L2 networking
L3+ networking
‘98–‘05
‘05–‘11
’11+
Backed by … Awarded
best of
VMworld

7. www.ravellosystems.com
OpenStack dev/test - need for agility
Classic candidate for the public cloud !
• Multi-node dev/test environments
• Many different possible configurations
• Many different deployment methods
• Different versions
• Scale factor – (e.g. one node for functional tests, 50 nodes for scale
tests)
• Bursty usage patterns

8. www.ravellosystems.com
Why you can’t run Openstack on AWS
x86 serverx86 server
XenXen
VMVM VMVM VMVM
AWS
OpenStack with KVMOpenStack with KVM
VTVT
!!
Cannot run a
hypervisor (KVM,
ESX, etc) without
Intel VTx/AMD
SVM.
Very limited L2
access – so no
complex
OpenStack
networking)

9. www.ravellosystems.com
HVX: virtual infrastructure for the cloud
XenXen
HVXHVX
VMVM VMVM VMVM
• Nested virtualization
• Binary translation
• Exposes VMware or KVM
devices to the VM on top
• Software defined networking
• Clean L2 environment
• Maintain IP addresses
(DHCP/Static, DNS …)
• Storage abstraction
x86 hardwarex86 hardware
Run entire VMware/KVM workloads in AWS or Google without
making any changes. Same VMs, same networking, storage …

10. www.ravellosystems.com
2 modes of HVX
AWS or GoogleAWS or Google
HVXHVX
VMVM VMVM VMVM
AWS or GoogleAWS or Google
VMVM VMVM VMVM
OpenStack with KVMOpenStack with KVM
VMware workloads (VMs,
networking) on AWS or
Google
OpenStack labs on AWS
or Google
Mode 1: Nested
virtualization
Mode 2: Nested2
virtualization (Inception)
InceptionInceptionHVX

11. 6/21/15
Ravello Systems, Inc.
11
AWS/GCEAWS/GCE
OpenStack with KVM on Ravello

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Demo
● Let's see it in action

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Some Notes
● Networking can be hard
● Accessing nested Vms is the real pain
● Proxies are easiest
● One box – one version
● Multi-node devstack configurations are
possible – not all are tested
● Stick with single node for most cases

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Future Cloud Environments
● Devstack with no Security Groups
● Devstack latest
● Devcloud (cloudstack in a box)
● vSphere 5.1/5.5
● vSphere 6.0
● vCloud

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Future Work
● Performance improvements
● rejoin-stack.sh

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Final Words...

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