Nova Update - OpenStack Ops Midcycle, Manchester, Feb 2016

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A quick update of whats happening in Nova covering: API v2.1, Cells v2, Scheduler and much more. It was presented at the Ops Midcylce meetup in Manchester UK, Feb 2016.

Software

OpenStack Nova Update
John Garbutt, Principal Engineer, Nova PTL
@johnthetubaguy
OpenStack Ops Midcycle, Manchester, Feb
2016

2
Ops Feedback
https://etherpad.openstack.org/p/MAN-ops-Nova

Image FPO
3
Why is johnthetubaguy talking?
3

Image FPO
4
Do you really play the Tuba?
4

6
to provide massively scalable ,
on demand, self ser vice
access to compute resources
OpenStack Nova’s Mission

7
Priorities
• Good API with a Strong Ecosystem
• Robust and Reliable
• Live Upgrades and Scale out
• Maintain Open Culture
• Stop Scope Creep

8
External Server “HA”
Help
External
HA Tool
Disable
Host
Live-
migrate
Mark
host
down
Evacuate

10
Upgrade
• Data plane and Control plane independence
• Upgrade from:
– Last stable branch
– Previous commit in same cycle
• Existing Configuration “just work”
• Warning before removing Features

11
Old Process
Turn Off
Old
DB
Upgrade
Turn On
New

Image FPO
12
Fix that vulnerability now!

13
Nova Architecture
API Nodes
Behind LB
Compute Compute Compute Compute Compute
Database
Message
Queue
Conductor(s)
Other Control
Nodes
Isolate from DB using
oslo.versionedobjects Versioned RPC Signature
Schema and Data Migrations
Graceful Shutdown
RPC Signature

14
New Upgrade Process
Expand
DB Schema
Restart API
and
Control Plane
Restart
n-compute
SIGHUP
all services

15
New Upgrade Process
API Nodes
Behind LB
Compute Compute Compute Compute Compute
Database
Message
Queue
Conductor(s)
Other Control
Nodes
1
2a
3
4
2b

17
API Users
The Absent The Active Multi-Cloud Ops & Dev
• Cloud upgrades
• But old script
works
• Uses newest APIs
• Check availability
• Multiple clouds
• Different versions
• Single script
• Who is using
what?
• How to evolve
API?

18
API Evolution
v2.0 v2.1 Third Party APIs
• First API
• Alias for v1.1
• Base + Extensions
• Deprecated Legacy Code
• No Extensions
• Better Validation
• Backwards compatible
mode
• Evolve using
“Microversions”
• Replaced by External
Project
• Removed in Mitaka

20
Cells Evolution
API
Compute
Cell 1
Compute
Cell 2
Compute
Cell 3

22
Scheduler
Generic
Resource
Request
Filter Hosts
by Resource
Pools
Pick
Preferred
Host
Acquire
Resource
Claim

24
Live Migration
Fixes Features
• Better CI coverage
• Make all disks configurations
moveable
• Status updates
• Force Complete / Cancel
• Split Networks

5 M I L L I N G T O N R O A D | H AY E S , U N I T E D K I N G D O M U B 3 4 A Z
U S S A L E S : + 4 4 ( 0 ) 2 0 8 71 2 6 5 07 | U K S U P P O R T: 0 8 0 0 9 8 8 0 3 0 0 | W W W. R AC K S PAC E . C O M
© RACKSPACE LTD. | RACKSPACE® AND FANATICAL SUPPORT® ARE SERVICE MARKS OF RACKSPACE US, INC. REGISTERED IN THE UNITED S TATES AND OTHER COUNTRIES. |
WWW.RACKSPACE.COM
Thank you
@johnthetubaguy

26
Ops Feedback
https://etherpad.openstack.org/p/MAN-ops-Nova

OpenStack Nova Liberty focused on maintaining stability while increasing velocity. Key priorities included improving the API, ensuring reliability, enabling live upgrades and scaling. The architecture evolved to separate the data and control planes to reduce downtime during upgrades. Future releases will focus on continued architecture evolution, reducing scope creep, and improving the user experience.

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The National Multifamily Index ranks major U.S. markets based on projected vacancy rates, rent growth, and employment gains. San Francisco and San Jose rank at the top due to strong job growth, low vacancy, and high rents. Markets in the Pacific Northwest and Northeast also rank highly. Atlanta and Riverside-San Bernardino moved into the top 20 due to improving economies and property performance. Midwest markets rank in the lower third despite favorable demand drivers. Supply growth will challenge some markets like Houston and Tampa.

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Marcu & Millichap 2016 U.S. MULTIFAMILY INVESTMENT FORECAST

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一比一原版(UMN毕业证)明尼苏达大学毕业证如何办理

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原版定制美国纽约州立大学奥尔巴尼分校毕业证学位证书原版一模一样

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UI5con 2024 - Bring Your Own Design System

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How do you combine the OpenUI5/SAPUI5 programming model with a design system that makes its controls available as Web Components? Since OpenUI5/SAPUI5 1.120, the framework supports the integration of any Web Components. This makes it possible, for example, to natively embed own Web Components of your design system which are created with Stencil. The integration embeds the Web Components in a way that they can be used naturally in XMLViews, like with standard UI5 controls, and can be bound with data binding. Learn how you can also make use of the Web Components base class in OpenUI5/SAPUI5 to also integrate your Web Components and get inspired by the solution to generate a custom UI5 library providing the Web Components control wrappers for the native ones.

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一比一原版(UMN毕业证)明尼苏达大学毕业证如何办理

原版定制美国纽约州立大学奥尔巴尼分校毕业证学位证书原版一模一样

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Nova Update - OpenStack Ops Midcycle, Manchester, Feb 2016

1. OpenStack Nova Update John Garbutt, Principal Engineer, Nova PTL @johnthetubaguy OpenStack Ops Midcycle, Manchester, Feb 2016

2. 2 Ops Feedback https://etherpad.openstack.org/p/MAN-ops-Nova

3. Image FPO 3 Why is johnthetubaguy talking? 3

4. Image FPO 4 Do you really play the Tuba? 4

5. 5 Nova

6. 6 to provide massively scalable , on demand, self ser vice access to compute resources OpenStack Nova’s Mission

7. 7 Priorities • Good API with a Strong Ecosystem • Robust and Reliable • Live Upgrades and Scale out • Maintain Open Culture • Stop Scope Creep

8. 8 External Server “HA” Help External HA Tool Disable Host Live- migrate Mark host down Evacuate

9. 9 Upgrade

10. 10 Upgrade • Data plane and Control plane independence • Upgrade from: – Last stable branch – Previous commit in same cycle • Existing Configuration “just work” • Warning before removing Features

11. 11 Old Process Turn Off Old DB Upgrade Turn On New

12. Image FPO 12 Fix that vulnerability now!

13. 13 Nova Architecture API Nodes Behind LB Compute Compute Compute Compute Compute Database Message Queue Conductor(s) Other Control Nodes Isolate from DB using oslo.versionedobjects Versioned RPC Signature Schema and Data Migrations Graceful Shutdown RPC Signature

14. 14 New Upgrade Process Expand DB Schema Restart API and Control Plane Restart n-compute SIGHUP all services

15. 15 New Upgrade Process API Nodes Behind LB Compute Compute Compute Compute Compute Database Message Queue Conductor(s) Other Control Nodes 1 2a 3 4 2b

16. 16 API

17. 17 API Users The Absent The Active Multi-Cloud Ops & Dev • Cloud upgrades • But old script works • Uses newest APIs • Check availability • Multiple clouds • Different versions • Single script • Who is using what? • How to evolve API?

18. 18 API Evolution v2.0 v2.1 Third Party APIs • First API • Alias for v1.1 • Base + Extensions • Deprecated Legacy Code • No Extensions • Better Validation • Backwards compatible mode • Evolve using “Microversions” • Replaced by External Project • Removed in Mitaka

19. 19 Cells v2

20. 20 Cells Evolution API Compute Cell 1 Compute Cell 2 Compute Cell 3

21. 21 Scheduler

22. 22 Scheduler Generic Resource Request Filter Hosts by Resource Pools Pick Preferred Host Acquire Resource Claim

23. 23 Live Migration

24. 24 Live Migration Fixes Features • Better CI coverage • Make all disks configurations moveable • Status updates • Force Complete / Cancel • Split Networks

25. 5 M I L L I N G T O N R O A D | H AY E S , U N I T E D K I N G D O M U B 3 4 A Z U S S A L E S : + 4 4 ( 0 ) 2 0 8 71 2 6 5 07 | U K S U P P O R T: 0 8 0 0 9 8 8 0 3 0 0 | W W W. R AC K S PAC E . C O M © RACKSPACE LTD. | RACKSPACE® AND FANATICAL SUPPORT® ARE SERVICE MARKS OF RACKSPACE US, INC. REGISTERED IN THE UNITED S TATES AND OTHER COUNTRIES. | WWW.RACKSPACE.COM Thank you @johnthetubaguy

26. 26 Ops Feedback https://etherpad.openstack.org/p/MAN-ops-Nova

Editor's Notes

Rackspace public cloud powered by OpenStack Nova Started working on OpenStack at Citrix in 2010 Joined nova-core in June 2013, Nova PTL for Liberty and Mitaka Image from unsplash.com https://images.unsplash.com/photo-1418489098061-ce87b5dc3aee?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&s=b928238e71d53b027f5f89cdeb897892
Image from http://www.coronabrass.co.uk/
Mission hasn’t changed. Lack of alignment is a big cause of friction.
What is Nova?
https://upload.wikimedia.org/wikipedia/commons/7/76/Blue_Linckia_Starfish.JPG https://images.unsplash.com/photo-1431794062232-2a99a5431c6c?q=80&fm=jpg&s=2a0c6cb067ffaef134e053d94f555d91 To get the strong ecosystem, API needs to be interoperable and useful.
Pet VMs want Server “HA” Out of Scope for Nova, but we have work to add supporting APIs.
https://upload.wikimedia.org/wikipedia/commons/7/78/Airforce_forklift.jpg https://images.unsplash.com/photo-1429497419816-9ca5cfb4571a?q=80&fm=jpg&s=4bf1164d23eea4f04aeefe1732149cf3 This talk will focus on the control plane
Flow: API (-> DB) -> Conductor (-> Scheduler) -> Compute (talks to other services) Why: Scale small and large: API requests vs Compute nodes Note Upgrade features.
http://www.danplanet.com/blog/2015/06/26/upgrading-nova-to-kilo-with-minimal-downtime/ Aim: zero downtime. Note: no rollback
(1) Expand DB, checks all data migrations are complete, removes any cruft from previous releases (2) Pin RPC, upgrade all the control plane together, but conductor first (3) Talk about graceful compute shutdown, and its limitations (4) Un pin RPC by rechecking
Lets take a look at our users, and what they want. Reference: https://dague.net/2015/06/05/the-nova-api-in-kilo-and-beyond-2/
http://lists.openstack.org/pipermail/openstack-dev/2016-February/086430.html

Nova Update - OpenStack Ops Midcycle, Manchester, Feb 2016

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Editor's Notes