Massive Scale Public Cloud manages massive physical devices and supports several product lines. Facing the challenges of different types of customers' demand on global distributed cloud nodes, how to schedule the cloud resources and assign to users effectively and solidly? An useful and productive Cloud resources scheduling system will manage those. CTO of SpeedyCloud, Dong Wei, shared his precious experiences on this topic. Visit http://www.speedycloud.cn to find out more.

1. 北京迅达云成科技有限公司 www.speedycloud.cn
Beijing SpeedyCloud Technology Co., Ltd.,
www.speedycloud.cn 2015.8 @ Beijing
WELCOME
The Evolution of
SpeedyCloud Resources
Scheduling System

2. 北京迅达云成科技有限公司 www.speedycloud.cn
What is a Scheduling System

3. 北京迅达云成科技有限公司 www.speedycloud.cn
What does Scheduling System
of Cloud Platform usually do?

4. 北京迅达云成科技有限公司 www.speedycloud.cn
Cloud
Server
Cloud
Storage
SDN
Network
Firewall
Other
Services
Load
Balancing
Cloud
CDN

5. 北京迅达云成科技有限公司 www.speedycloud.cn

6. 北京迅达云成科技有限公司 www.speedycloud.cn
How?
Roman wasn’t built in one day
Let’s find out how it evolves from scratch!

7. 北京迅达云成科技有限公司 www.speedycloud.cn
Scenario 1:
Description:
Provision Cloud server for client
using Web
Context:
1. Have developers dedicated for
presentation layer
2. Only develop back-end
business logics
3. Parameters validation and
exceptions omitted
Web
DB Physical
Server
1
2
3
4
5
6
Python + Django + Shell
KVM
MySQL

8. 北京迅达云成科技有限公司 www.speedycloud.cn
Scenario 2:
Description:
Long time waiting when
client provisions several
cloud servers
Solution:
Change sequential
allocation to multi-thread

9. 北京迅达云成科技有限公司 www.speedycloud.cn
Scenario 3:
Description:
Multi datacenters deployed to
satisfy increasing customers; long
time waiting occurred till timeout,
but PDB can’t be used to debug
Solution:
Change to multi-process from
multi-thread
Web
DB Physical
Server
Web
DB
Datacenter A
Datacenter B
Datacenter C
Datacenter D
Datacenter E

10. 北京迅达云成科技有限公司 www.speedycloud.cn
Scenario 4:
Description:
Failure occurred due to
network jittering from some
datacenters to control center,
and control center can’t be
notified even if cloud servers
successfully were provisioned.
Solution:
1. Change to BGP datacenter
2. Message Queue introduced to
solve the timeout
Web
DB
Datacenter A
Datacenter B
Datacenter C
Datacenter D
Datacenter E
Datacenter B
Datacenter C
Datacenter D
Datacenter E
Web
DB
Datacenter A
MQ
Worker

11. 北京迅达云成科技有限公司 www.speedycloud.cn
Scenario 5:
Description:
1. More devices upgrades and
maintenances needed.
2. Client resource application
need to be handled even
when upgrading web front-
end.
Datacenter B
Datacenter C
Datacenter D
Datacenter E
Web
DB
Datacenter A
MQ
Worker
Solution:
1. Live migration of host and hot
patch for OS
2. Add System Halt Status
3. Add Node Halt Status
Datacenter B
Datacenter C
Datacenter D
Datacenter E
Web
DB
Datacenter A
MQ
Worker
Job
Tracker
1. Add System Halt Status
2. Add Node Halt Status

12. 北京迅达云成科技有限公司 www.speedycloud.cn
Thanks!
Beijing SpeedyCloud Technology Co., Ltd.,
www.speedycloud.cn