This document provides an overview of Kakaocorp's cloud and data center technologies and practices. It discusses Kakaocorp's use of OpenStack for its cloud computing platform, as well as its adoption of DevOps culture and tools like Chef configuration management. The document also describes Kakaocorp's centralized CMDB, monitoring, and deployment systems that form the control plane for its data center automation. Kakaocorp's integrated information service bus called KEMI is presented as well.

1. Kakaocorp
Cloud
And DataCenter
But also Openstack
Andrew Yongjoon Kong
andrew.kong@kakaocorp.com
LTHlab

2. KakaocorpAndrew. Yongjoon kong
• Cloud Technical Advisory for Government Broad Cast Agency
• Adjunct Prof. Ajou Univ
• Korea Data Base Agency Acting Professor for Bigdata
• Member of National Information Agency Bigdata Advisory committee
• KT cloudware Tech lead(ex)!
• Kakao à Daum Kakao à Kakaocorp, Cloud Computing Cell lead
Supervised,
Korean
edition
Korean Edition
coming soon.

3. KakaocorpOur vision.

4. KakaocorpF1 team
racer ==
developer
F1 car ==
Computing
resource
mechanic ==
engineer

5. KakaocorpF1 team : Strategy
Fast Change means
Successful Race!
Those Tires are
Changed within
Few Seconds!

6. KakaocorpAgile Mith

7. KakaocorpWhat is Cloud?
• Cloud == “Programmable Resource Management”
• What is Programmable?
• What is Resource?
• What is Management?
• Cloud is the one of the ways of managing/deploying
resources
• Basically, It’s culture.
• Tech. can support this culture
• Our culture is “Automation”

8. KakaocorpWhat is Data Center?
A data center is a facility that centralizes an organization’s IT
operations and equipment, and where it stores, manages, and
disseminates its data.

9. KakaocorpWhat is Data Center? (Before Cloud)
A data center is a facility that centralizes an organization’s IT
operations and equipment, and where it stores, manages, and
disseminates its data.
Tranditional Key Concepts

10. KakaocorpWhat is Data Center? (After Cloud)
A data center is a facility that centralizes an organization’s IT
operations and equipment, and where it stores, manages, and
disseminates its data.
New Key Concepts
Centralized
Data
A
P
I
User

11. KakaocorpCloud Data Center’s Must-have function1 : Centralized CMDB
Centralized
CMDB
Network
Server
storage
ERP
Configuration
Automation
Asset
Management
Data Center

12. Kakaocorp
Data Center
Cloud Data Center’s must-have function2 : Centralized Measuring
System
Centralized
Measuring
System
Network
Server
storage
billing
Autocaling
Alerting
Monitoroing

13. Kakaocorp
Data Center
Cloud Data Center’s must-have function 3 : Central Deploying
System
User:
Defines
resource
VM
Server
container
DB
Web
was
Queue
scheduler
manager
Centralized
Deploying
System
Resource Pool

14. KakaocorpCloud Data Center – Center of Data Management
Centralized
CMDB
Centralized
Measuring
System
Centralized
Deploying
System
Data Center Control Plane
DataCenter Data plane
(P.M / V.M. / Network / Cloud /Container )

15. KakaocorpSome Numbers
7xxx VMs is running.
We revealed this already last Feb. in Openstack Community Days, Korea
superuser.openstack.org

16. KakaocorpSome Numbers
964 tenants
455 pull request since 2014.9
136 VMs are created/deleted per day

17. KakaocorpSome information about kakao Openstack
openstack release from grizzly to Kilo
total 3Region
additional service Heat/Trove/Sahara

18. KakaocorpCloud, We do adopt devops culture : KField

19. KakaocorpCMDB based Configuration Automation
System
team
Network
teamCMDB API
New servers
New servers
New servers
New servers
toolbox
(baremetal
provisioner)
provisioned servers
provisioned servers
provisioned servers
provisioned server
Chef server
Our
Team
NSDB
Central
monitoring
tree
switches, router, vlans

20. KakaocorpCloud, we do have SDN, not have Openflow, No others
eth0
Compute node
nova-compute
neutron-
linuxbridge-
agent
neutron-dhcp-
agent
Gateway
10.10.100.1
linux bridge
vm
IP:10.10.100.2/32
Routing Table
1 10.10.100.2/32 via 192.1.1.201
BGP
192.1.1.202
BGP
Virtual Switch block
Process block
Neutron-l3-agent
vlan
vlan
Virtual Router
Service Route Table
1 10.10.100.2 via
10.10.100.1
Management Route Table
1
Practice Frugality to Boost Creativity
No Subnet,
No Openvswitch
No tunnel
No DPDK
192.1.1.201 Physical Router

21. KakaocorpIntegrated Information Service Bus & EIP : Code Name KEMI
Based on Opensource
Component
• Kafka
• Samza
• Camel
• Storm
• Gobblin
• Yarn
• HDFS
• Etcd
• OpenTSDB
• Hbase
• Tajo
• Grafana

22. KakaocorpIntegrated Information Service Bus & EIP : Code Name Kemi
Enterprise Integration
• Topic based Data ETL
• Can cover every computing
resource ( Physical Server,
Virtual instance, Container,
Public Cloud )
• Abstracting “Data Center
Information layer”
• Can make deep engineering
experience over every
resources.
Physical
Servers
Virtual
Instances
Containers
External
Clouds
Others
(switches,
logs)
monitoring
KEMI
IMS
(kakao CMDB
API)
SB
Rule
Engine
Notificati
on
ETL
Data Center Information abstraction layer
API
predicting
scheduling
Openstack
Heat
Other
Service
API
Data Center (or Service ) Management Activity
control

23. KakaocorpQ&A
Q&AP.S. We’re hiring, always!
http://www.kakaocorp.com/recruit