陳逸凡 11/14 Kubernetes「容企新航向」巡迴論壇－台中場

1. 利用 Kubernetes 實現
高可靠應用
alfieYFC inwinSTACK
alfie.yfc inwinSTACK
Alfie Chen
2017/11/14
alfie.c@inwinstack.com

2. Agenda
World of Microservices
Kubernetes for Beginners
NodeRed Chatbot w/ K8S

3. World of Microservices
Virtual Machines, Containers, etc.

4. App Development Changes
• Huge Applications
• Hours to Build
• Huge Downtime
• Microservices
• Container Deployment
• Independent Deployments
• Fast Version Releases

5. What is Microservices?
Kitchen
Office
Men’s Room Women’s Room
Frontdesk
Dining Area
entrance

6. What is Microservices?
Kitchen
Office
Men’s Room Women’s Room
Frontdesk
Dining Area
entrance

7. Nginx
(Reverse Proxy Service)
Bootstrap
(Front-end Framework)
Rails
(Web Framework)
Sidekiq
(Background Processing Framework)
Redis
(Storage)
Postgresql
(Database)
Elastic
(DB Search Engine)
What is Microservices?

8. What is Microservices?
Physical Server
VM VM VM VM
Hypervisor
Physical Server
Software Program
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101010101010101
010101010101010
010101010101010
101010101010101
010101010101010
101010101010101
010101010101010
010101010101010
101010101010101
010101010101010
101010101010101
010101010101010
010101010101010
101010101010101
010101010101010
101010101010101
010101010101010

9. What is Microservices?

10. What is Microservices?
Kitchen
Office
Men’s Room Women’s Room
Frontdesk
Dining Area
entrance

11. What is Microservices?
Physical Server
Software Program
Physical Server
VM VM VM VM
Hypervisor
Physical Server
Container Container Container Container
Container Engine
(Docker)

12. What is Microservices?
Kitchen
Office
Men’s Room Women’s Room
Frontdesk
Dining Area
entrance
Physical Server
Container Container Container Container
Container Engine
(Docker)

13. Kubernetes for Beginners (kinda..)

14. Kubernetes Cluster
Physical Server
Minion
kube-proxykubelet
Pod
Container
Container
Pod
Container
Pod
Container
Pod
Container
Container
Physical Server
Minion
kube-proxykubelet
Pod
Container
Container
Pod
Container
Pod
Container
Container
10G
Switch
Network:172.24.0.0/24
Gateway:172.24.0.254
Physical Server
Master
Controller
Manager
etcdSchedulerAPI Server

15. Kubernetes Cluster
Physical Server
Minion
kube-proxykubelet
Pod
Container
Container
Pod
Container
Pod
Container
Pod
Container
Container
Physical Server
Minion
kube-proxykubelet
Pod
Container
Container
Pod
Container
Pod
Container
Container
Physical Server
Master
Controller
Manager
etcdSchedulerAPI Server

16. Concepts & Terms
• Controllers
o Deployment (deploy)
o Stateful Set
o Daemon Set (ds)
o Jobs
https://kubernetes.io/docs/concepts/

17. Concepts & Terms
• Deployment (deploy)
o Stateless
o Availability > Consistency
o Web Frontends

18. Concepts & Terms
• Deployment (deploy)
o Stateless
o Availability > Consistency
o Web Frontends

19. NodeRed Chatbot w/ K8S
Running FB RedBot containers as a Deployment

20. VM Architecture
<func>
Pass Master
Response Only
VM
VM
MQ
Master
Slave
Response

21. K8S Architecture
Minion
Pod Pod
Webhook
Svc
NodePort
192.168.99.100:30294
↓
10.32.0.3:80

22. K8S Architecture
Benefits:
• Resource Utilization
• Scalability
• Auto Load-balance
• Self-healing
Challenges:
• Logging
• Chat Conversation

23. www.inwinstack.com
Thank You!
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