Sharing about how to build container ecosystem in AWS, topic contain Kubernetes, CoreOS, Terraform, Docker

1. Container (feat. AWS)

2. Hello!
I am Tom Tsai From

4. What I Talk Today ?
AWS
Kubernetes
Terraform
CoreOS
Docker

5. What Happened ?
Exist Service Wants to Migrate From
AT&T Data Center to AWS

6. Technical Debt
- Service Feature Out of Date
- Trap in The Infrastructure
- Without Scalability

7. Not Just Migration...
- Application Refactory
- Micro Service Adoption
- Container Introducing

8. Infrastructure Redesign!?
Just Only Migration V.S. Leverage AWS Resource

9. Comparison
AWS RESOURCE OTHERS
Database RDS Self Host
Share Storage EFS Self Host
Docker Registry ECR Self Host
... ... ...
Container Orchestration ECS Host K8S

10. Why Kubernetes ?!
- Both ECS & K8S Can Solve All My
Problems
- Interoperability V.S. Vendor Lock-in
- Familiarity & Tight Schedule
- Popularity & Community

11. Let’s Get Started

12. Container Ecosystem

13. 1.
Kubernetes
K8S As A Production Service (feat. AWS)

14. Kubernetes Infrastructure

15. Kubernetes Module
Kubernetes Master Kubernetes Worker
Etcd Cluster
Flannel
Docker
Kubelet
K8S Proxy
K8S API Server
K8S Control Manager
k8S Scheduler
Etcd Proxy
Flannel
Docker
Kubelet
K8S Proxy
CoreOS: See You Later !!

16. Kubernetes Scalability
Workers Pods
Horizontal # of Workers
(https://goo.gl/qrJuHE)
# of Pods
(https://goo.gl/mdoZFY)
Vertical Resources for a Workers
(Different EC2 Type?)
Resources for a Pod
(Under Development)

17. 2.
CoreOS
CoreOS Host Kubernetes (feat. AWS)

18. CoreOS Host Kubernetes

19. How K8S Run in CoreOS
K8S Master K8S
Worker
Docker Container
(Hyperkube)
- K8S Proxy
- K8S API Server
- K8S Control Manager
- k8S Scheduler
Docker Container
(Hyperkube)
- K8S Proxy
RKT Container
- Etcd (etcd-wrapper)
- Flannel (flannel-wrapper)
- Kubelet (kubelet-wrapper)

20. How To Update CoreOS
Update Linux OS is Hard, But Not
CoreOS

21. CoreOS Release Channel

22. CoreOS Update Strategies
STRATEGY DESCRIPTION
etcd-lock
(Stage)
Reboot after first taking a distributed
lock in etcd
reboot
(Dev)
Reboot immediately after an update is
applied
off
(Prod)
Do not reboot after updates are applied

23. 3.
Terraform
Terraform Build Everything (.feat
AWS)

24. Avoid Add AWS Resource Manually
Using AWS Cloudformation, Hashicorp
Terraform to add AWS resource is good policy
(Infrastructure As Code)

25. Not Today
● It’s a Long Story to Say ...
● Refer to kz8s/tack

26. Thanks!
Any questions?
You can find me at smalltown@awsug.tw