Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery called pods. It helps with deployment, maintenance, and scaling of containerized applications. It provides basic mechanisms for deploying containers on a cluster of nodes, load balancing, scaling, and ensuring availability.

1. 深入淺出
Kubernetes

2. Hello!
I am smalltown
MaiCoin Group Head of SRE
Taipei HashiCorp UG Organizer

4. Outline
K8s 101 Dive into K8s K8s in Action

5. K8s 101
01
MaiCoin 數位資產買賣平台
2013 年現代財富科技有限
公司成立，平台於 2014 年
上線，提供全年不間斷的個
人與法人交易服務，支援多
種幣別，主打小額入手並有
多元的支付管道－銀行轉
帳、超商繳款 (萊爾富)、台幣
餘額方式等，2021 年領先同
業完成台灣金管會的洗錢防
制法令遵循聲明。
☝ 以上為無情工商時間

6. What is Kubernetes?
🐦⬛Some Kind
of Bird?
🐕Some Kind of Dog?
🥭Some Kind of
Fruit?
🥙 Some Kind of
Food?
🏈 Some Kind of Sport? 🌏 A Country in Earth?

7. What is Container?
Virtual Machines Containers
Who is Responsible for ___ ?
● Container Lifecycle
● Service Discovery
● Configuration
Management
● Horizontal Scaling
● …

8. Containers & Kubernetes
Containers

9. Kubernetes Architecture

10. Master and Worker Nodes

11. Kubernetes Controllers

12. Kubernetes Schedulers

13. Container != Docker
Reference

14. Container Runtime
Reference

15. Dive into K8s
02
MAX 數位資產交易所
於 2018 年上線，提供用戶
P2P 交易撮合服務，為全球
排名於前 50 名且台灣最大
數位資產交易平台，亦為全
球首間將用戶法幣資金交由
銀行信託保管，真正落實法
幣信託安全保管；2018 年發
行 MAX Token ；2021 年領
先同業完成台灣金管會的洗
錢防制法令遵循聲明。
☝ 以上為無情工商時間

16. Kubernetes Pod
Reference

17. K8s Deployment & ReplicaSet
Reference

18. Services and Ingress
Reference

19. Kubernetes ConfigMaps
Reference

20. Kubernetes Secrets

21. K8s W/ Secret Management
Reference

22. Kubernetes StaefulSets
Reference

23. Kubernetes DeamonSets
Reference

24. Labels and Selectors
Reference

25. Resource Limitations and Priorities
Reference

26. Kubernetes Evicted Pods (1/2)
Reference

27. Kubernetes Evicted Pods (2/2)
Reference

28. Health Checks and Self-Healing
Reference

29. K8s in Action
03
AMIS 企業級數位資產託管
2016 年帳聯網路科技公司
成立，以太坊聯盟的創始成
員之一，獨家專利技術包含
伊斯坦堡拜占庭共識演算
法、Alice 階層式門檻簽章技
術，提供企業客製化區塊鏈
解決方案與企業級數位資產
保管服務，2021 年 AMIS
Custody 通過 SOC 2 Type I
及 Type II 安全性稽核，以及
ISO 27001 認證。
☝ 以上為無情工商時間

30. Application Deployment (1/2)
GNU/Linux
ELF Binaries Config in /etc
apt, yum, etc
Chef, Puppet, Ansible
Kubernetes
Images K8s Resource
Helm, Kustomize, etc
Argo CD, Flux 2, Fleet

31. Application Deployment (2/2)
Reference

32. Scalability: Horizontal Pod Autoscaler
Reference

33. Scalability: Vertical Pods Autoscaler
Reference

34. Scalability: Cluster Autoscaler
Reference

35. Appropriate Types of Applications
Stateless Stateful
Setup
Scale Out/Up
Backup
Upgrade
Operation

36. K8s Log Management
Reference

37. Morning W/ Prometheus Operator
Reference

38. Multi-Cluster Monitoring
Reference

39. Security and Update Management
Network Policy
RBAC
Image Scan
Version Upgrade
Logging/Monitoring

40. Common Issues No.1
● Configuration Errors
● Resource Constraints
● Dependency Issues
● Application Errors
Reference

41. Common Issues No.2
● Wrong Image Name
● Wrong Image Tag
● Network Problem or Image Repo
Not Available
● Pulling From a Private Registry But
Not imagePullSecret was Provided
Reference

42. Common Issues No.3
● Scheduling Issues
● Image Issues
● Dependency issues
Reference

43. Certificate VS. On-the-job training

44. Any Question?