- What is Kubernetes - Why we need Kubernetes - Demo how to deploy application on Kubernetes Jirayut Nimsaeng Founder & CEO Opsta (Thailand) Co., Ltd. Facebook Record: https://www.facebook.com/ThaiProgrammerSociety/videos/1908659749331066 Coder Live with Thai Programmer Association June 6, 2022

1. Jirayut Nimsaeng (Dear)
CEO & Founder, Opsta (Thailand) Co.,Ltd.
Coder Live with Thai Programmer Association
June 6, 2022
How to deploy
application on

2. How to deploy application on Kubernetes
Instructor
Jirayut Nimsaeng (Dear)
Jirayut has been involved in DevSecOps, Container, Cloud Technology
and Open Source for over 10 years. He has experienced and
succeeded in transforming several companies to deliver greater
values and be more agile.
● He is Founder and CEO of Opsta (Thailand) Co.,Ltd.
● He is Cloud/DevSecOps Transformation Consultant and
Solution Architecture
● He is the first Certified Kubernetes Administrator (CKA) and
Certified Kubernetes Security Specialist (CKS) in Thailand
● He is first Thai Google Cloud Developer Expert (GDE) in
Thailand
● Google Cloud Certified - Professional Cloud Architect and
Associate Cloud Engineer

3. How to deploy application on Kubernetes
Introduction to
Kubernetes

4. How to deploy application on Kubernetes
One Server
Node
Container

5. How to deploy application on Kubernetes
Multiple Servers
Node1 Node2 Node3
Container
???

6. How to deploy application on Kubernetes
What is Kubernetes?
● Kubernetes, in Greek, means the Helmsman, or pilot of the ship, pilot
of a ship of containers
● Kubernetes is a software written in Go for automating deployment,
scaling, and management of containerized applications
● Focus on manage applications, not machines
● Open source, open API container orchestrator
● Supports multiple cloud and bare-metal environments
● Inspired and informed by 15 years of Google’s experiences and internal
systems

7. How to deploy application on Kubernetes
Kubernetes Key Features
● Automatic bin packing
● Self-healing
● Horizontal manual/auto-scaling
● Service discovery & load balancing
● Automated rollouts and rollbacks
● Secret and configuration management
● Storage orchestration
● Batch execution

8. How to deploy application on Kubernetes
Kubernetes Architecture

9. How to deploy application on Kubernetes
Kubernetes Detail Architecture

10. How to deploy application on Kubernetes
Kubernetes
Pod and Deployment

11. How to deploy application on Kubernetes
Pods
Logical Application
● One or more containers
and volumes
● Shared namespaces
● One IP per pod
Pod
nginx
monolith
NFS
iSCSI
GCE
10.10.1.100

12. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 1
Node4

13. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4

14. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4
Pod
hello
Pod
hello

15. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4
Pod
hello

16. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4
Pod
hello
Pod
hello

17. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4
Pod
hello

18. How to deploy application on Kubernetes
Deployments
Drive current state towards desired state
Node1 Node2 Node3
Pod
hello
app: hello
replicas: 3
Node4
Pod
hello
Pod
hello

19. How to deploy application on Kubernetes
Kubernetes
Service

20. How to deploy application on Kubernetes
Services
Pod
hello
Service
Pod
hello
Pod
hello

21. How to deploy application on Kubernetes
Kubernetes
Ingress

22. How to deploy application on Kubernetes
Service Type: Ingress (1)
Devices
Node 3
Node 2
Service: app-b Type=ClusterIP
Node 1
Service: app-a Type=ClusterIP
App-A
Pod 1
App-B
Pod 1
App-A
Pod 2
App-A
Pod 3
App-B
Pod 2
App-B
Pod 3
apiVersion: v1
kind: Service
metadata:
name: app-a
spec:
selector:
app: App-A
ports:
- protocol: TCP
port: 8080
targetPort: 8080
type: ClusterIP

23. How to deploy application on Kubernetes
Service Type: Ingress (2)
Devices
Cloud Load
Balancer with
Public IP
Node 3
Node 2
Service: app-b Type=ClusterIP
Node 1
Service Ingress Type=LoadBalancer
Ingress Controller
Service: app-a Type=ClusterIP
App-A
Pod 1
App-B
Pod 1
App-A
Pod 2
App-A
Pod 3
App-B
Pod 2
App-B
Pod 3
Port 31752 Port 31752 Port 31752
Port 80, 443 helm repo add ingress-nginx
https://kubernetes.github.io/ingress-nginx
helm install my-ingress ingress-nginx/ingress-nginx

24. How to deploy application on Kubernetes
Service Type: Ingress (3)
Devices
Cloud Load
Balancer with
Public IP
Node 3
Node 2
Service: app-b Type=ClusterIP
Node 1
Service Ingress Type=LoadBalancer
Ingress Controller
Service: app-a Type=ClusterIP
App-A
Pod 1
App-B
Pod 1
App-A
Pod 2
App-A
Pod 3
App-B
Pod 2
App-B
Pod 3
Ingress Resource
● foo.com - Service A
● bar.com - Service B
Port 31752 Port 31752 Port 31752
Port 80, 443
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-foo
spec:
rules:
- host: "foo.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: app-a
port:
number: 8080

25. How to deploy application on Kubernetes
Kubernetes
Namespace and
Rolling Update

26. How to deploy application on Kubernetes
Namespace
Namespace B
Deployment
Namespace A
Deployment
Pod
hello
Service
Pod
hello
Pod
hello
Pod
hello
Service
Pod
hello
Pod
hello

27. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1

28. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

29. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

30. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

31. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

32. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2
Pod
app v2

33. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
Service
Pod
app v1
Pod
app v2
Pod
app v2

34. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
Service
Pod
app v1
Pod
app v2
Pod
app v2
Pod
app v2

35. How to deploy application on Kubernetes
Rolling Update
Node1 Node3
Node2
Service
Pod
app v2
Pod
app v2
Pod
app v2

36. How to deploy application on Kubernetes
Kubernetes
Secrets & ConfigMaps

37. How to deploy application on Kubernetes
Kubernetes Secrets & ConfigMaps

38. How to deploy application on Kubernetes
Kubernetes Secrets & ConfigMaps Volume

39. How to deploy application on Kubernetes
Kubernetes
Manifest File

40. How to deploy application on Kubernetes
Kubernetes Manifest File
apiVersion: v1
kind: Pod
metadata:
name: busybox
namespace: default
spec:
containers:
- name: busybox
image: busybox
command:
- sleep
- "3600"
This is what called
Infrastructure as Code
(IaC)

41. How to deploy application on Kubernetes
Manifest Structure
Define resource APIs
Define resource kind
Define name of POD
Define metadata like
name, image and port of container(s)
Define toggle label of POD

42. How to deploy application on Kubernetes
Introduction to
Helm

43. How to deploy application on Kubernetes
Problem with K8s Manifest File
● 1 Microservice consist of:
○ Deployment
○ Service
○ Ingress
○ Configmap
○ Secret
○ Job (if needed)
● More effort for operate and difficult control environment values.
● Hard to manage release (Rollback, Rollout, history).
● Hard to reuse configuration template cause specification environment.

44. How to deploy application on Kubernetes
Kubernetes Deployment Pattern

45. How to deploy application on Kubernetes
Helm

46. How to deploy application on Kubernetes
Helm Charts
● Helm Charts helps you define, install, and upgrade
● Charts are easy to create, version, share, and publish
● Public Helm Charts are at https://artifacthub.io

47. How to deploy application on Kubernetes
Helm 3 Architecture

48. How to deploy application on Kubernetes
Deploy Application

49. How to deploy application on Kubernetes
Local Deployment
Developer
VCS
Local Development
1. Put code into Version Control
2. Improve code to be Twelve-Factor App
https://12factor.net
3. Build Docker Image to make it ready run
in container with Dockerfile
4. Develop docker-compose.yml to run
your application easier
5. Secure your application at the beginning
such as using secret and authentication
6. README.md can be your document

50. How to deploy application on Kubernetes
Kubernetes
Developer
Infrastructure
VCS
Artifacts
Dev
Test
Prod
Local Development
7. Push Docker Image to Private
Registry
8. Manual Deploy Application with
Kubernetes Manifest File
9. Convert Manifest to Helm Chart
10. Create Helm Value
11. Manual Deploy with Helm

51. How to deploy application on Kubernetes
More questions?
jirayut@opsta.co.th
Jirayut Nimsaeng
CEO & Founder
Opsta (Thailand)
086-069-4042
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