This presentation will introduce you to Container, Docker, and Kubernetes with a live demo. This also explains Kubernetes basic concepts such as Pod, Deployment, Service, Ingress, and Rolling Update. Facebook Live: https://www.facebook.com/imcinstitute/videos/4199946253380670 Youtube Recorded: https://youtu.be/vW1Yq5ftWZ4 IMC Live Webinar on July 17, 2020

1. Jirayut Nimsaeng
GDE Cloud Bangkok
Founder & CEO
Opsta (Thailand) Co.,Ltd.
Introduction to
Kubernetes with Demo

2. Jirayut Nimsaeng
Speaker
● Founder & CEO,
Opsta (Thailand) Co.,Ltd.
● GDE Cloud Bangkok
● DevSecOps Transformation
Consultant
● First Certified Kubernetes
Administrator (CKA) in Thailand

3. ● Cloud and Service Model
● Virtual Machine, Container and Docker
● What is Kubernetes?
● Kubernetes Architecture
● Google Kubernetes Engine (GKE) and Benefits
● Kubernetes Basic Concept
Agenda

4. Modern Infrastructure
Cloud

5. Cloud as a Service Model
Future

6. Virtual Machine, Container, Docker
VMs are an infrastructure
level construct to turn one
machine into many servers
Containers are an app level
construct

7. VM and Container Together

8. Build, Ship, Run
Developers IT Operations
BUILD
Development Environments
SHIP
Secure Content & Collaboration
RUN
Deploy, Manage, Scale
Registry
Control plane
Multi-container
appsEngines running on
servers in cloud or
datacenter
Images stored
in repos
Clients pull and
push images

9. Docker on one server
Node
Container

10. Multiple servers?
Node
Container
Node Node
???

11. ● Kubernetes, in Greek, means the Helmsman, or pilot of the ship
● It is 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
What is Kubernetes?

12. ● 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
Kubernetes Key Features

13. Kubernetes Architecture
https://thenewstack.io/kubernetes-an-overview/

14. Kubernetes Platform
https://landscape.cncf.io

15. Google Kubernetes Engine (GKE) provides a managed
environment for deploying, managing, and scaling your
containerized applications using Google
infrastructure. The GKE environment consists of
multiple machines (specifically, Compute Engine
instances) grouped together to form a cluster.
Google Kubernetes Engine (GKE)

16. ● Single click / command to create high availability cluster
● Easy scaling
● Automatic scaling
● Easy upgrade
● Security Features
● Global load balancing
● Dashboard
● Logging and Monitoring
Benefits of GKE

17. ● Manifest File
● Pod
● Deployment
● Service
● Ingress
● Namespace
● Rolling Update
Kubernetes Basic Concept

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

19. Pod
● Logical Application
○ One or more containers
and volumes
○ Shared namespaces
○ One IP per pod
Pod
nginx
application
NFSiSCSIGCE
10.10.1.100

20. Deployment
Drive current state towards desired state
app: hello
replicas: 1
Node1
Pod
hello
Node2 Node3 Node4

21. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2 Node3 Node4

22. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2
Pod
hello
Node3
Pod
hello
Node4

23. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2
Pod
hello
Node3 Node4

24. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2
Pod
hello
Node3 Node4
Pod
hello

25. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2
Pod
hello
Node3 Node4

26. Deployment
Drive current state towards desired state
app: hello
replicas: 3
Node1
Pod
hello
Node2
Pod
hello
Node3 Node4
Pod
hello

27. Service
Pod
hello
Service
Pod
hello
Pod
hello

28. Service Type
Devices
Cloud Load
Balancer with
Public IP
Node 3Node 2Node 1
Service A Type=LoadBalancer
App A
Pod 1
App A
Pod 2
App A
Pod 3
DB
Pod 1
Port 31752 Port 31752 Port 31752
Port 80, 443
Service DB Type=ClusterIP

29. Ingress
Devices
Cloud Load
Balancer with
Public IP
Node 3Node 2
Service B Type=ClusterIP
Node 1
Service Ingress Type=LoadBalancer
Ingress Controller
Service 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

30. Namespace
Namespace B
Deployment
Namespace A
Deployment
Pod
hello
Service
Pod
hello
Pod
hello
Pod
hello
Service
Pod
hello
Pod
hello

31. Rolling Update
Node1 Node3Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1

32. Rolling Update
Node1 Node3Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

33. Rolling Update
Node1 Node3Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

34. Rolling Update
Node1 Node3Node2
ghost
Pod
app v1
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

35. Rolling Update
Node1 Node3Node2
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2

36. Rolling Update
Node1 Node3Node2
Service
ghost
Pod
app v1
Pod
app v1
Pod
app v2
Pod
app v2

37. Rolling Update
Node1 Node3Node2
Service
Pod
app v1
Pod
app v2
Pod
app v2

38. Rolling Update
Node1 Node3Node2
Service
Pod
app v1
Pod
app v2
Pod
app v2
Pod
app v2

39. Rolling Update
Node1 Node3Node2
Service
Pod
app v2
Pod
app v2
Pod
app v2

40. ● ConfigMap
● Secret
● Job
● CronJob
● StatefulSet
● Persistent Volume
There’s a lot to learn
● HealthCheck
● LimitResource
● NetworkPolicy
● AutoScaling
● Helm
● Operator

41. Opsta DevSecOps Platform
Developer
Infrastructure
& IaC
Support
Tools
VCS
Artifacts
CI CD
Dev
Test
Prod Monitoring
Load Testing
Security

42. Jirayut Nimsaeng
GDE Cloud Bangkok
Founder & CEO
Opsta (Thailand) Co.,Ltd.
jirayut@opsta.co.th
fb.me/winggundamth
Q & A

43. Backup Slides

44. ● Application consists of:
○ Deployment
○ Service
○ Ingress
○ Configmap
○ Secret
○ Etc.
● More effort for operate and difficult control environment values
● Hard to manage release (Rollback, Rollout, History)
● Hard to reuse configuration template cause specification environment
Problem with Manifest File

45. Helm is the package manager for Kubernetes
Helm

46. ● Helm Charts helps you define, install, and upgrade
● Charts are easy to create, version, share, and publish
● Public Helm Charts are at https://hub.kubeapps.com
Helm Charts