The document outlines a hands-on workshop conducted by William Yeh on Kubernetes, emphasizing its application in cloud environments through a series of practical labs. Each lab focuses on different aspects of Kubernetes, including setup, containerization, deployment, and service management. The document also provides links to resources and references for further learning in Kubernetes and container technologies.

1. Technical Manager
William Yeh 葉秉哲
給 RD 的 Kubernetes 初體驗
… with a series of hands-on labs
2019-08-11

2. • PhD in Computer Science, NCTU, Taiwan
• CSPO (Certified Scrum Product Owner) from Scrum Alliance
• PSM I (Professional Scrum Master I) from Scrum.org
• Technical manager @ Titansoft (since Mar 2019)
• Server director & Scrum master @ Gogolook
• Active speaker and trainer for software
architecture, DevOps, agile, and theory of
constraints

3. Containers
Kubernetes
Cloud
Agenda

4. Containers
Kubernetes
Cloud
Agenda Labs
1.0 — 3.0
4.0 — 5.0
6.0 — 7.0

5. Agenda
Know promising trends
Adopt gradually
Prepare mindset
Goals
Containers
Kubernetes
Cloud
Labs
1.0 — 3.0
4.0 — 5.0
6.0 — 7.0

6. GKE Setup🅐
a - Redeem Google Cloud coupon
b - Create project in GCP
c - Create GKE cluster

7. Redeem coupon
Please follow steps in your handout
NOW!

8. Create K8s-enabled Project
https://console.cloud.google.com/projectselector2/kuber
netes
Should already done
before you’re here...

9. Create GKE cluster
gcloud config set project PROJECT_ID
gcloud config set compute/zone us-west1-a
gcloud container clusters create k8s201908
--num-nodes 3

10. Lab Setting��
Tag
1.0
2.0
3.0
4.0
5.0
6.0
7.0

11. Lab material
See the demo first!

12. Lab material
For each revision, pay attention to:
1. image versions
2. diff in code and configuration
Use git diff --stat HEAD~1 HEAD
to see diff between revisions.
Tag
1.0
2.0
3.0
4.0
5.0
6.0
7.0

13. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

14. Lab material
https://github.com/William-Yeh/workshop-k8s201908
or http://bit.ly/k8s-201908 for short
1. Open browser
2. Git clone to your laptop

15. Containers
1.0 - Legacy
2.0 - Docker
3.0 - Frontend/backend separation
��

16. Why containers?

17. Lab # 1.0 Legacy

18. Lab # 1.0
git checkout 1.0
git log

19. Lab # 1.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

20. app
runtime
OS kernel
app
runtime
OS kernel
Boundary of application packaging:
pros and cons
traditional deployment way
virtual machine

21. app
runtime
OS kernel
app
runtime
OS kernel
app
runtime
OS kernel
IaC (Infra as Code)
traditional deployment way
IaC tools
● Chef
● Puppet
● Ansible
virtual machine

22. app
runtime
OS kernel
app
runtime
OS kernel
app
runtime
OS kernel
Containers as application packaging
units
traditional deployment way
container
virtual machine

23. Lab # 2.0 Docker

24. Lab # 2.0
git checkout 2.0
git log
git diff --stat HEAD~1 HEAD

25. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

26. Lab # 2.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

27. Lab # 3.0 Frontend/backend separation

28. Lab # 3.0
git checkout 3.0
git log
git diff --stat HEAD~1 HEAD

29. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

30. app
runtime
OS kernel
app
runtime
OS kernel
app
runtime
OS kernel
Recap:
containers as application packaging units
traditional deployment way
container
virtual machine

31. Lab # 3.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

32. Kubernetes
4.0 - Local Kubernetes
5.0 - Configuration
��

33. https://kubernetes.io/

34. Lab # 4.0 Local Kubernetes

35. Lab # 4.0
git checkout 4.0
git log
git diff --stat HEAD~1 HEAD

36. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

37. Concept gaps
from Docker to Kubernetes

38. Container

39. Service
container
service
pod
deployment 3

40. container
service
.
.
.
└── k8s
├── todoapi-service.yml
└── todofrontend-service.yml
Service

41. Service
container
service
pod
deployment
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0
k8s/todoapi-service.yml

42. service
deployment
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0
k8s/todoapi-service.yml

43. container
pod
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0

44. Container

45. Pod
Container
Any examples?

46. • Shared volumes
• IPC
• Network
Multi-Container Pods in Kubernetes
Pod
Container
Multi-container pods and container communication in Kubernetes
https://www.mirantis.com/blog/multi-container-pods-and-container-communication-in-kubernetes/

47. Deployment & Replica
3

48. pod
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0
deployment

49. Selector & label
3
The selector field defines
how the Deployment finds
which Pods to manage.
label
selector

50. service
deployment
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0

51. Service
label
selector
3
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0

52. Recap

53. Service
container
pod
deployment
service
3

54. Service
container
service
pod
deployment
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0
k8s/todoapi-service.yml

55. pod
---
kind: Service
...
---
kind: Deployment
...
spec:
replicas: 3
template: # pod definition
spec:
containers:
- name: todoapi
image: todoapi:3.0
deployment
service
container

56. Kubernetes
Terminology
Learn by doing!

57. Make sure you’re using local Kubernetes
kubectl config view
kubectl config get-contexts
kubectl config use-context docker-for-desktop
or
kubectl config use-context minikube
How to use kubectl to manage multiple Kubernetes clusters
https://success.docker.com/article/how-to-use-kubectl-to-manage-multiple-kubernetes-clusters

58. Lab # 4.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

59. CAUTION
● There’s one big issue in this Lab 4.0
Can you see?
● What if a image changes
but version tag remains unchanged?

60. Lab # 5.0 Configuration

61. Lab # 5.0
git checkout 5.0
git log
git diff --stat HEAD~1 HEAD

62. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

63. _v2
Service
container
pod
deployment
service
Recap:
containers as application packaging units
3

64. Lab # 5.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

65. Cloud
6.0 - Cloud (GKE for example)
7.0 - Canary release
��

66. Lab # 6.0 Cloud (GKE for example)

67. Lab # 6.0
git checkout 6.0
git log
git diff --stat HEAD~1 HEAD

68. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

69. Local/cloud diff -
k8s/***/config.***.yml

70. Local/cloud diff -
k8s/***/todoapi-service.yml

71. Local/cloud diff -
k8s/***/todoapi-service.yml

72. Local/cloud diff -
k8s/***/todofrontend-service.yml

73. Local/cloud diff -
k8s/***/todofrontend-service.yml

74. Skaffold
skaffold.yaml
cloud
local

75. Lab # 6.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

76. Lab # 7.0 Canary release

77. Lab # 7.0
git checkout 7.0
git log
git diff --stat HEAD~1 HEAD

78. Image tags
Lab # Frontend API
1.0 N/A N/A
2.0 N/A 2.0
3.0 3.0 3.0
4.0 3.0 3.0
5.0 5.0 3.0
6.0 auto auto
7.0 auto auto & stable

79. _v2
1
stable autoimage tag:
3

80. Stable/canary diff -
k8s/***/todoapi-***.yml

81. _v2
Service
label
label
1
selector
stable autoimage tag:
3

82. Lab # 7.0 Review
a. Architecture
b. Main tasks
c. Diff
d. Tricks
e. Questions?

83. Conclusion��

84. app
runtime
OS kernel
app
runtime
OS kernel
app
runtime
OS kernel
Recap:
containers as application packaging units
traditional deployment way
container
virtual machine

85. _v2
Service
container
pod
deployment
service
label
label
3
selector

86. Agenda
Know promising trends
Adopt gradually
Prepare mindset
Goals
Containers
Kubernetes
Cloud
Labs
1.0 — 3.0
4.0 — 5.0
6.0 — 7.0

87. Kubernetes
Terminology
“Kubernetes 101: Pods, Nodes, Containers,
and Clusters”
• Author: Daniel Sanche
• Date: 2018-01-02
• URL:
https://medium.com/google-cloud/kubernetes-101-pods-nodes-c
ontainers-and-clusters-c1509e409e16
(or http://bit.ly/post-k8s-101 for short)

88. Not told today
Session affinity
https://medium.com/@diegomrtnzg/redirect-your-users-to-the-same-pod
-by-using-session-affinity-on-kubernetes-baebf6a1733b
StatefulSet
https://godleon.github.io/blog/Kubernetes/k8s-StatefulSets-Overview
/
Persistent Volume & Claim
https://godleon.github.io/blog/Kubernetes/k8s-PersistentVolume-Over
view/

89. Next step?
https://www.udemy.com/course/certified-kubernetes-application-developer/

90. Questions?

91. Attribution
● review by Alina Oleynik from the Noun Project