Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Helm Chart を Unit Test する / Unit Testing Helm C...
Search
d-kuro
June 24, 2021
Programming
0
2.2k
Helm Chart を Unit Test する / Unit Testing Helm Chart
Kubernetes Meetup Tokyo #42 で発表したスライドです
https://k8sjp.connpass.com/event/214286/
d-kuro
June 24, 2021
Tweet
Share
More Decks by d-kuro
See All by d-kuro
Giftech2025春_GhostWriter
daikurosawa
0
10
kube-state-metrics Sharding
daikurosawa
0
360
Understanding CPU throttling in Kubernetes to improve application performance #k8sjp
daikurosawa
12
15k
Leader Election in Kubernetes #k8sjp
daikurosawa
5
11k
Argo CD 実践ガイド #k8sjp / Argo CD Practice Guide
daikurosawa
13
8.7k
図で理解する Descheduler #k8sjp #ymju / Introduction to Descheduler
daikurosawa
12
23k
Kubernetes のソースコードとの付き合い方 #gounco / Kubernetes source code reading
daikurosawa
24
5.3k
GolangCI を使ってコードの品質を保ちながら快適な Golang 生活を送る話 #gounco / GolangCI
daikurosawa
4
6k
Introduction gRPC
daikurosawa
1
290
Other Decks in Programming
See All in Programming
ソフトウェア設計の実践的な考え方
masuda220
PRO
3
490
NetworkXとGNNで学ぶグラフデータ分析入門〜複雑な関係性を解き明かすPythonの力〜
mhrtech
3
1k
なぜGoのジェネリクスはこの形なのか? Featherweight Goが明かす設計の核心
ryotaros
7
1k
10年もののAPIサーバーにおけるCI/CDの改善の奮闘
mbook
0
780
CI_CD「健康診断」のススメ。現場でのボトルネック特定から、健康診断を通じた組織的な改善手法
teamlab
PRO
0
180
CSC509 Lecture 01
javiergs
PRO
1
430
Your Perfect Project Setup for Angular @BASTA! 2025 in Mainz
manfredsteyer
PRO
0
130
CSC305 Lecture 04
javiergs
PRO
0
260
Conquering Massive Traffic Spikes in Ruby Applications with Pitchfork
riseshia
0
150
CSC509 Lecture 06
javiergs
PRO
0
240
Building, Deploying, and Monitoring Ruby Web Applications with Falcon (Kaigi on Rails 2025)
ioquatix
1
150
LLMとPlaywright/reg-suitを活用した jQueryリファクタリングの実際
kinocoboy2
4
670
Featured
See All Featured
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
127
53k
Building an army of robots
kneath
306
46k
Six Lessons from altMBA
skipperchong
28
4k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
Principles of Awesome APIs and How to Build Them.
keavy
127
17k
Context Engineering - Making Every Token Count
addyosmani
5
190
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Site-Speed That Sticks
csswizardry
11
880
Balancing Empowerment & Direction
lara
4
680
Testing 201, or: Great Expectations
jmmastey
45
7.7k
Transcript
Chart Λ Unit Test ͢Δ Kubernetes Meetup Tokyo #42 LT
I work for @ponde_m @d-kuro
Summary • Helm Chart ͷ Test ʹ͍ͭͯ • Helm Chart
Λ Unit Test ͢ΔͨΊͷϥΠϒϥϦΛ࣮ͨ͠ • ࣮ͷৄࡉ • “k8s.io” ϥΠϒϥϦΛͬͨ Tips ͷհ
Testing Helm Charts --set autoscaling.enabled=false --set replicaCount=3
Testing Helm Charts • Helm ʹςετػߏ͕ଘࡏ͢Δ • “helm.sh/hook: test” annotation
Λ༩ͨ͠ Pod ఆٛΛ༻ҙ͢Δ • “<chart-name>/templates/tests/“ ʹஔ͢Δ • “helm install” ͨ͋͠ͱʹ “helm test” Λ࣮ߦ͢Δ • Pod ͕ exit 0 Ͱऴྃ͢Εςετ͕ޭͨ͠ͱΈͳ͞ΕΔ
None
None
Testing Helm Charts • ͜ͷςετػߏͲͪΒ͔ͱ͍͑ Integration Test • values.yaml ʹఆٛͨ͠
Option ͕ҙਤͨ͠௨Γʹػೳ͢Δ͔ Ͳ͏͔ͳͲͷ Unit Test Ϩϕϧͷ֬ೝ͕͔ͨͬͨ͠
Unit Testing Helm Charts • Go Ͱ Helm Chart Λ
Unit Test ͢Δ • “helm.sh/helm/v3” Λ import ͯ͠ “helm template” ίϚϯυͰ༻͍ͯ͠ΔؔΛݺͼग़͢ • ϨϯμϦϯά͞Εͨ YAML ͕ string Ͱ͑ΔͷͰ ͍͍ײ͡ʹൺֱ͢Δ
Unit Testing Helm Charts • ࡞ͨ͠ϥΠϒϥϦ • github.com/d-kuro/helmut • “helm
template” ίϚϯυ૬ͷॲཧΛ࣮ߦ͢ΔϥΠϒϥϦ • Assert ༻ͷؔΛఏڙ • github.com/google/go-cmp Λ༻ͨ͠ diff Λදࣔ͢Δ
None
None
None
Unit Testing Helm Charts • ྨࣅͷϥΠϒϥϦ • github.com/gruntwork-io/terratest/modules/helm • ෦Ͱ
“helm tempalte —show-only” ίϚϯυΛ࣮ߦ͍ͯ͠Δ • github.com/Waterdrips/helmunit • Helm ͷύοέʔδΛ import ͢Δಉ༷ͷΞϓϩʔν • Assert ؔͳͲͳ͍
Architecture map[ObjectKey]runtime.Object Rendered Manifests Exec helm template Render Convert Get
User
Exec helm template
None
Split Manifests
None
Convert from Raw Manifest to runtime.Object
None
Assert • ݱࡏ Contains ͔࣮͍ؔͯ͠͠ͳ͍ • Contains ؔʹ͞Εͨ Object Λ
map ͔Β Get ͯ͠ google/go-cmp Ͱൺֱͯ͠ߏମͷ diff Λදࣔ͢Δ • runtime.Object Λ͢ํ๏ͱ YAML or JSON ͷ Manifest Λ͢ํ๏ͷ 2 ͭΛఏڙ • ͢ runtime.Object ͷ TypeMeta ۭͳΒಈతʹઃఆ
TypeMeta ͷهड़͕ෆཁʹͳΔ
Get GVK from runtime.Object
None
Assert • Helm ʹΑ͘ΘΕΔ label annotation ͳͲͷ ࠩΛແࢹ͢ΔͨΊͷ
Option Λఏڙ
Omit Metadata
None
Conclude • Helm Chart Λ Unit Test ͢ΔͨΊͷϥΠϒϥϦΛ࡞ͬͨ • github.com/d-kuro/helmut
• ྑ͚Ε͍ͬͯͩ͘͞
Thank You for Listening