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
2.1k
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
5
kube-state-metrics Sharding
daikurosawa
0
350
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
8.6k
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
5.2k
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
280
Other Decks in Programming
See All in Programming
A full stack side project webapp all in Kotlin (KotlinConf 2025)
dankim
0
120
データの民主化を支える、透明性のあるデータ利活用への挑戦 2025-06-25 Database Engineering Meetup#7
y_ken
0
360
技術同人誌をMCP Serverにしてみた
74th
1
650
20250704_教育事業におけるアジャイルなデータ基盤構築
hanon52_
5
790
おやつのお供はお決まりですか?@WWDC25 Recap -Japan-\(region).swift
shingangan
0
140
AI時代のソフトウェア開発を考える(2025/07版) / Agentic Software Engineering Findy 2025-07 Edition
twada
PRO
87
29k
Result型で“失敗”を型にするPHPコードの書き方
kajitack
5
660
新メンバーも今日から大活躍!SREが支えるスケールし続ける組織のオンボーディング
honmarkhunt
5
7.4k
Python型ヒント完全ガイド 初心者でも分かる、現代的で実践的な使い方
mickey_kubo
1
120
イベントストーミング図からコードへの変換手順 / Procedure for Converting Event Storming Diagrams to Code
nrslib
2
820
High-Level Programming Languages in AI Era -Human Thought and Mind-
hayat01sh1da
PRO
0
780
NPOでのDevinの活用
codeforeveryone
0
840
Featured
See All Featured
Scaling GitHub
holman
460
140k
What’s in a name? Adding method to the madness
productmarketing
PRO
23
3.5k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
130
19k
Side Projects
sachag
455
42k
Being A Developer After 40
akosma
90
590k
Java REST API Framework Comparison - PWX 2021
mraible
31
8.7k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.3k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
44
2.4k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
48
2.9k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
20k
Docker and Python
trallard
44
3.5k
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