This document discusses using Wercker to automate continuous delivery of microservices to Kubernetes. It provides an overview of how Wercker can be configured using a wercker.yml file to define steps, pipelines, and workflows. The hands-on portion involves using Wercker to build a Docker image from code, push it to a registry, and deploy it to Kubernetes on Oracle Cloud Infrastructure.

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9th Oracle
Developer
MeetupHands On:
CI/CD 기반의 Microservice 배포
이동희(DongHee Lee)
Principal Solution Engineer
Oracle Korea Solution Engineering

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The following is intended to outline our general product direction. It is intended for
information purposes only, and may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality, and should not be relied upon
in making purchasing decisions. The development, release, timing, and pricing of any
features or functionality described for Oracle’s products may change and remains at the
sole discretion of Oracle Corporation.
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Container Native Application Development
Docker Image Docker Registry KubernetesCI/CDSource
ReleaseCI/CDSource Server
APP > deploy

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Docker & Kubernetes를 통한 배포과정
Microservice 배포
4
Image를
Registry에 Push
6
Kubernetes에
배포
7
Image를 가져와서
Kubernetes 내 Container 기동
Registry
Image
Local
Development
1
코드 개발
후 코드 Push
개발자
2
Docker Client
Image Build 3
Docker Client
Image Push
5
kubectl로
Kubernetes에 배포
Docker
kubectl

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CI/CD를 통한 자동화
Microservice 배포
1
코드 개발
후 코드 Push
2
CI Tool
빌드 후 Image 생성
3
Image를
Registry에 Push
4
Kubernetes에
배포
5
Image를 가져와서
Kubernetes 내 Container 기동
개발자
Registry
CI/CD Tool을 이용한 자동화

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CI/CD를 통한 자동화
Microservice 배포
1
코드 개발
후 코드 Push
2
Wercker
빌드 후 Image 생성
3
Image를
Registry에 Push
4
Kubernetes에
배포
5
Image를 가져와서
Kubernetes 내 Container 기동
개발자
OCI
Registry
OCI
Container Engine
for Kubernetes
(OKE)
Wercker 서비스를 이용한 Workflow 자동화

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“Docker-based continuous delivery platform
that helps software developers build and
deploy their applications and microservices.
– From Wikipedia, the free encyclopedia
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Wercker 구성
Step Pipeline Workflow
소스 루트위치에
wercker.yml
파일로 정의함

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Wercker 구성
Step Pipeline Workflow
wercker.yml
Step: 실행할 하나의 개별 Command
- internal steps: Docker Container 연계용
- script steps: shell 수행
- custom steps: 특정한 요구를 위해 만든 step

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Wercker 구성
Step Pipeline Workflow
Pipeline: 하나 이상의 Step으로 이루어진 일련의
Command
wercker.yml

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Wercker 구성
Step Pipeline Workflow
Workflow: 빌드에서 배포까지의 자동화된 흐름
wercker.yml에 정의된 Pipeline들을
순차 또는 병렬로 실행한 순서
wercker.yml

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Wercker 구성
Step Pipeline Workflow
wercker.yml
box:
Wercker가 Workflow 수행시 사용할
Docker Base Image 명시

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Wercker 구성
Step Pipeline Workflow
• Internal Step
• Install Packages Step
• Script Step
• After Step
• internal/docker-push
• internal/docker-scratch-push
• internal/store-container
• internal/watch
• internal/shell

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Wercker 구성
Step Pipeline Workflow
• Internal Step
• Install Packages Step
• Script Step
• After Step

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Wercker 구성
Step Pipeline Workflow
• Internal Step
• Install Packages Step
• Script Step
• After Step

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Wercker 구성
Step Pipeline Workflow
• Internal Step
• Install Packages Step
• Script Step
• After Step
after-steps:
파이프라인의 이전 step의 실패 또는
성공시 항상 실행됨.
- HipChat after step
- Slack after step

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Wercker Steps Store: Step 만들기

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Hands-on
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실습 시나리오
1
코드 개발
후 코드 Push
2
Wercker
빌드 후 Image 생성
3
Image를
Registry에 Push
4
Kubernetes에
배포
5
Image를 가져와서
Kubernetes 내 Container 기동
개발자
Wercker 서비스를 이용한 Workflow 자동화
OCI
Registry
OCI
Container Engine
for Kubernetes
(OKE)

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실습 환경
• 사전준비 사항
– GitHub 계정
– Wercker 계정
• GitHub 계정으로 만들면 됩니다.
– Oracle Cloud Trial
• 실습 가이드
– https://github.com/TheKoguryo/OKEwithWercker.v1.1
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