This document discusses using Docker and Kubernetes for microservice deployment through continuous integration and continuous delivery (CI/CD) pipelines. It describes building Docker images, pushing them to a registry, and deploying them to Kubernetes through tools like Wercker to automate the deployment process. Steps, pipelines, and workflows are defined in a Wercker YAML configuration file to orchestrate the automated build, test, and deployment of code changes.

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2nd Ground
Breakers
MeetupHands On:
CI/CD 기반의 Microservice 배포
이동희(DongHee Lee)
Principal Solution Engineer
Oracle Korea Solution Engineering

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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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