node_gitops

kubernetes configurations manifest repository for node-app(node_devops)

• reference
  • https://kangwoo.kr/2019/12/18/gitops-and-kubernetes/
    kustomize, devops/gitops 구성
  • https://kubernetes.io/ko/docs/tutorials/kubernetes-basics/create-cluster/cluster-intro/
    kubernetes minikube 구성
  • https://velog.io/@aylee5/Kubernetes-Argo-CD-%EC%84%A4%EC%B9%98-%EB%B0%8F-%EC%84%9C%EB%B9%84%EC%8A%A4-%EB%B0%B0%ED%8F%AC-GitOps
    https://argo-cd.readthedocs.io/en/stable/getting_started/
    ArgoCD Helm 설치 및 ArgoCD 설치 가이드

1. Kubernetes 구성

1. minikube 설치 및 구성

• 자신의 운영체제에 맞는 형식으로 minikube 설치

brew update && brew install minikube
minikube start

2. ArgoCD 설치

• 자신의 운영체제에 맞는 형식으로 helm 설치

brew update && brew install helm

• kubernetes namespace 생성

kubectl create namspace argo

• helm repository 추가 및 업데이트

helm repo add argo https://argoproj.github.io/argo-helm
helm repo update

• helm chart 받아오기 및 압축풀기

helm fetch argo/argo-cd
tar -xvzf argo-cd-${argo-cd version}.tgz
cd argo-cd

• ./argo-cd/values.yaml 파일 수정
  server.service.type : ClusterIP -> LoadBalancer
• argo-cd 설치

helm install argo -n argo argo/argo-cd -f values.yaml

• argo-cd cli 설치(optional)

brew install argocd

• 필요한 경우 port-foward를 이용하여 포트 변경

nohup kubectl port-forward service/argo-argocd-server -n argo ${원하는 포트}:${argo-argocd-server port(ex 443)} &

• 기본 비밀번호 가져오기

kubectl -n argo get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d && echo

• argo-cd 접속 후 admin, 기본 비밀번호 입력 후 로그인

2. gitops repository 구성

• https://github.com/questcollector/node_gitops

3. jenkins 구성(jenkins를 docker로 구성했을 경우)

• jenkins Dockerfile을 이용하여 kustomize 설치

FROM jenkins/jenkins:latest AS docker
USER root
RUN apt-get update && apt-get install -y lsb-release
RUN curl -fsSLo /usr/share/keyrings/docker-archive-keyring.asc \
  https://download.docker.com/linux/debian/gpg
RUN echo "deb [arch=$(dpkg --print-architecture) \
  signed-by=/usr/share/keyrings/docker-archive-keyring.asc] \
  https://download.docker.com/linux/debian \
  $(lsb_release -cs) stable" > /etc/apt/sources.list.d/docker.list
RUN apt-get update && apt-get install -y docker-ce-cli

FROM docker AS kustomize
WORKDIR /usr/bin/
RUN curl --silent --location --remote-name https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv4.4.1/kustomize_v4.4.1_linux_arm64.tar.gz
RUN tar -xzf kustomize_v4.4.1_linux_arm64.tar.gz

FROM kustomize AS jenkins
USER jenkins
RUN jenkins-plugin-cli --plugins "docker-workflow:1.26"

• devops repository의 Jenkinsfile 구성(Stage: Deploy to gitOps Repository)
  https://github.com/questcollector/node_devops/blob/master/Jenkinsfile

4. ArgoCD 새로운 앱 만들기

• 애플리케이션용 namespace 생성

kubectl create namspace node-app

• 앱 생성

Application Name: node-app
Project: default
SYNC POLICY: Automatic
Repository URL: https://github.com/questcollector/node_gitops.git
Revision: HEAD
Path: overlays/dev/
Cluster: https://kubernetes.default.svc
Namespace: node-app

5. minikube service open

nohup minikube service --url node-service -n node-app &