🏭 11. Helm 차트

  Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
  

  choco install kubernetes-helm
  

  # helm 다운로드
curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3

# 실행권한 변경
chmod 700 get_helm.sh

# helm 설치
./get_helm.sh

# 버전 확인
helm version

# Helm Repository 추가
helm repo add stable https://charts.helm.sh/stable

# Repository 업데이트 
helm repo update
  

  brew install helm
  

  helm search repo stable/mysql

NAME                CHART VERSION    APP VERSION    DESCRIPTION
stable/mysql        1.6.3            5.7.28         Fast, reliable, scalable, and easy to use open-...
stable/mysqldump    2.6.0            2.4.1          A Helm chart to help backup MySQL databases usi...
  

  helm show chart stable/mysql

apiVersion: v1
appVersion: 5.7.28
description: Fast, reliable, scalable, and easy to use open-source relational database
  system.
home: https://www.mysql.com/
icon: https://www.mysql.com/common/logos/logo-mysql-170x115.png
keywords:
- mysql
- database
- sql
maintainers:
- email: o.with@sportradar.com
  name: olemarkus
- email: viglesias@google.com
  name: viglesiasce
name: mysql
sources:
- https://github.com/kubernetes/charts
- https://github.com/docker-library/mysql
version: 1.6.3
  

  helm install mysql stable/mysql 

AME: mysql-1588321002
LAST DEPLOYED: Fri May  1 08:16:55 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
MySQL can be accessed via port 3306 on the following DNS name from within your cluster:
mysql-1588321002.default.svc.cluster.local

To get your root password run:

    MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace default mysql -o jsonpath="{.data.mysql-root-password}" | base64 --decode; echo)

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To connect to your database:

1. Run an Ubuntu pod that you can use as a client:

    kubectl run -i --tty ubuntu --image=ubuntu:16.04 --restart=Never -- bash -il

2. Install the mysql client:

    $ apt-get update && apt-get install mysql-client -y

3. Connect using the mysql cli, then provide your password:
    $ mysql -h mysql -p

To connect to your database directly from outside the K8s cluster:
    MYSQL_HOST=127.0.0.1
    MYSQL_PORT=3306

    # Execute the following command to route the connection:
    kubectl port-forward svc/mysql-1588321002 3306

    mysql -h ${MYSQL_HOST} -P${MYSQL_PORT} -u root -p${MYSQL_ROOT_PASSWORD}
  

  helm ls

NAME                    NAMESPACE       REVISION        UPDATED                                 STATUS         C
HART            APP VERSION
mysql-1588321701        default         1               2020-05-01 17:28:25.322363879 +0900 +09 deployed       m
ysql-1.6.3      5.7.28
  

  heml list

NAME                    NAMESPACE       REVISION        UPDATED                                 STATUS         C
HART            APP VERSION
mysql-1588321701        default         1               2020-05-01 17:28:25.322363879 +0900 +09 deployed       m
ysql-1.6.3      5.7.28


helm uninstall mysql-1588321701
release "mysql-1588321701" uninstalled
  

  helm create nginxstd
  

  apiVersion: v2
name: nginx-std
description: A Helm chart for Kubernetes
type: application
version: 0.1.0
appVersion: "1.16.0"
  

  apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Values.container.name }}
spec:
  replicas: {{ .Values.replicas }}
  selector:
    matchLabels:
      app: {{ .Values.container.name }}
  template:
    metadata:
      labels:
        app: {{ .Values.container.name }}
        environment: {{ .Values.environment }}
    spec:
      containers:
        - name: {{ .Values.container.name }}
          image: {{ .Values.container.image }}:{{ .Values.container.tag }}
          ports:
            - containerPort: {{ .Values.container.port }}
          env:
            - name: environment
              value: {{ .Values.environment }}
  

  apiVersion: v1
kind: Service
metadata:
  name: {{ .Values.container.name }}-service
  labels:
    app: {{ .Values.container.name }}
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: {{ .Values.container.port }}
  selector:
    app: {{ .Values.container.name }}
  type: LoadBalancer
  

  environment: development
container:
  name: nginx
  port: 80
  image: nginx
  tag: latest
replicas: 2
  

  helm install nginxstd ./nginxstd
  

  # 확인
kubectl get all
helm list

# 삭제 
helm uninstall nginxstd
  

  helm package ./nginxstd

mkdir prod

mv ./nginx-std-0.1.0.tgz ./prod/
  

  # 리포지토리 파일 생성 (index.yaml)
heml repo index ./prod

# 파일 생성 확인
cat ./prod/index.yaml
  

  cd prod

git init

git add .

git brancb -m main 

git commit -a -m "initial commit"

git remote add origin https://github.com/dangtong76/helm-prod.git

git push origin main
  

  helm repo add helm-prod https://dangtong76.github.io/helm-prod
  

  helm repo list

helm search repo nginx
  

  helm search repo redis

helm fetch stable/redis -d ./prod
  

  helm repo index ./prod
  

  git status

git add .

git commit -a -m "add redis"

git push origin master
  

  helm repo update

helm search repo redis
  

  helm list

helm install nginxstd helm-prod/nginx-std
# 또는 
helm install helm-prod/nginx-std --generate-name

#확인
helm status nginxstd
kubectl get all 
  

  environment: development
replicas: 4
  

  helm upgrade -f ./nginxstd/stage-values.yaml nginxstd helm-prod/nginx-std
  

  helm history
  

  helm rollback nginxstd 1
  

  helm history nginxstd

helm helm status nginxstd

kubectl get po 
  

  helm show values helm-prod/nginx-std

environment: development
container:
  name: nginx
  port: 80
  image: nginx:1.7.9
  tag: hello
replicas: 2
  

  helm upgrade --set replicas=4 --set environment=dev nginxstd helm-prod/nginx-std
  

  helm history

helm status nginxstd

kubectl get po
  

  helm uninstall nginxstd