將環境變量獲取到 NGNIX react kubernetes pod

Question

我有一個 ngnix kubernetes pod，我需要將.env文件傳遞給它，但我無法讓它工作。

Pod 的 Docker 文件：

FROM node:12-alpine as build-step

RUN mkdir /app
WORKDIR /app
COPY package.json /app
RUN npm install
COPY . /app
RUN npm run build

FROM nginx:1.17.1-alpine
COPY --from=build-step /app/build /usr/share/nginx/html

我試過用 configmap 傳遞 env：

apiVersion: v1
kind: ConfigMap
metadata:
  name: test-front-app
data:
  ENV_TEST: "TEST"

並在Deployment傳遞env但都沒有奏效。

編輯部署文件：

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: test-front-app
  name: test-front-app
spec:
  replicas: 2
  selector:
    matchLabels:
      name: test-front-app
  template:
    metadata:
      labels:
        name: test-front-app
    spec:
      imagePullSecrets:
        - name: gcr-json-key
      containers:
      - name: front-test
        image: gcr.io/PROJECT_ID/IMAGE:TAG
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
        env:
          - name: TEST_ONE
            value: "test-value-one/"
        envFrom:
          - configMapRef:
              name: test-front-app

Answer 1

您的 ConfigMap test-front-app密鑰可以作為 env 訪問，如下所示。

    env:
    - name: TEST_ONE
      valueFrom:
        configMapKeyRef:
          name: test-front-app
          key: ENV_TEST

這樣，值為TEST TEST_ONE變量將被傳遞給部署。