k8s 中为 Pod 部署环境变量从配置文件

发表于 更新于

创建ConfigMap

配置信息

如配置 MySQL 连接信息

文件名称: db-config.yaml

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kind: ConfigMap
apiVersion: v1
metadata:
  name: db-config
  namespace: default
data:
  DB_HOST: 127.0.0.1
  DB_NAME: test
  DB_PASS: test
  DB_PORT: '5432'
  DB_USER: test

部署配置

使用 kubectl 进行部署

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kubectl apply -f db-config.yaml

容器引用配置

Pod容器默认读取环境变量，通过名称

字段 说明
id-gen 服务名称
docker.io/id-service:latest 测试镜像 
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kind: Deployment
apiVersion: apps/v1
metadata:
  name: id-gen
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: id-gen
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: id-gen
    spec:
      containers:
        - name: container-jvnzzs
          image: 'docker.io/id-service:latest'
          envFrom:
            - configMapRef:
                name: db-config
          imagePullPolicy: IfNotPresent
      restartPolicy: Always
      terminationGracePeriodSeconds: 30

关键配置

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envFrom:
  - configMapRef:
      name: db-config