K8S 通过configMap引用环境变量

• 以nginx为例

1. 创建configMap

• conf.yaml
• 配置中新建两个环境变量ENV_1和ENV_NAME

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-conf
data:
  ENV_1: "111.111.111.111"
  ENV_NAME: "test"

kubectl apply -f conf.yaml

2. 创建pod,批量引用环境变量

• nginx.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

        # 导入环境变量
        envFrom:
          # 使用configMap
          - configMapRef:
              # name为configMap中的metadata name
              name: nginx-config

• 部署

# 部署
kubectl apply -f nginx.yaml
# 查看pod
kubectl get pods
# 查看pod内部环境变量
kubectl exec -it nginx-587df9cfb6-67k72 -- env

• 完成