# 此模板演示了两种使用configmap的方式

#  - 1. 环境变量方式

#  - 2. 挂载volume方式

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hellok8s-go-http
spec:
  replicas: 1 # 当使用 hostPort 时，每个节点只能运行一个 pod
  strategy:
    type: Recreate # 因为下面使用hostPort进行测试，所以更新时只能先销毁再创建
  selector:
    matchLabels:
      app: hellok8s
  template:
    metadata:
      labels:
        app: hellok8s
    spec:
      containers:
        - image: leigg/hellok8s:v4_configmap
          name: hellok8s
          ports:
            - containerPort: 3000
              hostPort: 3000
          env: # 以环境变量的方式读取data
            - name: DB_URL
              valueFrom:
                configMapKeyRef:
                  name: hellok8s-configmap
                  key: DB_URL
          volumeMounts: # 以挂载卷的方式读取二进制数据
            - name: configmap-volume
              mountPath: "/etc/configmap_vol"
      volumes:
        - name: configmap-volume
          configMap:
            name: hellok8s-configmap