k8s-configMap-example.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: example-config
data:
  example.conf: |
    {
      "host": "localhost"
    }
---
apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: example
  labels:
    app: example
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: example
    spec:
      containers:
      - name: example
        image: ubuntu
        resources:
          requests:
            cpu: 500m
            memory: 512m
        volumeMounts:
          - name: config-volume
            mountPath: /.config/
      volumes:
      - name: config-volume
        configMap:
          name: example-config
          items:
            - key: example.conf
              path: example.conf