在Pod中使用ConfigMap配置环境变量：
apiVersion: v1
kind: Pod
metadata:
name: configmap-demo-pod
spec:
containers:
- name: demo
image: alpine
command: ["sleep", "3600"]
env:
- name: PLAYER_INITIAL_LIVES
valueFrom:
configMapKeyRef:
name: my-config
key: player_initial_lives
- name: UI_PROPERTIES_FILE_NAME
valueFrom:
configMapKeyRef:
name: my-config
key: ui_properties_file_name
在Pod中使用ConfigMap挂载配置文件：
apiVersion: v1
kind: Pod
metadata:
name: configmap-demo-pod
spec:
containers:
- name: demo
image: alpine
command: ["sleep", "3600"]
volumeMounts:
- name: config
mountPath: "/config"
readOnly: true
volumes:
- name: config
configMap:
name: my-config
items:
- key: "game.properties"
path: "game.properties"
