deployment.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: special-config
  namespace: demo
data:
  K8S_CONFIG_MAP_VAR_ONE: value_one
  K8S_CONFIG_MAP_VAR_TWO: value_two
---
apiVersion: v1
kind: Secret
metadata:
  name: mysecret
  namespace: demo
data:
  username: YWRtaW5fdXNlcg==
  password: YWRtaW5fcGFzc3dvcmQ=
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-http-env 
  namespace: demo
spec:
  replicas: 3
  selector:
    matchLabels:
      app: go-http-env-deployment
  template:
    metadata:
      labels:
        app: go-http-env-deployment
    spec:
      volumes:
      - name: my-secret-volume
        secret:
          secretName: mysecret
      containers:
      - name: go-http-env
        image: gcr.io/schnauzer-163208/go-http-env:latest
        ports:
        - containerPort: 8080
        resources:
          limits:
            cpu: 100m
            memory: 128Mi
        volumeMounts:
        - name: my-secret-volume
          mountPath: "/etc/secrets"
          readOnly: true
        env:
          - name: K8S_POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: K8S_NODE_NAME
            valueFrom:
              fieldRef:
                  fieldPath: spec.nodeName
          - name: K8S_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
        envFrom:
          - configMapRef:
              name: special-config
---
apiVersion: v1
kind: Service
metadata:
  name: myservice
  namespace: demo
spec:
  type: LoadBalancer
  selector:
    app: go-http-env-deployment
  ports:
  - name: web
    protocol: TCP
    port: 8080