使用prometheus pod监控Go语言webapp pod

我在 kubernetes 集群中运行了一个 golang webapp pod，我试图部署一个 prometheus pod 来监控 golang webapp pod。

prometheus.io/port:to 21122112

我遵循本指南，尝试了这个线程的解决方案线程，但仍然得到的结果是＜code＞2112＜/code＞endpoint关闭。

下面是my service.yaml和deployment.yaml

apiVersion: v1
kind: Service
metadata:
  name: prometheus-service
  namespace: monitoring
  annotations:
      prometheus.io/scrape: 'true'
      prometheus.io/path: '/metrics'
      prometheus.io/port:   '2112'
spec:
  selector: 
    app: prometheus-server
  type: NodePort  
  ports:
    - port: 8080
      targetPort: 9090 
      nodePort: 30000
---
apiVersion: v1
kind: Service
metadata: 
  namespace: monitoring
  name: goapp
spec:
  type: NodePort
  selector:
    app: golang
  ports:
    - name: main
      protocol: TCP
      port: 80
      targetPort: 2112
      nodePort: 30001






apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus-deployment
  namespace: monitoring
  labels:
    app: prometheus-server
spec:
  replicas: 1
  selector:
    matchLabels:
      app: prometheus-server
  template:
    metadata:
      labels:
        app: prometheus-server
    spec:
      containers:
        - name: prometheus
          image: prom/prometheus
          args:
            - "--config.file=/etc/prometheus/prometheus.yml"
            - "--storage.tsdb.path=/prometheus/"
          ports:
            - containerPort: 9090
          volumeMounts:
            - name: prometheus-config-volume
              mountPath: /etc/prometheus/
            - name: prometheus-storage-volume
              mountPath: /prometheus/
      volumes:
        - name: prometheus-config-volume
          configMap:
            defaultMode: 420
            name: prometheus-server-conf
  
        - name: prometheus-storage-volume
          emptyDir: {}
---
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: monitoring
  name: golang
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: golang
    spec:
      containers:
        - name: gogo
          image: effy77/gogo2
          ports: 
            - containerPort: 2112
  selector:
    matchLabels:
      app: golang

prometheus.io/port：2112