Using GKE Metrics Agent to send Prometheus Metrics to Stack Driver

gke-agent.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: gke-certmanager-config
  namespace: kube-system
data:
  gke-metrics-agent-config.yaml : |
    receivers:
      prometheus:
        config:
          scrape_configs:
          - job_name: "certmanager"
            scrape_interval: 60s
            static_configs:
            - targets: ["cert-manager.cert-manager:9402"]
    exporters:
      stackdriver:
        endpoint: monitoring.googleapis.com:443
        timeout: 15s
        skip_create_metric_descriptor: true
    service:
      pipelines:
        metrics/prom:
          receivers:
            - prometheus
          exporters:
            - stackdriver
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    component: gke-metrics-agent-certmanager
    k8s-app: gke-metrics-agent-certmanager
  name: gke-metrics-agent-certmanager
  namespace: kube-system
spec:
  selector:
    matchLabels:
      component: gke-metrics-agent-certmanager
      k8s-app: gke-metrics-agent-certmanager
  template:
    metadata:
      labels:
        component: gke-metrics-agent-certmanager
        k8s-app: gke-metrics-agent-certmanager
    spec:
      containers:
      - command:
        - /otelsvc
        - --config=/conf/gke-metrics-agent-config.yaml
        - --metrics-level=NONE
        image: gke.gcr.io/gke-metrics-agent:0.2.1-gke.0
        imagePullPolicy: IfNotPresent
        name: gke-metrics-agent
        resources:
          limits:
            memory: 1024Mi
          requests:
            cpu: 3m
            memory: 50Mi
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - all
          runAsGroup: 1000
          runAsNonRoot: true
          runAsUser: 1000
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /conf
          name: gke-metrics-agent-config-vol
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      serviceAccount: gke-metrics-agent
      serviceAccountName: gke-metrics-agent
      terminationGracePeriodSeconds: 30
      volumes:
      - configMap:
          defaultMode: 420
          items:
          - key: gke-metrics-agent-config.yaml 
            path: gke-metrics-agent-config.yaml
          name: gke-certmanager-config
        name: gke-metrics-agent-config-vol