Prometheus in k8s example

prometheus.yaml

apiVersion: v1
kind: Service
metadata:
  name: prometheus-service
spec:
  ports:
  - name: http
    port: 9090
    targetPort: 9090
  selector:
    app: prometheus
---
apiVersion: v1
kind: Pod
metadata:
  name: prometheus-pod
  labels:
    app: prometheus
spec:
  containers:
  - name: prometheus
    image: prom/prometheus:v2.34.0
    ports:
    - name: http
      containerPort: 9090
      protocol: TCP

    volumeMounts:
    - name: prometheus-configuration-volume
      mountPath: /etc/prometheus/prometheus.yml
      subPath: prometheus.yml

  volumes:
  - name: prometheus-configuration-volume
    configMap:
      name: prometheus-configuration-configmap
      items:
      - key: prometheus.yml
        path: prometheus.yml
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-configuration-configmap
data:
  prometheus.yml: |
    global:
      scrape_interval: "1s"

    scrape_configs:
    - job_name: "scrape-job-1"
      metrics_path: "some-metrics/metrics"
      static_configs:
      - targets:
        - service1:10000

      metric_relabel_configs:
      - source_labels: [__name__]
        target_label: __name__
        #regex: <regex> | default = (.*)
        replacement: job_1_${1}

    - job_name: "scrape-job-1"
      metrics_path: "/metrics"
      static_configs:
      - targets:
        - service2:20000

      metric_relabel_configs:
      - source_labels: [__name__]
        target_label: __name__
        #regex: <regex> | default = (.*)
        replacement: job_2_${1}