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apiVersion: v1
kind: Service
metadata:
  labels:
    app.kubernetes.io/name: rahasak
    app.kubernetes.io/component: blackbox
  name: rahasak
spec:
  clusterIP: None
  ports:

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# run service monitory
kubectl apply -f servicemonitor.yaml

❯❯ kubectl get servicemonitors | grep blackbox-exporter
blackbox-exporter                                    69m

# access prometheus ui via port-forward
❯❯ kubectl port-forward svc/prom-kube-prometheus-stack-prometheus 9090:9090
Forwarding from 127.0.0.1:9090 -> 9090
Forwarding from [::1]:9090 -> 9090

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# run nginx 
kubectl apply -f nginx1.yaml
kubectl apply -f nginx2.yaml

❯❯ kubectl get pods | grep nginx
nginx1                                                   1/1     Running   0             64m
nginx2                                                   1/1     Running   0             62m

❯❯ kubectl get svc | grep nginx
nginx1                                    LoadBalancer   10.110.184.190   <pending>     80:32198/TCP                 65m

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apiVersion: v1
kind: Pod
metadata:
  name: nginx2
  labels:
    app: nginx2
    app.kubernetes.io/component: blackbox
spec:
  containers:
    - name: nginx2

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apiVersion: v1
kind: Pod
metadata:
  name: nginx1
  labels:
    app: nginx1
    app.kubernetes.io/component: blackbox
spec:
  containers:
    - name: nginx1

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apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: blackbox-exporter
spec:
  endpoints:
  - interval: 1m
    path: /probe
    scrapeTimeout: 10s
    params:

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prometheus:
  prometheusSpec:
    serviceMonitorNamespaceSelector: {} # get service monitors on all namespaces
    serviceMonitorSelectorNilUsesHelmValues: false
    ruleSelectorNilUsesHelmValues: false
    ruleNamespaceSelector: {}
    serviceMonitorSelector: {} # get all existing service monitors

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# add helm repository
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts 
helm repo update

# install prometheus with helm chart
helm install prom prometheus-community/kube-prometheus-stack --values values-prometheus.yaml

# running pods 
# chart installs additional, dependent charts
#   - prometheus-community/kube-state-metrics

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# add helm repository
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

# install blackbox exporter with values file
helm install black prometheus-community/prometheus-blackbox-exporter --values values-blackbox.yaml

# running pods
❯❯ kubectl get pods
NAME                                                  READY   STATUS    RESTARTS   AGE

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config:
  modules:
    tcp_prober:
      prober: tcp
      tcp:
        ip_protocol_fallback: false
        preferred_ip_protocol: ip4