k8s-monitoring

Use CronJob to trigger application via HTTP

Setup

1. Start Kubernetes cluster

   minikube start --addons metrics-server

2. Start Application & Monitoring

   skaffold run --port-forward=user

3. Get Password for Grafana

   kubectl get secret --namespace monitoring grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

4. Open Grafana using
   login: admin
   password: <SEE-PREVIOUS-STEP>

Setup Grafana Using Helm

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

# Prometheus - http://prometheus-server.monitoring.svc.cluster.local
kubectl create namespace monitoring
helm install prometheus prometheus-community/prometheus --namespace monitoring
kubectl get pods -n monitoring

export POD_NAME=$(kubectl get pods --namespace monitoring -l "app.kubernetes.io/name=prometheus,app.kubernetes.io/instance=prometheus" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace monitoring port-forward $POD_NAME 9090

# Grafana
helm install grafana grafana/grafana --namespace monitoring

kubectl get secret --namespace monitoring grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

export POD_NAME=$(kubectl get pods --namespace monitoring -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=grafana" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace monitoring port-forward $POD_NAME 3000

Useful Boards

ID	URL
15757	https://grafana.com/grafana/dashboards/15757-kubernetes-views-global
15760	https://grafana.com/grafana/dashboards/15760-kubernetes-views-pods
19105	https://grafana.com/grafana/dashboards/19105-prometheus