Kubernetes : Monitoring Stack - Prometheus & Grafana

README.md

title	Kubernetes : Prometheus + Grafana
author	mikamboo
date	2020-04-24 23:43
cover	https://images.unsplash.com/photo-1515630278258-407f66498911?ixlib=rb-1.2.1&auto=format&fit=crop&w=1374&q=80

Kubernetes : Prometheus + Grafana

Monitor Kubernetes cluster using Prometheus + Grafana

Requirements

• A ready to use kubenetes cluster
• Helm client wich can access to cluster

Install stack

Step 1 : Create monitoring stack namespace

kubectl create namespace monitoring

Step 2 : Install Prometheus + Grafana

• Init Helm repos

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

• Install Prometheus + Grafana

helm install grafana --namespace monitoring grafana/grafana
helm install prometheus --namespace monitoring bitnami/prometheus

Step 3 : Connect

• Prometheus: http://localhost:9090

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

• Grafana: http://localhost:3000

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

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

• Grafana datasource settings

Use following URL as Prometheus server url: http://prometheus-server.monitoring.svc.cluster.local

WARNING: Grafana - By default Persistence is disabled !!!

Links

• Prometheus: https://prometheus.io
• Grafana: https://grafana.com
• Grafana dashboards to import
• Medium Install Prometheus and Grafana by Helm
• Tutorial Kube Prometheus Stack : https://stash.run/docs/v2020.12.17/guides/latest/monitoring/prometheus_operator/

gistsblog.json

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Update 05/2022

All in one: Use prometheus-community Helm chart

Comportements

• The Prometheus Operator
• Highly available Prometheus
• Highly available Alertmanager
• Prometheus node-exporter
• Prometheus Adapter for Kubernetes Metrics APIs
• kube-state-metrics
• Grafana

Installation

Get Helm Repository

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

Install Chart

helm install prometheus-stack -n monitoring prometheus-community/kube-prometheus-stack