Setup Prometheus + Grafana no k8s

Referências

• AWS Docs – Deploy Prometheus no EKS
• Artigo Medium – Prometheus + Grafana no K8s

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Instalação via Helm

Adicionar repositórios

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

Instalar Prometheus

helm install prometheus prometheus-community/prometheus \
  --namespace monitoring --create-namespace

Instalar Grafana

helm install grafana grafana/grafana \
  --namespace monitoring --create-namespace

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Validação

kubectl get all -n monitoring

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Acesso via port-forward

Grafana

kubectl port-forward svc/grafana 3000:80 -n monitoring

Acesse: http://localhost:3000 Usuário: admin Senha:

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

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Prometheus

kubectl port-forward svc/prometheus-server 9090:80 -n monitoring

Acesse: http://localhost:9090

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Instalação do Prometheus e Grafana com Node Selector

Criar arquivos de configuração

prometheus-values.yaml

nodeSelector:
  nodegroup: monitoring

prometheus:
  nodeSelector:
    nodegroup: monitoring
  service:
    type: ClusterIP

alertmanager:
  nodeSelector:
    nodegroup: monitoring

grafana:
  nodeSelector:
    nodegroup: monitoring

grafana-values.yaml

nodeSelector:
  nodegroup: monitoring

grafana:
  additionalDataSources:
    - name: Prometheus
      type: prometheus
      url: http://kube-prometheus-kube-prome-prometheus.monitoring.svc.cluster.local:9090
      access: proxy
      isDefault: true

Comandos de instalação

# Adicionar repositórios 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

# Instalar Prometheus Stack
helm install kube-prometheus prometheus-community/kube-prometheus-stack \
  -f prometheus-values.yaml \
  --namespace monitoring \
  --create-namespace

# Instalar Grafana  
helm install grafana grafana/grafana \
  -f grafana-values.yaml \
  --namespace monitoring \
  --create-namespace

Verificar instalação

kubectl get pods -n monitoring -o wide

Acessar os serviços

# Prometheus
kubectl port-forward -n monitoring pod/prometheus-kube-prometheus-kube-prome-prometheus-0 9090

# Grafana
kubectl port-forward svc/grafana 3000:80 -n monitoring

Credenciais Grafana: - Usuário: admin - Senha: kubectl get secret grafana -n monitoring -o jsonpath="{.data.admin-password}" | base64 --decode