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Logging with Grafana and Loki

Install the Prometheus stack:​

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm upgrade --install prometheus prometheus-community/kube-prometheus-stack --namespace monitor --create-namespace

Install Loki:​

helm repo add loki https://grafana.github.io/loki/charts
helm upgrade --install loki --namespace=monitoring grafana/loki-stack --create-namespace

Setup Data Sources in Grafana​

  1. Open the Grafana Dashboard:

    • Port-forward grafana dashboard kubectl port-forward -n monitor service/prometheus-grafana 3000:80
    • Get Grafana credentials kubectl get secrets -n monitor prometheus-grafana -o jsonpath='{.data.admin-password}' | base64 -D
    • Navigate to http://localhost:3000

  2. Add a data source by navigating to http://localhost:3000/datasources or click "Data Sources" under the ⚙️ icon from left menu.

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  3. Click on "Add Data Sources" and select "Loki" from the list.

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  4. Enter the loki endpoint in the URL field as http://loki.monitoring:3100 or to the corresponding <name>.<namespace>:<port> value according to your deployment, and click on "Save & test".

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  5. Next click on "Explore" or navigate to http://localhost:3000/explore and select "Loki" from the dropdown menu. Select the desired Labels and Click on "Run query". Your logs should now start appearing.

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