Loki Single

🚨 This package is in technical preview and is subject to change.

Loki is a horizontally scalable, highly available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream.

Requirements

• Kubernetes >= 1.21.0
• Kustomize >= v3.5.3
• prometheus-operator from KFD monitoring module
• grafana from KFD monitoring module (module version >=1.15.0)

Prometheus Operator is necessary since we configure a ServiceMonitor to make some metrics available from loki on prometheus

Image repository and tag

• Loki image: grafana/loki
• Loki repo: Loki on Github

Configuration

Loki Stack Single is deployed with the following configuration:

• Single node
• Listens on port 3100 for client connections and metrics scraping
• Resource limits are 200m for CPU and 512Mi for memory
• Requires 10Gi storage

Deployment

You can deploy Loki Stack Single by running the following command in the root of the project:

kustomize build | kubectl apply -f -

This project also implements a dynamic Loki datasource that our Grafana from the monitoring stack automatically fetches and configures. To see the logs, navigate in Grafana to the explore section.