Demo setup for Grafana Loki in microservices mode using MinIO as storage backend.

The following pre-requisites must be installed:

• Helm 3
• Docker
• kind

Run ./setup.sh. This will create a kind cluster and install all services.

A kind cluster with one master and three worker nodes is created. The cluster uses a local pull-through Docker registry for faster image pulling on the various kind nodes and to avoid rate-limiting issue with Docker hub.

Port 30123 is mapped to the same port on the master node in order to enable ingress.

• ingress-nginx
• metrics-server
• kube-prometheus-stack
• minio
• loki-distributed
• promtail
• loki-canary

• Grafana: http://localhost:30123/grafana

• Prometheus: http://localhost:30123/prom

• Alertmanager: http://localhost:30123/alerts

• MinIO: http://localhost:30123/minio

  MinIO secret key and access keys for logging into the UI can be retrieved with the following commands.

  kubectl get secret -n minio minio-credentials -o jsonpath="{.data.secretkey}" | base64 --decode | xargs echo
  kubectl get secret -n minio minio-credentials -o jsonpath="{.data.accesskey}" | base64 --decode | xargs echo

Besides a number of dashboards that come with the kube-prometheus-stack, the following dashboards are provided for Loki:

• Loki Operational (adapted from Grafana's Tanka setup): http://localhost:30123/grafana/d/loki-operational/
• Loki Canary: http://localhost:30123/grafana/d/loki-canary/