Loki is log aggregation system inspired by Prometheus.
Promtail is an agent which ships the contents of local logs to a private Grafana Loki instance or Grafana Cloud.
These logs can then be viewed/queried in the Loki Grafana dashboard.
It can be configured to use Minio as the storing mechanism.
Promtail can be installed using a kuberentes daemon set : Promtail K8s Installation
Loki can be installed using the following yaml file: loki.yaml (See Loki documentation for other alternatives)
This install includes configuration for minio bucket called "loki"
This dashboard shows the logs from the "istio-nonrtric" namespace that contain the string "token"