loki start

To start a Loki instance in Docker or a Kubernetes cluster, run:

kurtosis loki start

This command starts a local Loki instance and restarts the Kurtosis engine with an updated configuration. The new configuration includes a log sink that routes logs to the local Loki instance.

If you also want a locally managed Grafana instance wired to the same Loki backend, use grafloki start instead.

Read more about sinks and how to export logs from Kurtosis.

Kurtosis Config allows configuring grafana-loki and should-enable-default-logs-sink configurations.

config-version: 5
should-send-metrics: true
kurtosis-clusters:
  docker:
    type: "docker"
    grafana-loki:
      grafana-image: "grafana/grafana:11.6.0"
      loki-image: "grafana/loki:2.9.4"
      # Starts Grafana and Loki before engine - useful if Grafana + Loki is the default logging setup
      should-start-before-engine: true
    # If set to false, Kurtosis will not collect logs in the default PersistentVolumeLogsDB
    # Useful to save storage if leveraging external logging setups
    should-enable-default-logs-sink: false