borgmatic/docs/reference/configuration/monitoring/loki.md

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title: Loki eleventyNavigation: key: • Loki

parent: 🚨 Monitoring

New in version 1.8.3 Grafana Loki is a "horizontally scalable, highly available, multi-tenant log aggregation system inspired by Prometheus." borgmatic has built-in integration with Loki, sending both backup status and borgmatic logs.

You can configure borgmatic to use either a self-hosted Loki instance or a Grafana Cloud account. Start by setting your Loki API push URL. Here's an example:

loki:
    url: http://localhost:3100/loki/api/v1/push

    labels:
        app: borgmatic
        hostname: example.org

With this configuration, borgmatic sends its logs to your Loki instance as any of the create, prune, compact, or check actions are run. Then, after the actions complete, borgmatic notifies Loki of success or failure.

This hook supports sending arbitrary labels to Loki. At least one label is required.

There are also a few placeholders you can optionally use as label values:

• __config: name of the borgmatic configuration file
• __config_path: full path of the borgmatic configuration file
• __hostname: the local machine hostname

These placeholders are only substituted for the whole label value, not interpolated into a larger string. For instance:

loki:
    url: http://localhost:3100/loki/api/v1/push

    labels:
        app: borgmatic
        config: __config
        hostname: __hostname

Also check out this Loki dashboard for borgmatic if you'd like to see your backup logs and statistics in one place.