Live demo

Try Cairn OBS, no signup required

A public instance, seeded with synthetic log data and pre-built dashboards, running the same code as the architecture pages describe — kept deliberately separate from any real deployment. It's read-only and resets nightly, so poke around freely.

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Read-only, resets nightly

The demo login has Viewer access only — it can run searches and browse dashboards, agents, hosts, and alerts, but every create/edit/delete action is rejected by the server, not just hidden in the UI. Every host, log line, and metric you'll see is synthetic, generated fresh each night — nothing here is real production data or a real fleet. Screenshots below, in case you'd rather look before you click through.

Cairn OBS landing screen after login, showing quick links to Search, Dashboards, Agents, and Hosts.

Landing screen

One query bar for filter/stats queries and free-text search, with quick links into the four main areas of the app.

Cairn OBS query page with an empty pipe-syntax query bar and a pipe syntax cheat sheet.

Query bar

Pipe syntax or raw SQL, with a language toggle and an inline cheat sheet — the same bar drives filtering, full-text search, and stats.

Cairn OBS query results showing a stats aggregation table grouped by host, service, and severity with row counts.

Stats query results

A real stats count by host, service, severity query — the same one you can run yourself on the live instance.

Cairn OBS data sources page describing the single ClickHouse and Tantivy data source for this deployment.

Data sources

Every tenant's ClickHouse database and Tantivy index, provisioned together — nothing to hand-configure to get started.

Want to see how it's built instead?

The architecture page walks through the whole pipeline, agent to query result.

View architecture →