What is Dozzle and what does it do?

Updated

Dozzle is a lightweight, open-source log viewer for Docker, Swarm, and Kubernetes. It streams container logs to your browser in real time, so you can search, filter, and follow what containers are doing without opening a shell on the host. It fits teams and individuals who run containers and want faster debugging or day-to-day visibility, rather than a full observability platform.

Core capabilities

The project describes itself around a few concrete functions:

  • Real-time logs — container logs stream as they happen. You can search, filter, and follow across containers without touching the host.
  • Live stats and metrics — watch resource usage alongside logs.
  • Multi-host and Swarm support — view containers across more than one host, including Docker Swarm.
  • Alerts and webhooks — route notifications out of Dozzle when something needs attention.

The headline use case is debugging: when a container misbehaves, you open Dozzle in a browser and read the log stream instead of SSHing into the machine and running docker logs by hand.

How it differs from a full monitoring stack

Dozzle is deliberately narrow. It is a log viewer, not a metrics database, tracing system, or alerting platform in the Prometheus/Grafana sense. That narrowness is the point:

Dimension Dozzle Full observability stack
Primary job Read and follow container logs Store, query, and correlate metrics, logs, traces
Setup weight Lightweight, browser-based Multiple components, storage, retention planning
Best for Quick debugging, live tailing Long-term retention, dashboards, SLOs

If you need historical log retention, complex queries, or cross-service tracing, Dozzle alone will not cover it. If you mainly need to see what a container is printing right now, it is a direct fit.

When it makes sense to use it

Reach for Dozzle when:

  • You run Docker, Swarm, or Kubernetes and want browser access to logs without host logins.
  • You debug containers frequently and want search and filtering across several containers at once.
  • You want live stats next to the log stream while investigating an issue.

Look elsewhere when you need durable log storage, compliance-grade retention, or deep query languages.

Dozzle Cloud

The site also lists Dozzle Cloud as an offering alongside the open-source viewer. The available material does not specify pricing or plan details, so treat cost and feature limits as something to confirm on the site before relying on it.

The short version

Dozzle answers one question well: what are my containers doing right now? It gives you real-time logs, live stats, multi-host visibility, and alerting hooks through a browser, with the low overhead of a single-purpose open-source tool. Choose it for fast container debugging and live log tailing; pair it with a broader stack if you also need retention and deep analysis.