# Traefik

> A reverse proxy that configures itself from your Docker labels

Category: Self hosted apps (https://aiarabicdev.com/self-hosted)
Canonical page: https://aiarabicdev.com/self-hosted/traefik
Tags: reverse-proxy, docker, kubernetes, https, networking

Traefik watches Docker, Kubernetes and other providers and creates routes automatically when a container starts with the right labels. It obtains and renews Let's Encrypt certificates on its own, and the open source proxy is MIT licensed.

## Facts

- Licence: MIT
- Language: Go
- Cost: Free core, paid tiers exist
- Self hostable: yes
- Added: 2026-10-25
- Last checked: 2026-10-25

## Links

- Website: https://traefik.io
- Source: https://github.com/traefik/traefik
- Docs: https://doc.traefik.io/traefik/

## Routing that follows your containers

With a classic reverse proxy you edit a config file every time you add a service. Traefik inverts that: you add a few labels to a container in its compose file, such as the hostname it should answer on, and Traefik notices the container and starts routing to it. Remove the container and the route disappears.

Middlewares add the extras: redirects to HTTPS, basic auth, rate limits, headers, forward authentication to an identity provider. It suits people who already describe their stack in Docker Compose or Kubernetes and want routing to live next to each service rather than in a central file.

## What running it involves

Traefik itself is a single Go binary with a small memory footprint. The cost is learning its vocabulary of entrypoints, routers, services, middlewares and providers, and the difference between static and dynamic configuration. Most first day problems are a typo in a label, and the error stays silent until you check the dashboard or the logs.

To read Docker labels it needs access to the Docker socket, which is effectively root on the host. Use a read only socket proxy if you can, keep the dashboard off the internet, and store the certificate file on a volume you back up, or you will hit Let's Encrypt rate limits after a rebuild.

## Reach for it when

- you run many containers and want routes defined next to each one
- you deploy with Docker Compose, Swarm or Kubernetes
- you want automatic HTTPS and middlewares such as forward auth

## Watch out for

- the concepts take time, and label typos fail quietly
- Docker socket access gives it root level power over the host
- major version upgrades have changed configuration syntax, so read the migration guide first

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