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StripPrefix¶

Removing Prefixes From the Path Before Forwarding the Request

TODO: add schema

Remove the specified prefixes from the URL path.

Configuration Examples¶

Docker

# Strip prefix /foobar and /fiibar
labels:
- "traefik.http.middlewares.test-stripprefix.stripprefix.prefixes=/foobar, /fiibar"

Kubernetes

# Strip prefix /foobar and /fiibar
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: test-stripprefix
spec:
  stripPrefix:
    prefixes:
    - /foobar
    - /fiibar

Marathon

"labels": {
  "traefik.http.middlewares.test-stripprefix.stripprefix.prefixes": "/foobar, /fiibar"
}

Rancher

# Strip prefix /foobar and /fiibar
labels:
- "traefik.http.middlewares.test-stripprefix.stripprefix.prefixes=/foobar, /fiibar"

File (TOML)

# Strip prefix /foobar and /fiibar
[http.middlewares]
  [http.middlewares.test-stripprefix.stripPrefix]
    prefixes = ["/foobar", "/fiibar"]

File (YAML)

# Strip prefix /foobar and /fiibar
http:
  middlewares:
    test-stripprefix:
      stripPrefix:
        prefixes:
        - "/foobar"
        - "/fiibar"

Configuration Options¶

General¶

The StripPrefix middleware will:

strip the matching path prefix.
store the matching path prefix in a X-Forwarded-Prefix header.

Tip

Use a StripPrefix middleware if your backend listens on the root path (/) but should be routeable on a specific prefix.

`prefixes`¶

The prefixes option defines the prefixes to strip from the request URL.

For instance, /products would match /products but also /products/shoes and /products/shirts.

Since the path is stripped prior to forwarding, your backend is expected to listen on /.

If your backend is serving assets (e.g., images or Javascript files), chances are it must return properly constructed relative URLs.
Continuing on the example, the backend should return /products/shoes/image.png (and not /images.png which Traefik would likely not be able to associate with the same backend).

The X-Forwarded-Prefix header can be queried to build such URLs dynamically.