88 lines
2.2 KiB
Markdown
88 lines
2.2 KiB
Markdown
# StripPrefix
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Removing Prefixes From the Path Before Forwarding the Request
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{: .subtitle }
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<!--
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TODO: add schema
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-->
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Remove the specified prefixes from the URL path.
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## Configuration Examples
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```yaml tab="Docker"
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# Strip prefix /foobar and /fiibar
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labels:
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- "traefik.http.middlewares.test-stripprefix.stripprefix.prefixes=/foobar,/fiibar"
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```
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```yaml tab="Kubernetes"
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# Strip prefix /foobar and /fiibar
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apiVersion: traefik.containo.us/v1alpha1
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kind: Middleware
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metadata:
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name: test-stripprefix
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spec:
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stripPrefix:
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prefixes:
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- /foobar
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- /fiibar
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```
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```json tab="Marathon"
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"labels": {
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"traefik.http.middlewares.test-stripprefix.stripprefix.prefixes": "/foobar,/fiibar"
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}
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```
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```yaml tab="Rancher"
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# Strip prefix /foobar and /fiibar
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labels:
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- "traefik.http.middlewares.test-stripprefix.stripprefix.prefixes=/foobar,/fiibar"
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```
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```toml tab="File (TOML)"
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# Strip prefix /foobar and /fiibar
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[http.middlewares]
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[http.middlewares.test-stripprefix.stripPrefix]
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prefixes = ["/foobar", "/fiibar"]
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```
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```yaml tab="File (YAML)"
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# Strip prefix /foobar and /fiibar
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http:
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middlewares:
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test-stripprefix:
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stripPrefix:
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prefixes:
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- "/foobar"
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- "/fiibar"
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```
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## Configuration Options
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### General
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The StripPrefix middleware will:
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- strip the matching path prefix.
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- store the matching path prefix in a `X-Forwarded-Prefix` header.
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!!! tip
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Use a `StripPrefix` middleware if your backend listens on the root path (`/`) but should be routeable on a specific prefix.
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### `prefixes`
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The `prefixes` option defines the prefixes to strip from the request URL.
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For instance, `/products` would match `/products` but also `/products/shoes` and `/products/shirts`.
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Since the path is stripped prior to forwarding, your backend is expected to listen on `/`.
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If your backend is serving assets (e.g., images or Javascript files), chances are it must return properly constructed relative URLs.
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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).
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The `X-Forwarded-Prefix` header can be queried to build such URLs dynamically.
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