traefik/docs/content/middlewares/addprefix.md

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# Add Prefix
Prefixing the Path
{: .subtitle }
![AddPrefix](../assets/img/middleware/addprefix.png)
The AddPrefix middleware updates the URL Path of the request before forwarding it.
## Configuration Examples
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```yaml tab="Docker"
# Prefixing with /foo
labels:
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- "traefik.http.middlewares.add-foo.addprefix.prefix=/foo"
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```
```yaml tab="Kubernetes"
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# Prefixing with /foo
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apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
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name: add-foo
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spec:
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addPrefix:
prefix: /foo
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```
```json tab="Marathon"
"labels": {
"traefik.http.middlewares.add-foo.addprefix.prefix": "/foo"
}
```
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```yaml tab="Rancher"
# Prefixing with /foo
labels:
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- "traefik.http.middlewares.add-foo.addprefix.prefix=/foo"
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```
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```toml tab="File (TOML)"
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# Prefixing with /foo
[http.middlewares]
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[http.middlewares.add-foo.addPrefix]
prefix = "/foo"
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```
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```yaml tab="File (YAML)"
# Prefixing with /foo
http:
middlewares:
add-foo:
addPrefix:
prefix: "/foo"
```
## Configuration Options
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### `prefix`
`prefix` is the string to add before the current path in the requested URL. It should include the leading slash (`/`).