77 lines
2.2 KiB
Markdown
77 lines
2.2 KiB
Markdown
# StripPrefixRegex
|
|
|
|
Removing Prefixes From the Path Before Forwarding the Request (Using a Regex)
|
|
{: .subtitle }
|
|
|
|
Remove the matching prefixes from the URL path.
|
|
|
|
## Configuration Examples
|
|
|
|
```yaml tab="Docker"
|
|
labels:
|
|
- "traefik.http.middlewares.test-stripprefixregex.stripprefixregex.regex=/foo/[a-z0-9]+/[0-9]+/"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.containo.us/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-stripprefixregex
|
|
spec:
|
|
stripPrefixRegex:
|
|
regex:
|
|
- "/foo/[a-z0-9]+/[0-9]+/"
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
- "traefik.http.middlewares.test-stripprefixregex.stripprefixregex.regex=/foo/[a-z0-9]+/[0-9]+/"
|
|
```
|
|
|
|
```json tab="Marathon"
|
|
"labels": {
|
|
"traefik.http.middlewares.test-stripprefixregex.stripprefixregex.regex": "/foo/[a-z0-9]+/[0-9]+/"
|
|
}
|
|
```
|
|
|
|
```yaml tab="Rancher"
|
|
labels:
|
|
- "traefik.http.middlewares.test-stripprefixregex.stripprefixregex.regex=/foo/[a-z0-9]+/[0-9]+/"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
http:
|
|
middlewares:
|
|
test-stripprefixregex:
|
|
stripPrefixRegex:
|
|
regex:
|
|
- "/foo/[a-z0-9]+/[0-9]+/"
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
[http.middlewares]
|
|
[http.middlewares.test-stripprefixregex.stripPrefixRegex]
|
|
regex = ["/foo/[a-z0-9]+/[0-9]+/"]
|
|
```
|
|
|
|
## Configuration Options
|
|
|
|
### General
|
|
|
|
The StripPrefixRegex middleware strips the matching path prefix and stores it in a `X-Forwarded-Prefix` header.
|
|
|
|
!!! tip
|
|
|
|
Use a `stripPrefixRegex` middleware if your backend listens on the root path (`/`) but should be exposed on a specific prefix.
|
|
|
|
### `regex`
|
|
|
|
The `regex` option is the regular expression to match the path prefix from the request URL.
|
|
|
|
!!! tip
|
|
|
|
Regular expressions can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
|
|
|
|
For instance, `/products` also matches `/products/shoes` and `/products/shirts`.
|
|
|
|
If your backend is serving assets (e.g., images or JavaScript files), it can use the `X-Forwarded-Prefix` header to properly construct relative URLs.
|
|
Using the previous 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).
|