117 lines
3.1 KiB
Markdown
117 lines
3.1 KiB
Markdown
---
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title: "Traefik Proxy Middleware Overview"
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description: "There are several available middleware in Traefik Proxy used to modify requests or headers, take charge of redirections, add authentication, and so on."
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---
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# Middlewares
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Tweaking the Request
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{: .subtitle }
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Attached to the routers, pieces of middleware are a means of tweaking the requests before they are sent to your [service](../routing/services/index.md) (or before the answer from the services are sent to the clients).
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There are several available middleware in Traefik, some can modify the request, the headers, some are in charge of redirections, some add authentication, and so on.
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Middlewares that use the same protocol can be combined into chains to fit every scenario.
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!!! warning "Provider Namespace"
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Be aware of the concept of Providers Namespace described in the [Configuration Discovery](../providers/overview.md#provider-namespace) section.
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It also applies to Middlewares.
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## Configuration Example
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```yaml tab="Docker & Swarm"
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# As a Docker Label
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whoami:
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# A container that exposes an API to show its IP address
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image: traefik/whoami
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labels:
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# Create a middleware named `foo-add-prefix`
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- "traefik.http.middlewares.foo-add-prefix.addprefix.prefix=/foo"
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# Apply the middleware named `foo-add-prefix` to the router named `router1`
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- "traefik.http.routers.router1.middlewares=foo-add-prefix@docker"
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```
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```yaml tab="IngressRoute"
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---
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apiVersion: traefik.io/v1alpha1
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kind: Middleware
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metadata:
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name: stripprefix
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spec:
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stripPrefix:
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prefixes:
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- /stripit
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---
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apiVersion: traefik.io/v1alpha1
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kind: IngressRoute
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metadata:
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name: ingressroute
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spec:
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# more fields...
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routes:
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# more fields...
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middlewares:
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- name: stripprefix
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```
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```yaml tab="Consul Catalog"
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# Create a middleware named `foo-add-prefix`
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- "traefik.http.middlewares.foo-add-prefix.addprefix.prefix=/foo"
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# Apply the middleware named `foo-add-prefix` to the router named `router1`
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- "traefik.http.routers.router1.middlewares=foo-add-prefix@consulcatalog"
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```
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```yaml tab="File (YAML)"
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# As YAML Configuration File
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http:
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routers:
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router1:
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service: myService
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middlewares:
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- "foo-add-prefix"
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rule: "Host(`example.com`)"
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middlewares:
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foo-add-prefix:
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addPrefix:
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prefix: "/foo"
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services:
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service1:
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loadBalancer:
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servers:
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- url: "http://127.0.0.1:80"
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```
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```toml tab="File (TOML)"
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# As TOML Configuration File
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[http.routers]
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[http.routers.router1]
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service = "myService"
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middlewares = ["foo-add-prefix"]
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rule = "Host(`example.com`)"
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[http.middlewares]
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[http.middlewares.foo-add-prefix.addPrefix]
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prefix = "/foo"
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[http.services]
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[http.services.service1]
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[http.services.service1.loadBalancer]
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[[http.services.service1.loadBalancer.servers]]
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url = "http://127.0.0.1:80"
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```
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## Available Middlewares
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A list of HTTP middlewares can be found [here](http/overview.md).
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A list of TCP middlewares can be found [here](tcp/overview.md).
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{!traefik-for-business-applications.md!}
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