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133 lines
4.6 KiB
Markdown
133 lines
4.6 KiB
Markdown
---
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title: "Traefik Ingress"
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description: "A guide to integrating Authelia with the Traefik Kubernetes Ingress."
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lead: "A guide to integrating Authelia with the Traefik Kubernetes Ingress."
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date: 2022-06-15T17:51:47+10:00
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draft: false
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images: []
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menu:
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integration:
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parent: "kubernetes"
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weight: 550
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toc: true
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---
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We officially support the Traefik 2.x Kubernetes ingress controllers. These come in two flavors:
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* [Traefik Kubernetes Ingress](https://doc.traefik.io/traefik/providers/kubernetes-ingress/)
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* [Traefik Kubernetes CRD](https://doc.traefik.io/traefik/providers/kubernetes-crd/)
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The [Traefik documentation](../proxies/traefik.md) may also be useful for crafting advanced annotations to use with
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this ingress even though it's not specific to Kubernetes.
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## Get Started
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It's __*strongly recommended*__ that users setting up *Authelia* for the first time take a look at our
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[Get Started](../prologue/get-started.md) guide. This takes you through various steps which are essential to
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bootstrapping *Authelia*.
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## Special Notes
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### Cross-Namespace Resources
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Depending on your Traefik version you may be required to configure the
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[allowCrossNamespace](https://doc.traefik.io/traefik/providers/kubernetes-crd/#allowcrossnamespace) to reuse a
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[Middleware] from a namespace different to the Ingress or IngressRoute. Alternatively you can create the [Middleware] in
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every namespace you need to use it.
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## Middleware
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Regardless if you're using the [Traefik Kubernetes Ingress] or purely the [Traefik Kubernetes CRD], you must configure
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the [Traefik Kubernetes CRD] as far as we're aware at this time in order to configure a [ForwardAuth] [Middleware].
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This is an example [Middleware] manifest. This eample assumes that you have deployed an Authelia pod and you have
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configured it to be served on the URL `https://auth.example.com` and there is a Kubernetes Service with the name
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`authelia` in the `default` namespace with TCP port `80` configured to route to the Authelia pod's HTTP port and that
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your cluster is configured with the default DNS domain name of `cluster.local`.
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```yaml
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apiVersion: traefik.containo.us/v1alpha1
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kind: Middleware
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metadata:
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labels:
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app.kubernetes.io/instance: authelia
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app.kubernetes.io/name: authelia
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argocd.argoproj.io/instance: authelia
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name: forwardauth-authelia
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namespace: default
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spec:
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forwardAuth:
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address: http://authelia.default.svc.cluster.local/api/verify?rd=https%3A%2F%2Fauth.example.com%2F
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authResponseHeaders:
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- Remote-User
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- Remote-Name
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- Remote-Email
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- Remote-Groups
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```
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## Ingress
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This is an example Ingress manifest which uses the above [Middleware](#middleware). This example assumes you have an
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application you wish to serve on `https://app.example.com` and there is a Kubernetes Service with the name `app` in the
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`default` namespace with TCP port `80` configured to route to the application pod's HTTP port.
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```yaml
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: app
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namespace: default
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annotations:
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traefik.ingress.kubernetes.io/router.entrypoints: websecure
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traefik.ingress.kubernetes.io/router.middlewares: default-forwardauth-authelia@kubernetescrd
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traefik.ingress.kubernetes.io/router.tls: "true"
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spec:
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rules:
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- host: app.example.com
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http:
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paths:
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- path: /bar
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pathType: Prefix
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backend:
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service:
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name: app
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port:
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number: 80
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```
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## IngressRoute
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This is an example IngressRoute manifest which uses the above [Middleware](#middleware). This example assumes you have an
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application you wish to serve on `https://app.example.com` and there is a Kubernetes Service with the name `app` in the
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`default` namespace with TCP port `80` configured to route to the application pod's HTTP port.
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```yaml
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apiVersion: traefik.containo.us/v1alpha1
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kind: IngressRoute
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metadata:
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name: app
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namespace: default
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spec:
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entryPoints:
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- websecure
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routes:
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- kind: Rule
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match: Host(`app.example.com`)
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middlewares:
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- name: forwardauth-authelia
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namespace: default
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services:
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- kind: Service
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name: app
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namespace: default
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port: 80
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scheme: http
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strategy: RoundRobin
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weight: 10
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```
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[Traefik Kubernetes Ingress]: https://doc.traefik.io/traefik/providers/kubernetes-ingress/
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[Traefik Kubernetes CRD]: https://doc.traefik.io/traefik/providers/kubernetes-crd/
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[Middleware]: https://doc.traefik.io/traefik/middlewares/overview/
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[ForwardAuth]: https://doc.traefik.io/traefik/middlewares/http/forwardauth/
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