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Document custom k8s ingress class usage in guide.

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Timo Reimann 2018-04-30 20:28:03 +02:00 committed by Traefiker Bot
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docs/user-guide/kubernetes.md
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@ -350,7 +350,8 @@ We should now be able to visit [traefik-ui.minikube](http://traefik-ui.minikube)
### Add a TLS Certificate to the Ingress
!!! note
For this example to work you need a TLS entrypoint. You don't have to provide a TLS certificate at this point. For more details see [here](/configuration/entrypoints/).
For this example to work you need a TLS entrypoint. You don't have to provide a TLS certificate at this point.
For more details see [here](/configuration/entrypoints/).
To setup an HTTPS-protected ingress, you can leverage the TLS feature of the ingress resource.
@ -374,7 +375,8 @@ spec:
- secretName: traefik-ui-tls-cert
```
In addition to the modified ingress you need to provide the TLS certificate via a Kubernetes secret in the same namespace as the ingress. The following two commands will generate a new certificate and create a secret containing the key and cert files.
In addition to the modified ingress you need to provide the TLS certificate via a Kubernetes secret in the same namespace as the ingress.
The following two commands will generate a new certificate and create a secret containing the key and cert files.
```shell
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout tls.key -out tls.crt -subj "/CN=traefik-ui.minikube"
@ -384,13 +386,16 @@ kubectl -n kube-system create secret tls traefik-ui-tls-cert --key=tls.key --cer
If there are any errors while loading the TLS section of an ingress, the whole ingress will be skipped.
!!! note
The secret must have two entries named `tls.key`and `tls.crt`. See the [Kubernetes documentation](https://kubernetes.io/docs/concepts/services-networking/ingress/#tls) for more details.
The secret must have two entries named `tls.key`and `tls.crt`.
See the [Kubernetes documentation](https://kubernetes.io/docs/concepts/services-networking/ingress/#tls) for more details.
!!! note
The TLS certificates will be added to all entrypoints defined by the ingress annotation `traefik.frontend.entryPoints`. If no such annotation is provided, the TLS certificates will be added to all TLS-enabled `defaultEntryPoints`.
The TLS certificates will be added to all entrypoints defined by the ingress annotation `traefik.frontend.entryPoints`.
If no such annotation is provided, the TLS certificates will be added to all TLS-enabled `defaultEntryPoints`.
!!! note
The field `hosts` in the TLS configuration is ignored. Instead, the domains provided by the certificate are used for this purpose. It is recommended to not use wildcard certificates as they will match globally.
The field `hosts` in the TLS configuration is ignored. Instead, the domains provided by the certificate are used for this purpose.
It is recommended to not use wildcard certificates as they will match globally.
## Basic Authentication
@ -831,13 +836,21 @@ Sometimes Træfik runs along other Ingress controller implementations. One such
The `kubernetes.io/ingress.class` annotation can be attached to any Ingress object in order to control whether Træfik should handle it.
If the annotation is missing, contains an empty value, or the value `traefik`, then the Træfik controller will take responsibility and process the associated Ingress object. If the annotation contains any other value (usually the name of a different Ingress controller), Træfik will ignore the object.
If the annotation is missing, contains an empty value, or the value `traefik`, then the Træfik controller will take responsibility and process the associated Ingress object.
If the annotation contains any other value (usually the name of a different Ingress controller), Træfik will ignore the object.
It is also possible to set the `ingressClass` option in Træfik to a particular value.
If that's the case and the value contains a `traefik` prefix, then only those Ingress objects matching the same value will be processed.
For instance, setting the option to `traefik-internal` causes Træfik to process Ingress objects with the same `kubernetes.io/ingress.class` annotation value, ignoring all other objects (including those with a `traefik` value, empty value, and missing annotation).
### Between multiple Træfik Deployments
Sometimes multiple Træfik Deployments are supposed to run concurrently. For instance, it is conceivable to have one Deployment deal with internal and another one with external traffic.
Sometimes multiple Træfik Deployments are supposed to run concurrently.
For instance, it is conceivable to have one Deployment deal with internal and another one with external traffic.
For such cases, it is advisable to classify Ingress objects through a label and configure the `labelSelector` option per each Træfik Deployment accordingly. To stick with the internal/external example above, all Ingress objects meant for internal traffic could receive a `traffic-type: internal` label while objects designated for external traffic receive a `traffic-type: external` label. The label selectors on the Træfik Deployments would then be `traffic-type=internal` and `traffic-type=external`, respectively.
For such cases, it is advisable to classify Ingress objects through a label and configure the `labelSelector` option per each Træfik Deployment accordingly.
To stick with the internal/external example above, all Ingress objects meant for internal traffic could receive a `traffic-type: internal` label while objects designated for external traffic receive a `traffic-type: external` label.
The label selectors on the Træfik Deployments would then be `traffic-type=internal` and `traffic-type=external`, respectively.
## Production advice