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chunking related faq update (#11196)
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@@ -7,27 +7,51 @@ Please read [Retain Client IPAddress Guide here](./user-guide/retaining-client-i | |
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| ## Kubernetes v1.22 Migration | ||
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| If you are using Ingress objects in your cluster (running Kubernetes older than v1.22), and you plan to upgrade your Kubernetes version to K8S 1.22 or above, then please read [the migration guide here](./user-guide/k8s-122-migration.md). | ||
| If you are using Ingress objects in your cluster (running Kubernetes older than | ||
| version 1.22), and you plan to upgrade your Kubernetes version to K8S 1.22 or | ||
| above, then please read [the migration guide here](./user-guide/k8s-122-migration.md). | ||
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| ## Validation Of __`path`__ | ||
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| - For improving security and also following desired standards on Kubernetes API spec, the next release, scheduled for v1.8.0, will include a new & optional feature of validating the value for the key `ingress.spec.rules.http.paths.path` . | ||
| - For improving security and also following desired standards on Kubernetes API | ||
| spec, the next release, scheduled for v1.8.0, will include a new & optional | ||
| feature of validating the value for the key `ingress.spec.rules.http.paths.path`. | ||
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| - This behavior will be disabled by default on the 1.8.0 release and enabled by default on the next breaking change release, set for 2.0.0. | ||
| - This behavior will be disabled by default on the 1.8.0 release and enabled by | ||
| default on the next breaking change release, set for 2.0.0. | ||
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| - When "`ingress.spec.rules.http.pathType=Exact`" or "`pathType=Prefix`", this validation will limit the characters accepted on the field "`ingress.spec.rules.http.paths.path`", to "`alphanumeric characters`", and `"/," "_," "-."` Also, in this case, the path should start with `"/."` | ||
| - When "`ingress.spec.rules.http.pathType=Exact`" or "`pathType=Prefix`", this | ||
| validation will limit the characters accepted on the field "`ingress.spec.rules.http.paths.path`", | ||
| to "`alphanumeric characters`", and `"/," "_," "-."` Also, in this case, | ||
| the path should start with `"/."` | ||
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| - When the ingress resource path contains other characters (like on rewrite configurations), the pathType value should be "`ImplementationSpecific`". | ||
| - When the ingress resource path contains other characters (like on rewrite | ||
| configurations), the pathType value should be "`ImplementationSpecific`". | ||
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| - API Spec on pathType is documented [here](https://kubernetes.io/docs/concepts/services-networking/ingress/#path-types) | ||
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| - When this option is enabled, the validation will happen on the Admission Webhook. So if any new ingress object contains characters other than "`alphanumeric characters`", and `"/," "_," "-."` , in the `path` field, but is not using `pathType` value as `ImplementationSpecific`, then the ingress object will be denied admission. | ||
| - When this option is enabled, the validation will happen on the Admission | ||
| Webhook. So if any new ingress object contains characters other than | ||
| alphanumeric characters, and, `"/,","_","-"`, in the `path` field, but | ||
| is not using `pathType` value as `ImplementationSpecific`, then the ingress | ||
| object will be denied admission. | ||
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| - The cluster admin should establish validation rules using mechanisms like "`Open Policy Agent`", to validate that only authorized users can use ImplementationSpecific pathType and that only the authorized characters can be used. [The configmap value is here](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#strict-validate-path-type) | ||
| - The cluster admin should establish validation rules using mechanisms like | ||
| "`Open Policy Agent`", to validate that only authorized users can use | ||
| ImplementationSpecific pathType and that only the authorized characters can be | ||
| used. [The configmap value is here](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#strict-validate-path-type) | ||
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| - A complete example of an Openpolicyagent gatekeeper rule is available [here](https://kubernetes.github.io/ingress-nginx/examples/openpolicyagent/) | ||
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| - If you have any issues or concerns, please do one of the following: | ||
| - Open a GitHub issue | ||
| - If you have any issues or concerns, please do one of the following: | ||
| - Open a GitHub issue | ||
| - Comment in our Dev Slack Channel | ||
| - Open a thread in our Google Group [email protected] | ||
| - Open a thread in our Google Group <[email protected]> | ||
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| ## Why is chunking not working since controller v1.10 ? | ||
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| - If your code is setting the HTTP header `"Transfer-Encoding: chunked"` and | ||
| the controller log messages show an error about duplicate header, it is | ||
| because of this change <http://hg.nginx.org/nginx/rev/2bf7792c262e> | ||
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| - More details are available in this issue <https://github.com/kubernetes/ingress-nginx/issues/11162> | ||