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rm'd toc, restructured page so top section becomes a note

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this was done because a section was missing even though it was still in the toc.

Also: the page title is 'Ingress Configuration'. Having the subsection that contains the toc have a similar title is confusing.
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martyav
2023-01-23 15:06:30 -05:00
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versioned_docs/version-2.6/how-to-guides/new-user-guides/kubernetes-resources-setup/load-balancer-and-ingress-controller/ingress-configuration.md
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@@ -3,44 +3,46 @@ title: Ingress Configuration
description: Ingress configuration
---
### NGINX Ingress controller changes in Kubernetes v1.21
:::note
For Kubernetes v1.21 and up, the NGINX Ingress controller no longer runs in hostNetwork by default. It instead uses hostPorts for port 80 and port 443, so you can configure the admission webhook to be accessible only through the ClusterIP. This ensures that the webhook is only accessible from within the cluster.
Because of this change to the controller, the default behavior no longer sets `hostNetwork` to `true`. However, you must set `hostNetwork` to `true` for TCP- and UDP-based Services to work.
## Ingress Rule Configuration
:::note
- [Specify a hostname to use](#specify-a-hostname-to-use)
- [Use as the default backend](#use-as-the-default-backend)
- [Certificates](#certificates)
- [Labels and Annotations](#labels-and-annotations)
### Specify a hostname to use
## Specify a hostname to use
If you use this option, ingress routes requests for a hostname to the service or workload that you specify.
If you use this option, Ingress routes requests for a hostname to the service or workload that you specify.
1. Enter the **Request Host** that your ingress will handle request forwarding for. For example, `www.mysite.com`.
1. Enter the **Request Host** that your Ingress controller will handle request forwarding for. For example, `www.mysite.com`.
1. Specify a path of type `Prefix` and a specify a path such as `/`.
2. Add a **Target Service**.
3. **Optional:** If you want specify a workload or service when a request is sent to a particular hostname path, add a **Path** for the target. For example, if you want requests for `www.mysite.com/contact-us` to be sent to a different service than `www.mysite.com`, enter `/contact-us` in the **Path** field. Typically, the first rule that you create does not include a path.
3. **Optional:** If you want to specify a workload or service when a request is sent to a particular hostname path, add a **Path** for the target. For example, if you want requests for `www.mysite.com/contact-us` to be sent to a different service than `www.mysite.com`, enter `/contact-us` in the **Path** field. The first rule that you create does not typically include a path.
4. Enter the **Port** number that each target operates on.
### Certificates
## Certificates
:::note
You must have an SSL certificate that the ingress can use to encrypt/decrypt communications. For more information see [Adding SSL Certificates](../encrypt-http-communication.md).
You must have an SSL certificate that the Ingress controller can use to encrypt/decrypt communications. For more information, see [Adding SSL Certificates](../encrypt-http-communication.md).
:::
1. When creating an ingress, click the **Certificates** tab.
1. To create an Ingress controller, click the **Certificates** tab.
1. Click **Add Certificate**.
1. Select a **Certificate - Secret Name** from the drop-down list.
1. Enter the host using encrypted communication.
1. To add additional hosts that use the certificate, click **Add Hosts**.
### Labels and Annotations
## Labels and Annotations
Add [Labels](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/) and/or [Annotations](https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/) to provide metadata for your ingress.
Add [Labels](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/) and/or [Annotations](https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/) to provide metadata for your Ingress Controller.
For a list of annotations available for use, see the [Nginx Ingress Controller Documentation](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/).