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Adding AppProtocol documentation for 1.18 (#19317)

pull/19349/head
Rob Scott 2020-03-16 08:06:43 -07:00 committed by GitHub
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11
content/en/docs/concepts/services-networking/service.md
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@ -202,6 +202,17 @@ endpoints.
EndpointSlices provide additional attributes and functionality which is
described in detail in [EndpointSlices](/docs/concepts/services-networking/endpoint-slices/).
### Application protocol
{{< feature-state for_k8s_version="v1.18" state="alpha" >}}
The AppProtocol field provides a way to specify an application protocol to be
used for each Service port.
As an alpha feature, this field is not enabled by default. To use this field,
enable the `ServiceAppProtocol` [feature
gate](/docs/reference/command-line-tools-reference/feature-gates/).
## Virtual IPs and service proxies
Every node in a Kubernetes cluster runs a `kube-proxy`. `kube-proxy` is

2
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@ -124,6 +124,7 @@ different Kubernetes components.
| `RuntimeClass` | `false` | Alpha | 1.12 | 1.13 |
| `RuntimeClass` | `true` | Beta | 1.14 | |
| `SCTPSupport` | `false` | Alpha | 1.12 | |
| `ServiceAppProtocol` | `false` | Alpha | 1.18 | |
| `ServerSideApply` | `false` | Alpha | 1.14 | 1.15 |
| `ServerSideApply` | `true` | Beta | 1.16 | |
| `ServiceNodeExclusion` | `false` | Alpha | 1.8 | |
@ -458,6 +459,7 @@ Each feature gate is designed for enabling/disabling a specific feature:
- `ScheduleDaemonSetPods`: Enable DaemonSet Pods to be scheduled by the default scheduler instead of the DaemonSet controller.
- `SCTPSupport`: Enables the usage of SCTP as `protocol` value in `Service`, `Endpoint`, `NetworkPolicy` and `Pod` definitions
- `ServerSideApply`: Enables the [Sever Side Apply (SSA)](/docs/reference/using-api/api-concepts/#server-side-apply) path at the API Server.
- `ServiceAppProtocol`: Enables the `AppProtocol` field on Services and Endpoints.
- `ServiceLoadBalancerFinalizer`: Enable finalizer protection for Service load balancers.
- `ServiceNodeExclusion`: Enable the exclusion of nodes from load balancers created by a cloud provider.
A node is eligible for exclusion if labelled with "`alpha.service-controller.kubernetes.io/exclude-balancer`" key or `node.kubernetes.io/exclude-from-external-load-balancers`.