Add docs to skip OpenAPI validation

deployments/helm-chart/README.md

@@ -39,6 +39,11 @@ $ helm repo update
 
 ### Installing the CRDs
 
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl create` command below. Otherwise, you will get an error validating data:
+```
+ValidationError(CustomResourceDefinition.spec): unknown field "preserveUnknownFields" in io.k8s.apiextensions-apiserver.pkg.apis.api extensions.v1beta1.CustomResourceDefinitionSpec
+```
+
 By default, the Ingress Controller requires a number of custom resource definitions (CRDs) installed in the cluster. Helm 3.x client will install those CRDs. If you're using a Helm 2.x client, you need to install the CRDs via `kubectl`:
 
 ```console
@@ -113,6 +118,8 @@ To install the chart with the release name my-release (my-release is the name th
 
 ### Upgrading the CRDs
 
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl apply` command below.
+
 Helm does not upgrade the CRDs during a release upgrade. Before you upgrade a release, run the following command to upgrade the CRDs:
 
 ```console
@@ -248,7 +255,7 @@ Parameter | Description | Default
 `controller.pod.annotations` | The annotations of the Ingress Controller pod. | {}
 `controller.appprotect.enable` | Enables the App Protect module in the Ingress Controller. | false
 `controller.readyStatus.enable` | Enables the readiness endpoint `"/nginx-ready"`. The endpoint returns a success code when NGINX has loaded all the config after the startup. This also configures a readiness probe for the Ingress Controller pods that uses the readiness endpoint. | true
-`controller.readyStaus.port` | The HTTP port for the readiness endpoint. | 8081
+`controller.readyStatus.port` | The HTTP port for the readiness endpoint. | 8081
 `rbac.create` | Configures RBAC. | true
 `prometheus.create` | Expose NGINX or NGINX Plus metrics in the Prometheus format. | false
 `prometheus.port` | Configures the port to scrape the metrics. | 9113

docs-web/installation/installation-with-helm.md

@@ -37,6 +37,11 @@ $ helm repo update
 
 ### Installing the CRDs
 
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl create` command below. Otherwise, you will get an error validating data:
+```
+ValidationError(CustomResourceDefinition.spec): unknown field "preserveUnknownFields" in io.k8s.apiextensions-apiserver.pkg.apis.api extensions.v1beta1.CustomResourceDefinitionSpec
+```
+
 By default, the Ingress Controller requires a number of custom resource definitions (CRDs) installed in the cluster. Helm 3.x client will install those CRDs. If you're using a Helm 2.x client, you need to install the CRDs via `kubectl`:
 
 ```console
@@ -111,6 +116,8 @@ To install the chart with the release name my-release (my-release is the name th
 
 ### Upgrading the CRDs
 
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl apply` command below.
+
 Helm does not upgrade the CRDs during a release upgrade. Before you upgrade a release, run the following command to upgrade the CRDs:
 
 ```console
@@ -380,7 +387,7 @@ The following tables lists the configurable parameters of the NGINX Ingress cont
    * - ``controller.readyStatus.enable``
      - Enables the readiness endpoint `"/nginx-ready"`. The endpoint returns a success code when NGINX has loaded all the config after the startup. This also configures a readiness probe for the Ingress Controller pods that uses the readiness endpoint.
      - true
-   * - ``controller.readyStaus.port``
+   * - ``controller.readyStatus.port``
      - The HTTP port for the readiness endpoint.
      - 8081
    * - ``rbac.create``

docs-web/installation/installation-with-manifests.md

@@ -47,6 +47,13 @@ In this section, we create resources common for most of the Ingress Controller i
     $ kubectl apply -f common/nginx-config.yaml
     ```
 
+### Create Custom Resources
+
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl apply` commands below. Otherwise, you will get an error validating data:
+```
+ValidationError(CustomResourceDefinition.spec): unknown field "preserveUnknownFields" in io.k8s.apiextensions-apiserver.pkg.apis.api extensions.v1beta1.CustomResourceDefinitionSpec
+```
+
 1. Create custom resource definitions for [VirtualServer and VirtualServerRoute](/nginx-ingress-controller/configuration/virtualserver-and-virtualserverroute-resources), [TransportServer](/nginx-ingress-controller/configuration/transportserver-resource) and [Policy](/nginx-ingress-controller/configuration/policy-resource) resources:
     ```
     $ kubectl apply -f common/vs-definition.yaml
@@ -70,6 +77,8 @@ If you would like to use the TCP and UDP load balancing features of the Ingress
 
 ### Resources for NGINX App Protect
 
+**Note**: If you're using Kubernetes 1.14, make sure to add `--validate=false` to the `kubectl apply` commands below.
+
 If you would like to use the App Protect module, create the following additional resources:
 
 1. Create a custom resource definition for `APPolicy` and `APLogConf`: