update upgrade docs (#7036)

Author: vepatel

site/content/includes/installation/create-custom-resources.md

@@ -32,6 +32,10 @@ kubectl apply -f https://raw.githubusercontent.com/nginxinc/kubernetes-ingress/v
 
 {{< note >}} If you are installing the CRDs this way, ensure you have first cloned the repository. {{< /note >}}
 
+{{< note >}} Please make sure to read the steps outlined in [Upgrade to V4](https://docs.nginx.com/nginx-ingress-controller/installation/installing-nic/upgrade-to-v4/#update-custom-resource-apiversion) before running the CRD upgrade and perform the steps if applicable.
+{{< /note >}}
+
+
 ```shell
 kubectl apply -f config/crd/bases/k8s.nginx.org_virtualservers.yaml
 kubectl apply -f config/crd/bases/k8s.nginx.org_virtualserverroutes.yaml

site/content/installation/installing-nic/installation-with-helm.md

@@ -34,6 +34,9 @@ If you do not use the custom resources that require those CRDs (which correspond
 
 ### Upgrade the CRDs
 
+{{< note >}} Please make sure to read the steps outlined in [Upgrade to V4](https://docs.nginx.com/nginx-ingress-controller/installation/installing-nic/upgrade-to-v4/#update-custom-resource-apiversion) before running the CRD upgrade and perform the steps if applicable.
+{{< /note >}}
+
 To upgrade the CRDs, pull the chart sources as described in [Pull the Chart](#pull-the-chart) and then run:
 
 ```shell

site/content/installation/installing-nic/upgrade-to-v4.md

@@ -19,7 +19,7 @@ For NGINX Plus users, there is a third step to create a Secret for your license.
 
 If the Helm chart you have been using is `v2.x`, before upgrading to NGINX Ingress Controller 4.0.0 you must update your GlobalConfiguration, Policy and TransportServer resources from `apiVersion: k8s.nginx.org/v1alpha1` to `apiVersion: k8s.nginx.org/v1`.
 
-If the Helm chart you have been using is `v1.0.2` or earlier (NGINX Ingress Controller `v3.2.2`), upgrade to Helm chart `v1.4.2` (NGINX Ingress Controller `v3.7.2`) before updating your GlobalConfiguration, Policy and TransportServer resources.
+If the Helm chart you have been using is `v1.0.2` or earlier (NGINX Ingress Controller `v3.3.2`), upgrade to Helm chart `v1.4.2` (NGINX Ingress Controller `v3.7.2`) before updating your GlobalConfiguration, Policy and TransportServer resources.
 
 The example below shows the change for a Policy resource: you must do the same for all GlobalConfiguration and TransportServer resources.
 
@@ -61,6 +61,16 @@ spec:
 If a *GlobalConfiguration*, *Policy* or *TransportServer* resource is deployed with `apiVersion: k8s.nginx.org/v1alpha1`, it will be **deleted** during the upgrade process.
 {{</ warning >}}
 
+Once above specified custom resources are moved to `v1` ,please run below `kubectl` commands before upgrading to v4.0.0 Custom Resource Definitions (CRDs) to avoid [this issue](https://github.com/nginxinc/kubernetes-ingress/issues/7010).
+ 
+```shell
+kubectl patch customresourcedefinitions transportservers.k8s.nginx.org --subresource='status' --type='merge' -p '{"status":{"storedVersions": ["v1"]}}'
+```
+
+```shell
+kubectl patch customresourcedefinitions globalconfigurations.k8s.nginx.org --subresource='status' --type='merge' -p '{"status":{"storedVersions": ["v1"]}}'
+```
+
 ---
 
 ## Configure structured logging