Merge pull request #31311 from sagidlow/BZ-1892213

BZ1892213: Added an important note

Author: Bob Furu

modules/installation-requirements-user-infra-ibm-z-kvm.adoc

@@ -35,8 +35,7 @@ you install the cluster.
 To improve high availability of your cluster, distribute the control plane machines over different {op-system-base} instances on at least two physical machines.
 ====
 
-The bootstrap, control plane, and compute machines must use the {op-system-first} as the
-operating system.
+The bootstrap, control plane, and compute machines must use {op-system-first} as the operating system.
 
 See link:https://access.redhat.com/articles/rhel-limits[Red Hat Enterprise Linux technology capabilities and limits].
 
@@ -56,7 +55,7 @@ To install on IBM Z under {op-system-base} KVM, you need:
 See link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/configuring_and_managing_virtualization/index#types-of-virtual-machine-network-connections_configuring-virtual-machine-network-connections[Types of virtual network connections].
 
 [id="host-machine-resource-requirements_{context}"]
-== Host machine resource requirements 
+== Host machine resource requirements
 The {op-system-base} KVM host in your environment must meet the following requirements to host the virtual machines that you plan for the {product-title} environment. See link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_virtualization/getting-started-with-virtualization-in-rhel-8_configuring-and-managing-virtualization[Getting started with virtualization].
 
 You can install {product-title} version {product-version} on the following IBM hardware:
@@ -185,4 +184,4 @@ cluster certificate signing requests (CSRs) after installation. The
 that is requested by using kubelet credentials because it cannot confirm that
 the correct machine issued the request. You must determine and implement a
 method of verifying the validity of the kubelet serving certificate requests
-and approving them.
+and approving them.

modules/installation-requirements-user-infra.adoc

@@ -36,6 +36,15 @@ endif::[]
 ifeval::["{context}" == "installing-restricted-networks-bare-metal"]
 :bare-metal:
 endif::[]
+ifeval::["{context}" == "installing-vsphere"]
+:vsphere:
+endif::[]
+ifeval::["{context}" == "installing-vsphere-network-customizations"]
+:vsphere:
+endif::[]
+ifeval::["{context}" == "installing-restricted-networks-vsphere"]
+:vsphere:
+endif::[]
 
 [id="installation-requirements-user-infra_{context}"]
 = Machine requirements for a cluster with user-provisioned infrastructure
@@ -82,6 +91,14 @@ Note that {op-system} is based on {op-system-base-full} 8 and inherits all of it
 endif::[]
 See link:https://access.redhat.com/articles/rhel-limits[Red Hat Enterprise Linux technology capabilities and limits].
 
+ifdef::vsphere[]
+[IMPORTANT]
+====
+All virtual machines must reside in the same datastore and in the same folder as the installer.
+====
+endif::vsphere[]
+
+
 [id="network-connectivity_{context}"]
 == Network connectivity requirements