BZ2015178: Added note about Node Health Check Operator

Author: Shikha Jhala

virt/install/preparing-cluster-for-virt.adoc

@@ -23,11 +23,12 @@ xref:../../installing/installing_bare_metal/preparing-to-install-on-bare-metal.a
 ifdef::openshift-enterprise[]
 :FeatureName: Installing OpenShift Virtualization on AWS bare metal instances
 include::snippets/technology-preview.adoc[leveloffset=+2]
+:!FeatureName:
 endif::[]
 --
 
 
-* Additionally, there are two options to maintain high availability (HA) of virtual machines:
+* Additionally, there are three options to maintain high availability (HA) of virtual machines:
 
 ** Use xref:../../installing/installing_bare_metal_ipi/ipi-install-overview.adoc#ipi-install-overview[installer-provisioned infrastructure] and xref:../../machine_management/deploying-machine-health-checks.adoc#machine-health-checks-about_deploying-machine-health-checks[deploy machine health checks].
 +
@@ -43,6 +44,16 @@ In {VirtProductName} clusters installed using installer-provisioned infrastructu
 Without an external monitoring system or a qualified human monitoring node health, virtual machines lose high availability.
 ====
 
+** Use the xref:../../nodes/nodes/eco-node-health-check-operator.adoc#node-health-check-operator[Node Health Check Operator] on any {product-title} cluster to deploy the `NodeHealthCheck` controller. The controller identifies unhealthy nodes and uses the Poison Pill Operator to remediate the unhealthy nodes.
++
+--
+ifdef::openshift-enterprise[]
+:FeatureName: Node Health Check Operator
+include::snippets/technology-preview.adoc[leveloffset=+2]
+:!FeatureName:
+endif::[]
+--
+
 * Shared storage is required to enable live migration.
 
 * You must manage your Compute nodes according to the number and size of the virtual machines that you want to host in the cluster.