Merge pull request #56994 from amolnar-rh/TELCODOCS-1150

TELCODOCS-1150: nmstateconfig update for day2 worker on DHCP subnet

Author: jab-rh

modules/sno-adding-worker-nodes-to-sno-clusters-manually.adoc

@@ -164,6 +164,38 @@ where:
 $ coreos-installer install --ignition-url=<hosted_worker_ign_file> <hard_disk>
 ----
 
+.. To manually enable DHCP, apply the following `NMStateConfig` CR to the {sno} cluster:
++
+[source,yaml]
+----
+apiVersion: agent-install.openshift.io/v1
+kind: NMStateConfig
+metadata:
+  name: nmstateconfig-dhcp
+  namespace: example-sno
+  labels:
+    nmstate_config_cluster_name: <nmstate_config_cluster_label>
+spec:
+  config:
+    interfaces:
+      - name: eth0
+        type: ethernet
+        state: up
+        ipv4:
+          enabled: true
+          dhcp: true
+        ipv6:
+          enabled: false
+  interfaces:
+    - name: "eth0"
+      macAddress: "AA:BB:CC:DD:EE:11"
+----
++
+[IMPORTANT]
+====
+The `NMStateConfig` CR is required for successful deployments of worker nodes with static IP addresses and for adding a worker node with a dynamic IP address if the {sno} was deployed with a static IP address. The cluster network DHCP does not automatically set these network settings for the new worker node.
+====
+
 . As the installation proceeds, the installation generates pending certificate signing requests (CSRs) for the worker node. When prompted, approve the pending CSRs to complete the installation.
 
 . When the install is complete, reboot the host. The host joins the cluster as a new worker node.

modules/ztp-installation-crs.adoc

@@ -37,7 +37,7 @@ The following table lists the installation CRs that are automatically applied by
 |Used with `InfraEnv` to generate the discovery ISO for the managed cluster.
 
 |`NMStateConfig`
-|Provides network configuration information such as `MAC` address to `IP` mapping, DNS server, default route, and other network settings. This is not needed if DHCP is used.
+|Provides network configuration information such as `MAC` address to `IP` mapping, DNS server, default route, and other network settings.
 |Sets up a static IP address for the managed cluster’s Kube API server.
 
 |`Agent`