add loop to uncordon nodes and recover cluster to schedulable state upon restart

Author: kleinffm

modules/graceful-restart.adoc

@@ -149,5 +149,13 @@ ip-10-0-182-134.ec2.internal   Ready    worker   70m   v1.29.4
 ip-10-0-211-16.ec2.internal    Ready    master   82m   v1.29.4
 ip-10-0-250-100.ec2.internal   Ready    worker   69m   v1.29.4
 ----
-
++
 If the cluster did not start properly, you might need to restore your cluster using an etcd backup.
+
+. After the control plane and worker nodes are ready, mark all the nodes in the cluster as schedulable.
+Run the following command:
++
+[source,terminal]
+----
+for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}'); do echo ${node} ; oc adm uncordon ${node} ; done
+----