In the newly added chapter 6.13.4.3. Obtain the List of Node Identifiers of All Running JBoss EAP Instances in Any Cluster that Can Contact the Resource Managers there is following command at the very end:

oc logs eap-jta-crash-rec-26-m0jwh | grep "jboss.node.name = jta-crash-rec2-26-m0jwh"

At first the grep command seems to me senseless (I guess its purpose is to get the jboss.node.name value). So I guess it should be:

oc logs eap-jta-crash-rec-26-m0jwh | grep "jboss.node.name"

Second the node name won't have this "jta-crash-rec2-26-m0jwh" form/value (but I believe it's not needed)