I have setup of two RH-SSO nodes with wildfly balancer. Each node is on separate physical machine with binded IP.

balancer:
standalone -c standalone.xml -b 10.16.88.190 -bmanagement 0.0.0.0 -bprivate 10.16.88.190 -u 224.0.1.205 -Djboss.socket.binding.port-offset=0

node1:
standalone -c standalone-ha.xml -b 10.16.88.191 -bmanagement 0.0.0.0 -bprivate 10.16.88.191 -u 224.0.1.205 -Djboss.socket.binding.port-offset=0 -Djboss.node.name=perf13

node2:
standalone -c standalone-ha.xml -b 10.16.88.192 -bmanagement 0.0.0.0 -bprivate 10.16.88.192 -u 224.0.1.205 -Djboss.socket.binding.port-offset=0 -Djboss.node.name=perf14

1. Navigate to http://10.16.88.190:8080/auth, welcome page with form for creating admin user is displayed (it shouldn't be, because I not accessing the localhost). NOT OK

2. I try to create the admin user and it fails with attached exception. NOT OK

3. I try to navigate to admin console if the user was created. Login fails - the user was not created - OK

4. Go to http://10.16.88.190:8080/auth again, welcome page displayed, try to create user - user created without exception. Login to admin console passed - NOT OK

The logs, standalone-ha.xml attached. In the server logs there are many "ISPN000197" exceptions - this is EAP's bug already filed, which is harmless (discussed with EAP QE)

If I create the setup with keycloak-add-user.json included in the server configuration dir, everything works as expected.