De acordo com este post no fórum Gerenciamento do JBoss AS7 no OpenShift? no OpenShift site a porta de gerenciamento não é acessível sem primeiro configurar o encaminhamento de porta no OpenShift:
The JBoss management console has been disabled on the JBoss cartridge embedded in OpenShift.
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The management console is bound to an internal port (9990). To access the JBoss management console, you can use port forwarding:
> rhc port-forward jbosseap Checking available ports ... done Forwarding ports ... To connect to a service running on OpenShift, use the Local address Service Local OpenShift ------- -------------- ---- --------------- java 127.0.0.1:3528 => 127.6.85.1:3528 java 127.0.0.1:4447 => 127.6.85.1:4447 java 127.0.0.1:5445 => 127.6.85.1:5445 java 127.0.0.1:8080 => 127.6.85.1:8080 java 127.0.0.1:9990 => 127.6.85.1:9990 java 127.0.0.1:9999 => 127.6.85.1:9999 Press CTRL-C to terminate port forwarding
While that is running, use a local browser to hit:
http://127.0.0.1:9990/console/App.html
For more details about port forwarding, please refer to: https://www.openshift.com/blogs/getting-started-with-port-forwarding-on-openshift