MBean jboss.as vanished after migration from Wildfly-10 to Wildfly-12

[gjaekel]

If I change my application servers to use Wildfly-12.0.0 instead of Wildfly-10.1.0, all installed Applications seem to work well: They start at least for now and are ready for use case testing by others.

But if I want to access the MBean jboss.as, e.g. with the MBean-Browser of jVisualVM, it is either not listed. Or an error WFLYJMX0017 is displayed. In comparison to WF-10, the MBean jboss.jmx77 isn't listed at all.

Please, how to solve or debug this issue? As an example, i've attached the configuration of one of the servers (at testing stage) as a "simple" case: It's currently running just a small number of instances of one application.

[ehugonnet]

What happens if you don't use RBAC but simple for access-control ?

[gjaekel]

A quick test -- just changing the attribute in the config -- shows that this trigger the issue!

[gjaekel]

So this is a bug? Is it reflated / corresponding to 

• https://issues.jboss.org/browse/WFCORE-2061
• [JBEAP-13844] [GSS](7.1.z) Can not get core MBeans such as jboss.as and jboss.as.expr from application on EAP when RBAC …
• [JBEAP-13845] [GSS](7.2.0) Can not get core MBeans such as jboss.as and jboss.as.expr from application on EAP when RBAC …

The JBEAP-Issues mention a strange workaround: Adding the User "anonymous" to the rule Monitor will make the MBeans appear!

<access-control provider="rbac">
    <role-mapping>
        <role name="SuperUser">
            <include>
                <user name="$local"/>
                <user name="wild"/>
                <user name="root"/>
                <user name="admin"/>
            </include>
        </role> 
        <role name="Monitor">
            <include>
                <user name="dnb"/>
                <user name="anonymous"/>   <--- this will work around the issue and make the MBean appear again!
            </include>
        </role> 
    </role-mapping>
</access-control>

This User is not need to inclueded in the  mgmt-users.properties  or  mgmt-groups.properties files!