[mkopecky@dhcp-10-40-4-180 bin]$ ./jboss-cli.sh -c
[standalone@localhost:9990 /] /core-service=management/management-interface=http-interface:undefine-attribute(name=security-realm)
{
    "outcome" => "success",
    "response-headers" => {
        "operation-requires-reload" => true,
        "process-state" => "reload-required"
    }
}
[standalone@localhost:9990 /] reload
Interrupted while pausing before reconnecting.: sleep interrupted
[disconnected /] 
[mkopecky@dhcp-10-40-4-180 bin]$ ./jboss-cli.sh -c
Failed to connect to the controller: Unable to authenticate against controller at localhost:9990: Authentication failed: none of the mechanisms presented by the server are supported
[mkopecky@dhcp-10-40-4-180 bin]$