rabbitmq.conf.central

[
 {rabbitmq_federation,
   [
    {exchanges, [[ {exchange,     "fed-hub"},
                   {virtual_host, "/"},
                   {type,         "topic"},
                   {durable,      true},
                   {auto_delete,  false},
                   {internal,     false},
                   {upstream_set, "upstreams"} ]]
    },
    {upstream_sets, [ {"upstreams", [[ {connection, "upstream-server"},
                                       {exchange,   "fed-hub"},
                                       {max_hops,   1} ]]
                      } ]
    },
    {connections, [ {"upstream-server", [{host,            "ip-10-226-106-49"},
                                         {virtual_host,    "/"},
                                         {prefetch_count,  1000},
                                         {reconnect_delay, 5},
                                         {heartbeat,       1}
                                        ]
                    } ]
    },
    {local_username, "guest"},
    {local_nodename, "central"}
   ]
 }
].