a sample rabbitmq config file, tested with RabbitMQ 3.0.2, Erlang R15B01

rabbitmq.config

[
  {rabbit, [
     {auth_backends, [rabbit_auth_backend_internal]},
     {auth_mechanisms, ['PLAIN','AMQPLAIN']},
     {backing_queue_module, rabbit_variable_queue},
     {cluster_nodes, []},
     {collect_statistics, coarse},
     {collect_statistics_interval, 5000},
     {default_permissions, [<<".*">>,<<".*">>,<<".*">>]},
     {default_user, <<"guest">>},
     {default_user_tags, [administrator]},
     {default_vhost, <<"/">>},
     {delegate_count, 16},
     {error_logger, {file,"/var/log/rabbitmq/rabbit@localhost.log"}},
     {frame_max, 131072},
     {hipe_compile, false},
     {included_applications, []},
     {msg_store_file_size_limit, 16777216},
     {msg_store_index_module, rabbit_msg_store_ets_index},
     {queue_index_max_journal_entries, 262144},
     {sasl_error_logger, {file,"/var/log/rabbitmq/rabbit@localhost-sasl.log"}},
     {server_properties, []},
     {ssl_listeners, []},
     {ssl_options, []},
     {tcp_listen_options,
       [binary,
         {packet, raw},
         {reuseaddr, true},
         {backlog, 128},
         {nodelay, true},
         {exit_on_close, false}]},
     {tcp_listeners, [5672]},
     {trace_vhosts, [<<"/">>]},
     {vm_memory_high_watermark, 0.9},
     {vm_memory_high_watermark_paging_ratio, 0.75},
     {disk_free_limit, {mem_relative, 1.0}}
    ]
  } 
].