[root@HACPXKE64 /var/log/rabbitmq]# rabbitmqctl environment
Application environment of node rabbit@HACPXKE64 ...
[{amqp_client,[{prefer_ipv6,false},{ssl_options,[]}]},
 {asn1,[]},
 {compiler,[]},
 {crypto,[]},
 {inets,[]},
 {kernel,
     [{error_logger,tty},
      {inet_default_connect_options,[{nodelay,true}]},
      {inet_dist_listen_max,25672},
      {inet_dist_listen_min,25672}]},
 {mnesia,[{dir,"/var/lib/rabbitmq/mnesia/rabbit@HACPXKE64"}]},
 {mochiweb,[]},
 {os_mon,
     [{start_cpu_sup,false},
      {start_disksup,false},
      {start_memsup,false},
      {start_os_sup,false}]},
 {public_key,[]},
 {rabbit,
     [{auth_backends,[rabbit_auth_backend_internal]},
      {auth_mechanisms,['PLAIN','AMQPLAIN']},
      {backing_queue_module,rabbit_priority_queue},
      {channel_max,0},
      {channel_operation_timeout,15000},
      {cluster_keepalive_interval,10000},
      {cluster_nodes,{[],disc}},
      {cluster_partition_handling,ignore},
      {collect_statistics,fine},
      {collect_statistics_interval,5000},
      {credit_flow_default_credit,{200,50}},
      {default_permissions,[<<".*">>,<<".*">>,<<".*">>]},
      {default_user,<<"guest">>},
      {default_user_tags,[administrator]},
      {default_vhost,<<"/">>},
      {delegate_count,16},
      {disk_free_limit,50000000},
      {enabled_plugins_file,"/etc/rabbitmq/enabled_plugins"},
      {error_logger,{file,"/var/log/rabbitmq/rabbit@HACPXKE64.log"}},
      {fhc_read_buffering,false},
      {fhc_write_buffering,true},
      {frame_max,131072},
      {halt_on_upgrade_failure,true},
      {handshake_timeout,10000},
      {heartbeat,60},
      {hipe_compile,false},
      {hipe_modules,
          [rabbit_reader,rabbit_channel,gen_server2,rabbit_exchange,
           rabbit_command_assembler,rabbit_framing_amqp_0_9_1,rabbit_basic,
           rabbit_event,lists,queue,priority_queue,rabbit_router,rabbit_trace,
           rabbit_misc,rabbit_binary_parser,rabbit_exchange_type_direct,
           rabbit_guid,rabbit_net,rabbit_amqqueue_process,
           rabbit_variable_queue,rabbit_binary_generator,rabbit_writer,
           delegate,gb_sets,lqueue,sets,orddict,rabbit_amqqueue,
           rabbit_limiter,gb_trees,rabbit_queue_index,
           rabbit_exchange_decorator,gen,dict,ordsets,file_handle_cache,
           rabbit_msg_store,array,rabbit_msg_store_ets_index,rabbit_msg_file,
           rabbit_exchange_type_fanout,rabbit_exchange_type_topic,mnesia,
           mnesia_lib,rpc,mnesia_tm,qlc,sofs,proplists,credit_flow,pmon,
           ssl_connection,tls_connection,ssl_record,tls_record,gen_fsm,ssl]},
      {log_levels,[{connection,info}]},
      {loopback_users,[]},
      {memory_monitor_interval,2500},
      {mirroring_flow_control,true},
      {mirroring_sync_batch_size,4096},
      {mnesia_table_loading_timeout,30000},
      {msg_store_credit_disc_bound,{2000,500}},
      {msg_store_file_size_limit,16777216},
      {msg_store_index_module,rabbit_msg_store_ets_index},
      {msg_store_io_batch_size,2048},
      {num_ssl_acceptors,1},
      {num_tcp_acceptors,10},
      {password_hashing_module,rabbit_password_hashing_sha256},
      {plugins_dir,"/usr/lib/rabbitmq/lib/rabbitmq_server-3.6.4/plugins"},
      {plugins_expand_dir,
          "/var/lib/rabbitmq/mnesia/rabbit@HACPXKE64-plugins-expand"},
      {queue_index_embed_msgs_below,4096},
      {queue_index_max_journal_entries,32768},
      {reverse_dns_lookups,false},
      {sasl_error_logger,{file,"/var/log/rabbitmq/rabbit@HACPXKE64-sasl.log"}},
      {server_properties,[]},
      {ssl_allow_poodle_attack,false},
      {ssl_apps,[asn1,crypto,public_key,ssl]},
      {ssl_cert_login_from,distinguished_name},
      {ssl_handshake_timeout,5000},
      {ssl_listeners,[]},
      {ssl_options,[]},
      {tcp_listen_options,
          [{backlog,128},
           {nodelay,true},
           {linger,{true,0}},
           {exit_on_close,false}]},
      {tcp_listeners,[5672]},
      {trace_vhosts,[]},
      {vm_memory_high_watermark,0.4},
      {vm_memory_high_watermark_paging_ratio,0.5}]},
 {rabbit_common,[]},
 {rabbitmq_management,
     [{cors_allow_origins,[]},
      {cors_max_age,1800},
      {http_log_dir,none},
      {listener,[{port,15672}]},
      {load_definitions,none},
      {process_stats_gc_timeout,300000},
      {rates_mode,basic},
      {sample_retention_policies,
          [{global,[{605,5},{3660,60},{29400,600},{86400,1800}]},
           {basic,[{605,5},{3600,60}]},
           {detailed,[{10,5}]}]},
      {stats_event_max_backlog,250}]},
 {rabbitmq_management_agent,[]},
 {rabbitmq_web_dispatch,[]},
 {ranch,[]},
 {sasl,[{errlog_type,error},{sasl_error_logger,false}]},
 {ssl,[]},
 {stdlib,[]},
 {syntax_tools,[]},
 {webmachine,[{error_handler,rabbit_webmachine_error_handler}]},
 {xmerl,[]}]