RabbitMQ报错：Error: unable to perform an operation on node 'rabbit@manage01'.

阳光穿透心脏的1/2处 2022-03-14 15:22 1261阅读 0赞

#### 安装完成之后问题描述： ####

1、打开http://ip:15672/\#/ 后台管理页面会很慢  
2、springboot项目连接mq经常连接不上（偶尔可以连上）  
3、报错：AmqpTimeoutException: java.util.concurrent.TimeoutException  
4、java.net.SocketException: socket closed  
5、An unexpected connection driver error occured

上面问题，网上很多资料都是设置用户权限和允许远程远程访问的方法：

> 设置用户权限

rabbitmqctl  set_permissions -p /${user_name}  user_admin '.*' '.*' '.*'

> 允许远程访问，rabbitmq.config配置文件

[{rabbit, [{loopback_users, []}]}].

如果上诉方法不能解决的可以尝试下面的方法：

1、运行如下命令查看状态：

rabbitmqctl status

错误时会出现如下信息：

Status of node rabbit@manage01 ...
    Error: unable to perform an operation on node 'rabbit@manage01'. Please see diagnostics information and suggestions below.
    
    Most common reasons for this are:
    
     * Target node is unreachable (e.g. due to hostname resolution, TCP connection or firewall issues)
     * CLI tool fails to authenticate with the server (e.g. due to CLI tool's Erlang cookie not matching that of the server)
     * Target node is not running
    
    In addition to the diagnostics info below:
    
     * See the CLI, clustering and networking guides on http://rabbitmq.com/documentation.html to learn more
     * Consult server logs on node rabbit@manage01
     * If target node is configured to use long node names, don't forget to use --longnames with CLI tools
    
    DIAGNOSTICS
    ===========
    
    attempted to contact: [rabbit@manage01]
    
    rabbit@manage01:
      * connected to epmd (port 4369) on manage01
      * epmd reports node 'rabbit' uses port 25672 for inter-node and CLI tool traffic 
      * can't establish TCP connection to the target node, reason: timeout (timed out)
      * suggestion: check if host 'manage01' resolves, is reachable and ports 25672, 4369 are not blocked by firewall
    
    Current node details:
     * node name: 'rabbitmqcli-27020-rabbit@manage01'
     * effective user's home directory: /var/lib/rabbitmq
     * Erlang cookie hash: cuIV6fAR5pI2DAISuXW4IQ==

正确时会出现如下信息：

Status of node rabbit@manage01 ...
    [{pid,28714},
     {running_applications,
         [{rabbitmq_web_mqtt,"RabbitMQ MQTT-over-WebSockets adapter","3.7.12"},
          {rabbitmq_mqtt,"RabbitMQ MQTT Adapter","3.7.12"},
          {rabbitmq_management,"RabbitMQ Management Console","3.7.12"},
          {rabbitmq_management_agent,"RabbitMQ Management Agent","3.7.12"},
          {rabbitmq_web_stomp,"Rabbit WEB-STOMP - WebSockets to Stomp adapter",
              "3.7.12"},
          {rabbitmq_stomp,"RabbitMQ STOMP plugin","3.7.12"},
          {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.7.12"},
          {rabbit,"RabbitMQ","3.7.12"},
          {amqp_client,"RabbitMQ AMQP Client","3.7.12"},
          {rabbit_common,
              "Modules shared by rabbitmq-server and rabbitmq-erlang-client",
              "3.7.12"},
          {jsx,"a streaming, evented json parsing toolkit","2.9.0"},
          {xmerl,"XML parser","1.3.19"},
          {os_mon,"CPO  CXC 138 46","2.4.7"},
          {cowboy,"Small, fast, modern HTTP server.","2.6.1"},
          {ranch,"Socket acceptor pool for TCP protocols.","1.7.1"},
          {ssl,"Erlang/OTP SSL application","9.1.2"},
          {public_key,"Public key infrastructure","1.6.4"},
          {asn1,"The Erlang ASN1 compiler version 5.0.8","5.0.8"},
          {cowlib,"Support library for manipulating Web protocols.","2.7.0"},
          {crypto,"CRYPTO","4.4"},
          {inets,"INETS  CXC 138 49","7.0.5"},
          {sysmon_handler,"Rate-limiting system_monitor event handler","1.1.0"},
          {mnesia,"MNESIA  CXC 138 12","4.15.5"},
          {recon,"Diagnostic tools for production use","2.3.6"},
          {lager,"Erlang logging framework","3.6.5"},
          {goldrush,"Erlang event stream processor","0.1.9"},
          {compiler,"ERTS  CXC 138 10","7.3.1"},
          {syntax_tools,"Syntax tools","2.1.6"},
          {sasl,"SASL  CXC 138 11","3.3"},
          {stdlib,"ERTS  CXC 138 10","3.7.1"},
          {kernel,"ERTS  CXC 138 10","6.2"}]},
     {os,{unix,linux}},
     {erlang_version,
         "Erlang/OTP 21 [erts-10.2.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:128] [hipe]\n"},
     {memory,
         [{connection_readers,0},
          {connection_writers,0},
          {connection_channels,0},
          {connection_other,16596},
          {queue_procs,0},
          {queue_slave_procs,0},
          {plugins,972316},
          {other_proc,31715356},
          {metrics,206948},
          {mgmt_db,161864},
          {mnesia,74376},
          {other_ets,2853712},
          {binary,94816},
          {msg_index,28784},
          {code,23713613},
          {atom,1172689},
          {other_system,14120482},
          {allocated_unused,15029600},
          {reserved_unallocated,0},
          {strategy,rss},
          {total,[{erlang,75131552},{rss,78036992},{allocated,90161152}]}]},
     {alarms,[]},
     {listeners,
         [{clustering,25672,"::"},
          {amqp,5672,"::"},
          {stomp,61613,"::"},
          {'http/web-stomp',15674,"::"},
          {http,15672,"::"},
          {mqtt,1883,"::"},
          {'http/web-mqtt',15675,"::"}]},
     {vm_memory_calculation_strategy,rss},
     {vm_memory_high_watermark,0.4},
     {vm_memory_limit,13390166425},
     {disk_free_limit,50000000},
     {disk_free,22576242688},
     {file_descriptors,
         [{total_limit,32668},
          {total_used,2},
          {sockets_limit,29399},
          {sockets_used,0}]},
     {processes,[{limit,1048576},{used,463}]},
     {run_queue,1},
     {uptime,26},
     {kernel,{net_ticktime,60}}]

我们只需要关注第一句话：

Status of node rabbit@manage01 ...

可以知道rabbitmq中的host是manage01，然后运行如下命令添加host配置即可：

echo 127.0.0.1 manage01 >> /etc/host

> PS：127.0.0.1可以是你的IP具体地址，如果是局域网服务器，可以直接写内网地址。