Cannot get connection id for node

[tomyouyou]

The broker is working normally, but there are error logs as below, about twice a minute.

2024-03-30 00:39:07.106 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:39:59.074 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:40:07.281 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:40:59.301 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:41:07.533 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:41:59.511 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:42:07.761 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:42:59.742 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,
2024-03-30 00:43:08.026 [error] <0.159.0> , ** Cannot get connection id for node rabbit@zrabbit_192_168_32_82,

Here is some information about the host:

the version of erlang is erlang-25.3.2.6-1.el8.x86_64.
the version of rabbitmq-server is rabbitmq-server-3.12.10-1.

The cluster consists of one node named rabbit@zrabbit_192_168_32_82

There is an item of 192.168.32.82 zrabbit_192_168_32_82 in /etc/hosts

[root@controller-node182-9-8-62 vtu]# hostname
controller-node182-9-8-62

[root@controller-node182-9-8-62 vtu]# cat /etc/rabbitmq/rabbitmq-env.conf
ERL_EPMD_ADDRESS=192.168.32.82
RABBITMQ_NODENAME=rabbit@zrabbit_192_168_32_82

What is the reason for these error logs, and how can we avoid outputting these logs, such as modifying some configurations?

[lukebakken]

Here is where those log lines come from:

https://github.com/search?q=repo%3Aerlang%2Fotp+%22Cannot+get+connection+id+for+node%22&type=code

What is the output from these commands on this node? Please capture the output to a file and ATTACH the file to your response.

• ping zrabbit_192_168_32_82
• netstat -an
• ss -4n
• ss -4nl

Also, please ATTACH all of your RabbitMQ configuration files.

[tomyouyou]

there are rabbitmq.config, rabbitmq-env.conf and output of netstat inside 1.txt:
1.txt

the output of ss command:
ss.txt

[lukebakken]

• I don't see RabbitMQ listening on 192.168.32.82:5672 ... why not?
• How many interfaces / IP addresses does this node have?
• What is the output of epmd -names on this system?

[tomyouyou]

Because I have not enable any listeners, the item inside rabbitmq.config is "{tcp_listeners, []}"
In other tests, even if this listeners is enabled, the issue still exists.
The listeners is not enabled here, just to avoid affecting the clients

the output epmd and "ip addr" :
epmd-ipaddr.txt

thanks!

[tomyouyou]

It's not a problem.
Using incorrect test commands resulted in these error logs.