I get this error when i run sudo rabbitmqctl status on an on-prem server specifically on rhel8
Error: unable to perform an operation on node 'rabbit@xxxxx'. 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 https://rabbitmq.com/documentation.html to learn more
* Consult server logs on node rabbit@xxxxxx
* If target node is configured to use long node names, don't forget to use --longnames with CLI tools
DIAGNOSTICS
===========
attempted to contact: ['rabbit@xxxxx']
rabbit@xxxxx:
* connected to epmd (port 4369) on xxxxxxx
* 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 'xxxxxxxx' resolves, is reachable and ports 25672, 4369 are not blocked by firewall
Current node details:
* node name: 'rabbitmqcli-401-rabbit@xxxxx'
* effective user's home directory: /var/lib/rabbitmq
* Erlang cookie hash: gvMlNMNDWrRk2xONh+tqWQ==
Documentation: Table of Contents
— RabbitMQ
Erlang version = Erlang/OTP 25
Rabbitmq version = 3.12.12 latest
How can i fix this error?
I attempted to establish TCP connections to the ports 25672, 4369, 5671, and 15672 using the nc command, and the connections were successful.
Additionally, I pinged the hostname/IP address to verify if it is reachable.
Check the Erlang cookie on the RabbitMQ server
The default location of the cookie is: /var/lib/rabbitmq/.erlang.cookie
cat /var/lib/rabbitmq/.erlang.cookie
Copy the cookie to the user’s home directory
Use sudo to copy the cookie to the home directory of the user running rabbitmqctl, for example, the dam01 user:
sudo cp /var/lib/rabbitmq/.erlang.cookie /home/dam01/.erlang.cookie
Set the appropriate permissions for the cookie
Ensure that only the owner can read the file by setting the permission to 400
sudo chmod 400 /home/dam01/.erlang.cookie
Update the /etc/hosts file
Edit the /etc/hosts file to map 127.0.0.1 to your hostname:
sudo vi /etc/hosts
Add or modify the following line:
127.0.0.1 hostnamexxxxxx
Restart RabbitMQ server & Check status Stop, start & verify the RabbitMQ server:
sudo rabbitmq-server stop
sudo rabbitmq-server start
sudo rabbitmqctl status