Error: unable to perform an operation on node 'rabbit@rabbitmq2'.

[johnykov]

Hi, I've cloned and docker-compose up and got this error logs

rabbitmq2_1 | RABBITMQ_ERLANG_COOKIE env variable support is deprecated and will be REMOVED in a future version. Use the $HOME/.erlang.cookie file or the --erlang-cookie switch instead.
rabbitmq2_1 | Stopping rabbit application on node rabbit@rabbitmq2 ...
rabbitmq2_1 | Error: unable to perform an operation on node 'rabbit@rabbitmq2'. Please see diagnostics information and suggestions below.
rabbitmq2_1 |
rabbitmq2_1 | Most common reasons for this are:
rabbitmq2_1 |
rabbitmq2_1 | * Target node is unreachable (e.g. due to hostname resolution, TCP connection or firewall issues)
rabbitmq2_1 | * CLI tool fails to authenticate with the server (e.g. due to CLI tool's Erlang cookie not matching that of the server)
rabbitmq2_1 | * Target node is not running
rabbitmq2_1 |
rabbitmq2_1 | In addition to the diagnostics info below:
rabbitmq2_1 |
rabbitmq2_1 | * See the CLI, clustering and networking guides on https://rabbitmq.com/documentation.html to learn more
rabbitmq2_1 | * Consult server logs on node rabbit@rabbitmq2
rabbitmq2_1 | * If target node is configured to use long node names, don't forget to use --longnames with CLI tools
rabbitmq2_1 |
rabbitmq2_1 | DIAGNOSTICS
rabbitmq2_1 | ===========
rabbitmq2_1 |
rabbitmq2_1 | attempted to contact: [rabbit@rabbitmq2]
rabbitmq2_1 |
rabbitmq2_1 | rabbit@rabbitmq2:
rabbitmq2_1 | * connected to epmd (port 4369) on rabbitmq2
rabbitmq2_1 | * epmd reports: node 'rabbit' not running at all
rabbitmq2_1 | no other nodes on rabbitmq2
rabbitmq2_1 | * suggestion: start the node
rabbitmq2_1 |
rabbitmq2_1 | Current node details:
rabbitmq2_1 | * node name: 'rabbitmqcli-45-rabbit@rabbitmq2'
rabbitmq2_1 | * effective user's home directory: /var/lib/rabbitmq
rabbitmq2_1 | * Erlang cookie hash: gnzLDuqKcGxMNKFokfhOew==
rabbitmq2_1 |
rabbitmq3_1 | RABBITMQ_ERLANG_COOKIE env variable support is deprecated and will be REMOVED in a future version. Use the $HOME/.erlang.cookie file or the --erlang-cookie switch instead.
rabbitmq3_1 | Stopping rabbit application on node rabbit@rabbitmq3 ...

and idea why is that?

[qfshen]

why is that?

[habibridho]

I got the same issue and it looks to be a problem with the erlang cookie. As the log suggest, setting erlang cookie from environment variable is deprecated, so I tried to set it using file in all the node.

  volumes:
      - ./local_dir/erlang_cookie.txt:/var/lib/rabbitmq/mnesia/.erlang.cookie

Edit: The above approach only makes the first node works, the other two nodes still have epmd problem.

[itimofeev]

It helps for me to add sleep after /usr/local/bin/docker-entrypoint.sh rabbitmq-server -detached command:

...
/usr/local/bin/docker-entrypoint.sh rabbitmq-server -detached

sleep 10s
# Do the cluster dance
rabbitmqctl stop_app
rabbitmqctl join_cluster rabbit@rabbitmq1
...

Now it works.