SSH, RabbitMQ, Protocol 'inet_tcp': register/listen error: econnrefused

Question

When I try to run on my server machine command

./rabbitmq-server

I the get following:

WARNING: Removing trailing slash from RABBITMQ_LOG_BASE
         Removing trailing slash from RABBITMQ_MNESIA_BASE
Protocol 'inet_tcp': register/listen error: econnrefused

Backstory: This is my first time I'm trying to install RabbitMQ-Server just using ssh.

Step-by-step what I did so far would be:

1. wget https://www.rabbitmq.com/releases/rabbitmq-server/v3.6.0/rabbitmq-server-3.6.15.zip
2. unzip rabbitmq-server-3.6.15.zip
3. nano Makefile # change prefix to rabbitMQ in home directory PREFIX ?= /home/user/rabbitmq
4. gmake
5. gmake install
6. cd ~/rabbitmq/lib/erlang/lib/rabbitmq_server-3.6.15/sbin/
7. export RABBITMQ_MNESIA_BASE=/home/user/rabbitmq/lib/erlang/lib/rabbitmq_server-3.6.15/sbin/ export RABBITMQ_LOG_BASE=/home/user/rabbitmq/
8. ./rabbitmq-server

And here comes the error. I was told that maybe "unlocking" ports would do the trick, but

• I don't know how to do that
• I don't know if that's the case

Answer 1

The error Protocol 'inet_tcp': register/listen error: econnrefused means that the Erlang node tried to connect to epmd (the Erlang port mapper daemon) to register its name, but failed to connect.

That shouldn't happen: epmd should be started when the Erlang node starts up. You could try running epmd manually in the shell, and see if it reports any errors.

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If it says failed to bind socket: Operation not permitted, check if something else is using port 4369 (which is the port that epmd tries to listen on).