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RabbitMQ & Nodedown Errors

If you are experiencing issues when starting RabbitMQ server or using RabbitMQ Control Script - rabbitmqctl and the error is:

Error: unable to connect to node 'rabbit@mydomain': nodedown

Then open up /etc/host file and add the following line:

127.0.0.1    mydomain

Also if you have started RabbitMQ as a service (being root) and you either see the nodedown error or the following error:

"Error when reading /some_path/.erlang.cookie: eacces"

then copy the default erlang cookie from /var/lib/rabbitmq:

cp -f /var/lib/rabbitmq/.erlang.cookie /some_path/.erlang.cookie