default settings for RabbitMQ AMQP server

rabbitmq-env.conf contains variable settings that override the defaults built in to the RabbitMQ startup scripts.
The file is interpreted by the system shell, and so should consist of a sequence of shell environment variable definitions. Normal shell syntax is permitted (since the file is sourced using the shell "." operator), including line comments starting with "#".
In order of preference, the startup scripts get their values from the environment, from rabbitmq-env.conf and finally from the built-in default values. For example, for the RABBITMQ_NODENAME setting, RABBITMQ_NODENAME from the environment is checked first. If it is absent or equal to the empty string, then NODENAME from rabbitmq-env.conf is checked. If it is also absent or set equal to the empty string then the default value from the startup script is used.
The variable names in rabbitmq-env.conf are always equal to the environment variable names, with the “RABBITMQ_” prefix removed: RABBITMQ_NODE_PORT from the environment becomes NODE_PORT in rabbitmq-env.conf, etc.

Here is an example of a complete rabbitmq-env.conf file that overrides the default Erlang node name from "rabbit" to "hare".
# I am a complete rabbitmq-env.conf file.
# Comment lines start with a hash character.
# This is a /bin/sh script file - use ordinary envt var syntax

rabbitmq-echopid(8), rabbitmq-plugins(8), rabbitmq-server(8), rabbitmq-service(8), rabbitmqctl(8)

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