Install RabbitMQ with basic configuration

setup-rabbitmq.sh

#!/bin/bash

### Usage:
# RABBITMQ_DEFAULT_USER=someuser RABBITMQ_DEFAULT_PASS=secret123 RABBITMQ_DEFAULT_VHOST=myvhost setup-rabbitmq.sh

set -euo pipefail
apt-get update -y
apt-get install -y curl wget gnupg apt-transport-https

# Add Debian Wheezy backports repository to obtain init-system-helpers
gpg --keyserver pgpkeys.mit.edu --recv-key 7638D0442B90D010
gpg -a --export 7638D0442B90D010 | apt-key add -
echo 'deb http://ftp.debian.org/debian wheezy-backports main' | tee /etc/apt/sources.list.d/wheezy_backports.list

# Add Erlang Solutions repository to obtain esl-erlang
wget -O- https://packages.erlang-solutions.com/debian/erlang_solutions.asc | apt-key add -
echo 'deb https://packages.erlang-solutions.com/debian wheezy contrib' | tee /etc/apt/sources.list.d/esl.list

apt-get update
apt-get install -y init-system-helpers socat esl-erlang

# continue with RabbitMQ installation as explained above
wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | apt-key add -
echo 'deb http://www.rabbitmq.com/debian/ testing main' | tee /etc/apt/sources.list.d/rabbitmq.list
apt-get update
apt-get install -y rabbitmq-server

# Installation has concluded - now we can start and configure it:
service rabbitmq-server start
sleep 5
echo 'enabling...'
rabbitmq-plugins enable rabbitmq_management

echo 'list users?'

if rabbitmqctl list_users | grep $RABBITMQ_DEFAULT_USER; then
  echo "user '$RABBITMQ_DEFAULT_USER' already exists"
else
  echo 'adding user.....'
  rabbitmqctl add_user $RABBITMQ_DEFAULT_USER $RABBITMQ_DEFAULT_PASS || echo 'weird...'
fi

echo 'list users (2)'
if rabbitmqctl list_users | grep $RABBITMQ_DEFAULT_USER | grep -F "[administrator]"; then
  echo "user '$RABBITMQ_DEFAULT_USER' already tagged as 'administrator'"
else
  echo 'set user tags'
  rabbitmqctl set_user_tags $RABBITMQ_DEFAULT_USER administrator
fi

rabbitmqctl add_vhost $RABBITMQ_DEFAULT_VHOST || echo "vhost '$RABBITMQ_DEFAULT_VHOST' already exists"

echo 'list permissions?'
if rabbitmqctl list_permissions -p $RABBITMQ_DEFAULT_USER | grep $RABBITMQ_DEFAULT_USER | grep "$RABBITMQ_DEFAULT_VHOST\\.\\*\\s+\\.\\*\\s+\\.\\*\$/"; then
  echo "user '$RABBITMQ_DEFAULT_USER' already has permissions '.* .* .*'"
else
  echo 'setting permissions'
  rabbitmqctl set_permissions -p $RABBITMQ_DEFAULT_USER $RABBITMQ_DEFAULT_VHOST ".*" ".*" ".*"
fi

service rabbitmq-server stop
service rabbitmq-server start

The above updates have now been added to the original script.