Install rabbitmq on Ubuntu Core / Server. Support for Armbian, tested on Nanopi neo

install_rabbitmq.sh

#/bin/bash

apt-get install -y wget curl

wget -O- https://packages.erlang-solutions.com/debian/erlang_solutions.asc | apt-key add -
echo "deb http://binaries.erlang-solutions.com/debian stretch contrib" | tee /etc/apt/sources.list.d/erlang-solutions.list

wget -O- https://dl.bintray.com/rabbitmq/Keys/rabbitmq-release-signing-key.asc | apt-key add -
echo "deb https://dl.bintray.com/rabbitmq/debian stretch main" | tee /etc/apt/sources.list.d/bintray.rabbitmq.list

# Work a round missing libssl1.1
wget -O /tmp/libssl1.1.deb http://ftp.jp.debian.org/debian/pool/main/o/openssl/libssl1.1_1.1.0f-3+deb9u1_armhf.deb
dpkg -i /tmp/libssl1.1.deb 
rm -f /tmp/libssl1.1.deb 

apt-get update
apt-get install -y rabbitmq-server

rabbitmqctl add_user ptstudio xxxxxxxxxxxxxxxxxxxxxxxxxxxx
rabbitmqctl set_user_tags ptstudio administrator
rabbitmqctl set_permissions -p / ptstudio ".*" ".*" ".*"

rabbitmq-plugins enable --offline rabbitmq_management \
    && rabbitmq-plugins enable --offline rabbitmq_mqtt

Install MQTT broker & enable web UI