Install and Manage RabbitMQ on Ubuntu

echo 'deb http://www.rabbitmq.com/debian/ testing main' | sudo tee /etc/apt/sources.list.d/rabbitmq.list
wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install rabbitmq-server

Enabling the Management Console

sudo rabbitmq-plugins enable rabbitmq_management
http://[your droplet's IP]:15672/

The default username and password are both set “guest” for the log in.

RabbitMQ MQTT Adapter

sudo rabbitmq-plugins enable rabbitmq_mqtt

Managing on Ubuntu

# To start the service:
service rabbitmq-server start

# To stop the service:
service rabbitmq-server stop

# To restart the service:
service rabbitmq-server restart

# To check the status:
service rabbitmq-server status

add new user

rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"

delete guest

rabbitmqctl delete_user guest

References
https://www.rabbitmq.com/install-debian.html
https://www.digitalocean.com/community/tutorials/how-to-install-and-manage-rabbitmq
https://www.rabbitmq.com/plugins.html
https://www.rabbitmq.com/man/rabbitmqctl.1.man.html#add_user
https://stackoverflow.com/questions/22850546/cant-access-rabbitmq-web-management-interface-after-fresh-install