RabbitMQ

Total memory used, etc.

$ sudo rabbitmqctl status

Quantity of messages in queues

$ sudo rabbitmqctl list_queues

Install rabbitmqadmin

$ cd ~
$ wget http://localhost:15672/cli/rabbitmqadmin
$ chmod +x rabbitmqadmin

Purge queues with rabbitmqadmin

$ ./rabbitmqadmin purge queue name=cloudsearch_changes