1 step: Installing RabbitMQ Cluster Operator in a Kubernetes Cluster: https://www.rabbitmq.com/kubernetes/operator/install-operator.html
2 Step: download the repository files
3 step: install the rabbitmq instance: kubectl create -f rabbitmq.yaml
4 step: creates the service that exposes the management interface. I use Metallb as a LoadBalancer: kubectl create -f rabbitmq_svc_management.yaml
5 step: creates the service that exposes the port for the mqtt protocol. I use Metallb as a LoadBalancer: kubectl create -f rabbitmq_svc_mqtt.yaml
6 step: create your user account: kubectl exec NAME_OF_YOU_POD -it -- rabbitmqctl add_user myUser myPass
7 step: To make user an administrator run: kubectl exec NAME_OF_YOU_POD -it -- rabbitmqctl set_user_tags myUser administrator
8 step: Make it Admin on everything: kubectl exec NAME_OF_YOU_POD -it -- rabbitmqctl set_permissions -p / myUser "." "." ".*"