RabbitMQ Cluster rename snipper (https://www.rabbitmq.com/rabbitmqctl.8.html#rename_cluster_node)

rabbitmq_rename_cluster.sh

rename_node() {
  RABBITMQ_NODENAME=$1 rabbitmqctl rename_cluster_node $1 $2 && (
    mv /var/lib/rabbitmq/mnesia/$1 /var/lib/rabbitmq/mnesia/$2
    mv /var/lib/rabbitmq/mnesia/$1-plugins-expand /var/lib/rabbitmq/mnesia/$2-plugins-expand
    mv /var/lib/rabbitmq/mnesia/$1-rename /var/lib/rabbitmq/mnesia/$2-rename
    mv /var/lib/rabbitmq/mnesia/$1.pid /var/lib/rabbitmq/mnesia/$2.pid
  )
}
rename_node old@node new@localhost