RabbitMQ Cluster Node Missing

While starting the RabbitMQ cluster start one node first and wait for it to be up and running (Use the “ae status” command to check if RabbitMQ is started). Once one node is started you can start all other nodes at the same time.

This is to avoid race conditions among RabbitMQ nodes. Please check the following link for more details.

https://www.rabbitmq.com/cluster-formation.html#initial-formation-race-condition

If you have already started the nodes. Then stop all the running nodes except one and on the server where RabbitMQ is stopped delete “nodes_running_at_shutdown” file at location “<<RPA Image>>\ data\Messaging\db\<<CLUSTER_NAME>>@<<MACHINE NAME>>-mnesia” and then restart RabbitMQ.