We are also facing similar issue. Some points worth mentioning - We have too many producers (IOT) publishing to RabbitMQ leading to very high number of connections on RabbitMQ, might be possible that NiFi Consumer is unable to connect as there are already too many open connections We have multiple channels/topics on same RabbitMQ cluster, we face connectivity issue only for those channels/topics which have very high traffic/connections. ... View more