Guidelines for changing hostname of RabbitMQ node

[arshad01]

Community Support Policy

• I have read RabbitMQ's Community Support Policy

RabbitMQ version used

3.13.7

Erlang version used

26.2.x

Operating system (distribution) used

Rocky8

How is RabbitMQ deployed?

RPM package

rabbitmq-diagnostics status output

See https://www.rabbitmq.com/docs/cli to learn how to use rabbitmq-diagnostics

Logs from node 1 (with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

Logs from node 2 (if applicable, with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

Logs from node 3 (if applicable, with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

rabbitmq.conf

listeners.tcp.1 = 127.0.0.1:5672
stomp.listeners.tcp.1 = 127.0.0.1:61613
web_stomp.tcp.listener = 127.0.0.1:15674
stomp.proxy_protocol = true
classic_queue.default_version = 2
deprecated_features.permit.management_metrics_collection = false

Steps to deploy RabbitMQ cluster

Single node deployment with classic queues.

Steps to reproduce the behavior in question

N/A

What are the guidelines for changing hostname of a RabbitMQ node (no cluster) so that all exchanges/queues and data in mnesia is migrated from old to new node name.

Thanks

advanced.config

See https://www.rabbitmq.com/docs/configure#config-location to find advanced.config file location

Application code

# relevant messaging-related parts of your code go here

Kubernetes deployment file

# Relevant parts of K8S deployment that demonstrate how RabbitMQ is deployed

[michaelklishin]

This sounds like the same question as #12289.

You have several options:

• Override node's data directory location. This won't update queue identities in the database but you can re-declare the queues, and if all queues in the system are transient, you won't have anything to update
• Export and import definitions and import them into newly started blank node. This won't migrate the messages but can be good enough
• Finally, the most complex migration option which migrates everything is Blue-Green deployment (it assumes that the original node can be started)

There used to be a command that updated the hostname part of internal queue identities but it was removed because it is not compatible with quorum queues and streams.

[arshad01]

Thanks @michaelklishin for the reply.