Federation not working for quorum

[pay-11-m]

Hi Team,

I have deployed 3 node RMQ cluster and operator on Azure kubernetes cluster.

Versions:
RMQ: 3.13.2-management
RMQ cluster operator: rabbitmqoperator/cluster-operator:2.9.0
controller-gen.kubebuilder.io/version: v0.14.0
RMQ messaging topology operator: rabbitmqoperator/messaging-topology-operator:1.14.2
controller-gen.kubebuilder.io/version: v0.15.0
mtls is on in downstream, and certificates are given in upstream.

Since classic has been deprecated, we have upgraded to quorum. The federation used before was as below:
apiVersion: rabbitmq.com/v1beta1
kind: Federation
metadata:
name: federation-example
spec:
name: "origin"
vhost: "downstream"
uriSecret:
name: federation-uri
ackMode: "on-confirm"
rabbitmqClusterReference:
name: example-rabbit

But it was showing error. The federation link created in Upstream queue refers to classic, whereas all the queues are in quorum.
Also the vhost in both Upstream and downstream have defaultQueueType is quorum.

Could you please support?

But when I added it through dashboard, and applied queuetype as quorum, it is working fine.
But, how can I add queuetype in yaml file. I added as below but even if it didn't show any error while applying, it is not taking that configuration.
apiVersion: rabbitmq.com/v1beta1
kind: Federation
metadata:
name: federation-example
spec:
name: "origin"
vhost: "downstream"
queue: quorum

I would really appreciate if you could support at earliest.

[Zerpet]

It would be great if you could provide formatted YAML, that we can just apply and reproduce this issue. Read this on how to format code blocks, and this one on basic formatting. It would be helpful if you could provide the error you are observing.

[pay-11-m]

Hi @Zerpet .

Please find below details for recreating the issue:

Earlier versions we used in both RabbitMQ before upgrade were as below ->

RABBITMQ Image : 3.11.18-management
CRDS:

1. RABBITMQ-CLUSTER-OPERATOR
   controller-gen.kubebuilder.io/version: v.13.0
   rabbitmqoperator/messaging-topology-operator:1.13.0
2. MESSAGING-TOPOLOGY-OPERATOR
   controller-gen.kubebuilder.io/version: v.14.0
   rabbitmqoperator/cluster-operator:2.7.0

Versions we used in both RabbitMQ after upgrade are as below ->

RABBITMQ Image : 3.13.2-management
CRDS:

1. RABBITMQ-CLUSTER-OPERATOR
   controller-gen.kubebuilder.io/version: v.14.0
   rabbitmqoperator/messaging-topology-operator:1.14.2
2. MESSAGING-TOPOLOGY-OPERATOR
   controller-gen.kubebuilder.io/version: v.15.0
   rabbitmqoperator/cluster-operator:2.9.0

---

We have enabled mtls in one of the rabbitmq.

Scenario:

1. Before upgrade Federation and Shovel was working fine with both amqp and amqps in URI.
   URI federation: amqps://:@/
   URI shovel: destination -> amqps://:@/
   source -> amqp://@/
   Both were working
2. After upgrade, both shovel and federation were stuck in error/starting.
   So, we changed amqps to amqp in URI and at least Shovel started working.
   URI shovel: destination -> amqp://:@/
   source -> amqp://@/

But, even after changing amqps to amqp in federation URI, it still stucked in starting state. Format for federation in yaml is same as given in above question.
3. Since we couldn't create it again using yaml, we tried to create it from dashboard and still faced the error.
But, when we applied queue type = quorum from available option, we were able to get the federation in working.

Issue is, I am unabke to get the federated queue type as quorum in upstream RMQ.
As shown in attached screenshot, federated queue type is quorum for the one created by dashboard with parameter queue type = quorum.

I will really appreciate if you could you let me know how to add parameter queue type in kind: federation?
https://www.rabbitmq.com/docs/federation-reference

Thank you so much for the support.

[Zerpet]

I'm afraid it is not possible to define the queue type in Federation YAML spec. We need a new feature for that. AMQPs and mTLS may not work correctly in RabbitMQ image 3.13.x because it has Erlang 26, which is more strict about TLS configuration. I can try to reproduce this problem locally.