Create different port for each brokers AWS Loadbalancer

[bhushan558]

Hi,
We are running 3 brokers in a cluster, I am trying to assign different port to each broker in AWS Loadbalancer. Below is the code, it creates 3 Loadbalancer, but opens up only 9094 port for each LB. I would like to have LB1 as port: 9094, LB2: 9095, LB3:9096. How can I achieve this. Thank you!

`apiVersion: kafka.strimzi.io/v1beta1
kind: Kafka
metadata:
  name: cluster
  namespace: kafka-strimzi
spec:
  kafka:
    version: 2.6.0
    replicas: 3
    listeners:
      - name: external
        port: 9094
        type: loadbalancer
        tls: true
      - name: external
        port: 9095
        type: loadbalancer
        tls: true
      - name: external
        port: 9096
        type: loadbalancer
        tls: true
        authentication:
          type: scram-sha-512
    template:
      #...
      perPodService:
        metadata:
          annotations:
            service.beta.kubernetes.io/aws-load-balancer-connection-draining-enabled: "true"
            service.beta.kubernetes.io/aws-load-balancer-connection-draining-timeout: "60"
            service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0`

[scholzj]

I'm not sure how the YAML you shared relates to the question ... it seems like something what will be rejected by the operator. So I'm a bit confused by how it relates.

The load balancer listener is using the same port for all load balancers which belong to it. There is currently no way how to change it. to do what you want. What is the use case for it? I'm not sure I understand why would this matter. Maybe understanding the use-case would allow us to suggest some solution.

[bhushan558]

@scholzj We need 3 brokers in the cluster and they should listen on different port. Also, Is there any solution to run only one LoadBalancer instead of running 3 different LB for each broker E.g. Envoy? Thank you.

[scholzj]

We need 3 brokers in the cluster and they should listen on different port.

Well, that doesn't explain why you need it or the use-case for it. So as I said, this is not possible. You could probably setup a Nodeport listener in Strimz, manually setup the load balancers pointing to the nodeports and configure the advertised host / port override. That way you can achieve it, but it will be painful since you will need to manage it your self.

Also, Is there any solution to run only one LoadBalancer instead of running 3 different LB for each broker E.g. Envoy?

You can use Nginx Ingress with TLS Passthrough or you can use the workaround suggested above.