Kafka Source Controller Error: Running Out of Available Brokers - Troubleshooting Across Kubernetes Clusters

[B3ns44d]

Hi all,

I have two Kubernetes clusters, dev and sandbox, both with Knative installed. On dev, we used the normal Knative installation method, while on sandbox we used the Knative operator. We use Kafka for our eventing, and we have set up a Kafka source that is working fine on the dev cluster. However, when we tried to set up the same Kafka source on the sandbox cluster, we received the following error message from the Kafka source controller:

Warning InternalError 4m31s (x22 over 18m) kafkasource-controller topics [events] not present or invalid: error getting sarama config: kafka: client has run out of available brokers to talk to (Is your cluster reachable?)

It's important to note that we are using the same Kafka cluster for both clusters and that the Kafka cluster is working fine. We also copied the same secret that the Kafka source in the dev cluster uses to connect the Kafka cluster to the sandbox cluster, but we are still receiving this error. We are not sure what the issue could be.

We have used Kafka tools to check if the Kafka broker(s) are accessible from the sandbox cluster, and they are accessible.

Do you have any ideas on how we can resolve this issue? Any suggestions or insights would be greatly appreciated.

Thank you!