Kafka updating properties doesn't work

[helli0n]

When I tried to enable external access on minikube I've got error in kafka console

INFO[0000] Running kafka-utils... INFO[0000] kubeconfig file: using InClusterConfig. INFO[0000] kubernetes client configured. INFO[0000] Running kafka-utils... INFO[0000] Checking the service created for kafka-kafka-0 INFO[0000] detected NodePort ERRO[0000] could not run the kafka utils bootstrap: no node found with name 'minikube'

I checked nodes in k8s. k8s has minikube node

kubectl get nodes --show-labels NAME STATUS ROLES AGE VERSION LABELS minikube Ready master 44h v1.19.2 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=minikube,kubernetes.io/os=linux,minikube.k8s.io/commit=1fd1f67f338cbab4b3e5a6e4c71c551f522ca138,minikube.k8s.io/name=minikube,minikube.k8s.io/updated_at=2020_09_30T16_32_03_0700,minikube.k8s.io/version=v1.13.1,node-role.kubernetes.io/master=

Tried to debug kafka-utils but didn't find documentations and etc.
Do you have guide how to use kafka-utils?

[zmalik]

@helli0n thanks for filing the issue, Kafka operator is maintained in https://github.com/mesosphere/kudo-kafka-operator.

kafka-utils try to detect external-ip, can you check if minikube node has any external-ip? if there is no external-ip, you cannot enable external access using nodeports.

The error message is misleading and should be fixed.

[helli0n]

Here is IP that minikube has.

$ minikube ip
192.168.99.101

[zmalik]

not this one
can you please check using kubectl get nodes -o wide ? you will see a column of EXTERNAL-IP

[helli0n]

Sure, here is. I see that EXTERNAL-IP:<none>

$ kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
minikube Ready master 46m v1.19.2 192.168.99.101 none Buildroot 2019.02.11 4.19.114 docker://19.3.12

I will try to find how to add it.

[helli0n]

Looks like minikube hasn't EXTERNAL-IP.
I think kafka-utils should be modified with adding additional check when operator was deployed on minikube.

If local deploy then use INTERNAL-IP.

https://github.com/mesosphere/kudo-kafka-operator/blob/master/images/kafka/kafka-utils/pkgs/service/service.go#L192-L203

[zmalik]

SGTM! can you create an issue in https://github.com/mesosphere/kudo-kafka-operator repository?

will take a look during the next week.
contributions are also welcome! 🙂

[helli0n]

d2iq-archive/kudo-kafka-operator#63 - created ticket into Kafka operator repo