Kafka: Deploy & Test

Saurabh Sharma

While I continue to learn more about architecture and design of kafka, a quickstart to deploy & test kafka is a must.

Step 1: Add Chart Repo

In my local system it is already present which was confirmed by the listing

root@master>helm repo list
NAME                    URL                                                                                         
stable                  https://charts.helm.sh/stable                                                               
elastic                 https://helm.elastic.co                                                                     
bitnami                 https://charts.bitnami.com/bitnami  

In your case you will have to add the repo.

helm repo add bitnami https://charts.bitnami.com/bitnami

Step 2: Deploy the chart

helm install my-release bitnami/kafka
Installation

The output identifies the steps you can use to validate the deployment, you can customize as per your needs for the quick test.

Step 3: Console Producer

Before you test you will need to have a client that can produce the events for a specific topic.

kubectl run my-release-kafka-client --restart='Never' --image docker.io/bitnami/kafka:3.1.0-debian-10-r14 --namespace default --command -- sleep infinity

You can check the running pod by issuing kubectl get pods

my-release-kafka-client                               1/1     Running   0             22m

Get into to the pod

 kubectl exec --tty -i my-release-kafka-client --namespace default -- bash
Producer

You can either use the same command as outputted by the Helm Install message for validation

kafka-console-producer.sh \
            --broker-list my-release-kafka-0.my-release-kafka-headless.default.svc.cluster.local:9092 \
            --topic test

Or customize as per your wish

> kafka-console-producer.sh --broker-list my-release-kafka-0.my-release-kafka-headless.default.svc.cluster.local:9092 --topic mytopic

Step 4: Console Consumer

The information you feed in the producer can be consumed by the client consumer. For that, log into the client

 kubectl exec --tty -i my-release-kafka-client --namespace default -- bash

And listen to the topic

kafka-console-consumer.sh \
            --bootstrap-server my-release-kafka.default.svc.cluster.local:9092 \
            --topic test \
            --from-beginning

Or for mytopic

kafka-console-consumer.sh --bootstrap-server my-release-kafka.default.svc.cluster.local:9092 --topic mytopic   
Consumer

Learn more about use cases here.

official documentation

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