apurva1611 / app-prereq-helm-charts

setup the pre-requisites on the Kubernetes cluster before application is installed/setup.

#app-prereq-helm-charts setup the pre-requisites on the Kubernetes cluster before application is installed/setup. Steps:

1. Go to APP-PREREQ-HELM-CHARTS directory:
2. To create zookeeper chart run helm install zookeeper zookeeper Get a zookeeeper service name
3. to run kafka cluster: helm install kafka kafka (In values.yml in externalZookeeper in servers put zookeeeper service name and put it to run kakfa with the above created zookeeper.)

// Point to note this kakfa does not create topic. The charts just install kakfa and zookeeper on cluster.

#zookepernew-zookeeper.default.svc.cluster.local

export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/component=zookeeper" -o jsonpath="{.items[0].metadata.name}") kubectl exec -it $POD_NAME -- zkCli.sh

kubectl port-forward --namespace default svc/zookeeper 2181:2181 & zkCli.sh 127.0.0.1:2181

kubectl run kafka-client --restart='Never' --image docker.io/bitnami/kafka:2.6.0-debian-10-r57 --namespace default --command -- sleep infinity kubectl exec --tty -i kafka-client --namespace default -- bash

PRODUCER:
    kafka-console-producer.sh \
        
        --broker-list kafka-0.kafka-headless.default.svc.cluster.local:9092,kafka-1.kafka-headless.default.svc.cluster.local:9092,kafka-2.kafka-headless.default.svc.cluster.local:9092 \
        --topic test

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

helm install kafka kafka --set external.externalZookeeper.servers =zookeeper.default.svc.cluster.local

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