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Add Kafka KRaft mode support with Conduktor #164

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Merged
merged 4 commits into from
Aug 13, 2025
Merged

Add Kafka KRaft mode support with Conduktor #164

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a611f25
Add Kafka KRaft mode support with Conduktor and JMX integration
simplesteph May 20, 2025
a34bca8
updated confluent cpvversion
simplesteph May 20, 2025
6f60434
updated Kafka version and README
simplesteph Aug 13, 2025
0f1319d
added a test
simplesteph Aug 13, 2025
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57 changes: 57 additions & 0 deletions conduktor-kafka-single.yml
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services:
postgresql:
image: postgres:14
hostname: postgresql
volumes:
- pg_data:/var/lib/postgresql/data
environment:
POSTGRES_DB: "conduktor-console"
POSTGRES_USER: "conduktor"
POSTGRES_PASSWORD: "some_password"
POSTGRES_HOST_AUTH_METHOD: "scram-sha-256"
conduktor-console:
image: conduktor/conduktor-console:1.34.0
ports:
- "8080:8080"
volumes:
- conduktor_data:/var/conduktor
environment:
CDK_DATABASE_URL: "postgresql://conduktor:some_password@postgresql:5432/conduktor-console"
CDK_CLUSTERS_0_ID: "default"
CDK_CLUSTERS_0_NAME: "My Local Kafka Cluster"
CDK_CLUSTERS_0_COLOR: "#0013E7"
CDK_CLUSTERS_0_BOOTSTRAPSERVERS: "PLAINTEXT://kafka1:19092"
# CONSOLE_JAVA_OPTS: "-XX:UseSVE=0"
CDK_CLUSTERS_0_JMXPORT: "9999"
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These 2 JMX props are not being used by Conduktor (either not exposed by the provider or in production).

This visual warning means no monitoring solution were found (which is not expected as creating a poor user experience as we show many graphs). As you can see in the official get-started, we add a "cortex" container (a prometheus basically, to hold the monitoring metrics and be able to query it) https://releases.conduktor.io/quick-start
Adding the container in this docker file would remove the warning.

CDK_CLUSTERS_0_JMXHOST: "kafka1"
kafka1:
image: confluentinc/cp-kafka:7.9.1
hostname: kafka1
container_name: kafka1
ports:
- "9092:9092"
- "29092:29092"
- "9999:9999" # JMX Port
- "9099:9099" # Internal inter-broker communication
environment:
environment:
CLUSTER_ID: MkU3OEVBNTcwNTJENDM2Qk
KAFKA_NODE_ID: 1
KAFKA_PROCESS_ROLES: broker,controller
KAFKA_CONTROLLER_QUORUM_VOTERS: "1@kafka1:9099"
KAFKA_LISTENERS: INTERNAL://0.0.0.0:19092,EXTERNAL://0.0.0.0:9092,DOCKER://0.0.0.0:29092,CONTROLLER://0.0.0.0:9099
KAFKA_ADVERTISED_LISTENERS: INTERNAL://kafka1:19092,EXTERNAL://${DOCKER_HOST_IP:-127.0.0.1}:9092,DOCKER://host.docker.internal:29092
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT,DOCKER:PLAINTEXT,CONTROLLER:PLAINTEXT
KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
KAFKA_INTER_BROKER_LISTENER_NAME: INTERNAL
KAFKA_LOG4J_LOGGERS: "kafka.controller=INFO,kafka.producer.async.DefaultEventHandler=INFO,state.change.logger=INFO"
KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
KAFKA_JMX_PORT: 9999
KAFKA_JMX_HOSTNAME: ${DOCKER_HOST_IP:-127.0.0.1}
KAFKA_AUTHORIZER_CLASS_NAME: org.apache.kafka.metadata.authorizer.StandardAuthorizer
KAFKA_ALLOW_EVERYONE_IF_NO_ACL_FOUND: "true"
volumes:
pg_data: {}
conduktor_data: {}