kafka-clusters-only.yaml

---
version: "2"
services:
  kafka0:
    image: confluentinc/cp-kafka:7.2.1
    hostname: kafka0
    container_name: kafka0
    ports:
      - "9092:9092"
      - "9997:9997"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: "CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT"
      KAFKA_ADVERTISED_LISTENERS: "PLAINTEXT://kafka0:29092,PLAINTEXT_HOST://localhost:9092"
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_JMX_PORT: 9997
      KAFKA_JMX_HOSTNAME: localhost
      KAFKA_PROCESS_ROLES: "broker,controller"
      KAFKA_NODE_ID: 1
      KAFKA_CONTROLLER_QUORUM_VOTERS: "1@kafka0:29093"
      KAFKA_LISTENERS: "PLAINTEXT://kafka0:29092,CONTROLLER://kafka0:29093,PLAINTEXT_HOST://0.0.0.0:9092"
      KAFKA_INTER_BROKER_LISTENER_NAME: "PLAINTEXT"
      KAFKA_CONTROLLER_LISTENER_NAMES: "CONTROLLER"
      KAFKA_LOG_DIRS: "/tmp/kraft-combined-logs"
    volumes:
      - ./scripts/update_run_cluster.sh:/tmp/update_run.sh
      - ./scripts/clusterID:/tmp/clusterID
    command: 'bash -c ''if [ ! -f /tmp/update_run.sh ]; then echo "ERROR: Did you forget the update_run.sh file that came with this docker-compose.yml file?" && exit 1 ; else /tmp/update_run.sh && /etc/confluent/docker/run ; fi'''

  schemaregistry0:
    image: confluentinc/cp-schema-registry:7.2.1
    depends_on:
      - kafka0
    environment:
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka0:29092
      SCHEMA_REGISTRY_KAFKASTORE_SECURITY_PROTOCOL: PLAINTEXT
      SCHEMA_REGISTRY_HOST_NAME: schemaregistry0
      SCHEMA_REGISTRY_LISTENERS: http://schemaregistry0:8085

      SCHEMA_REGISTRY_SCHEMA_REGISTRY_INTER_INSTANCE_PROTOCOL: "http"
      SCHEMA_REGISTRY_LOG4J_ROOT_LOGLEVEL: INFO
      SCHEMA_REGISTRY_KAFKASTORE_TOPIC: _schemas
    ports:
      - 8085:8085

  kafka-connect0:
    image: confluentinc/cp-kafka-connect:7.2.1
    ports:
      - 8083:8083
    depends_on:
      - kafka0
      - schemaregistry0
    environment:
      CONNECT_BOOTSTRAP_SERVERS: kafka0:29092
      CONNECT_GROUP_ID: compose-connect-group
      CONNECT_CONFIG_STORAGE_TOPIC: _connect_configs
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_OFFSET_STORAGE_TOPIC: _connect_offset
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_STATUS_STORAGE_TOPIC: _connect_status
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_KEY_CONVERTER: org.apache.kafka.connect.storage.StringConverter
      CONNECT_KEY_CONVERTER_SCHEMA_REGISTRY_URL: http://schemaregistry0:8085
      CONNECT_VALUE_CONVERTER: org.apache.kafka.connect.storage.StringConverter
      CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: http://schemaregistry0:8085
      CONNECT_INTERNAL_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_INTERNAL_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_REST_ADVERTISED_HOST_NAME: kafka-connect0
      CONNECT_PLUGIN_PATH: "/usr/share/java,/usr/share/confluent-hub-components"

  kafka-init-topics:
    image: confluentinc/cp-kafka:7.2.1
    volumes:
      - ./message.json:/data/message.json
    depends_on:
      - kafka0
    command: "bash -c 'echo Waiting for Kafka to be ready... && \
      cub kafka-ready -b kafka0:29092 1 30 && \
      kafka-topics --create --topic users --partitions 3 --replication-factor 1 --if-not-exists --bootstrap-server kafka0:29092 && \
      kafka-topics --create --topic messages --partitions 2 --replication-factor 1 --if-not-exists --bootstrap-server kafka0:29092 && \
      kafka-console-producer --bootstrap-server kafka0:29092 --topic users < /data/message.json'"