Docker Compose file for Schema Registry UI, Kafka Connect and Kafka Connect UI. Please notice that the host names are fake.

docker-compose.yml

version: '2.1'
# from https://github.com/simplesteph/kafka-stack-docker-compose/blob/master/full-stack.yml
services:

  schema-registry-ui:
    restart: always
    image: landoop/schema-registry-ui:0.9.4
    hostname: kafka-schema-registry-ui
    ports:
    - "8001:8000"
    environment:
      SCHEMAREGISTRY_URL: http://schema-registry.ec2.internal:8081/
      PROXY: "true"

  kafka-connect:
    restart: always
    image: confluentinc/cp-kafka-connect:5.0.0
    hostname: kafka-connect
    ports:
    - "8083:8083"
    environment:
      CONNECT_BOOTSTRAP_SERVERS: "kafka1.ec2.internal:9092,kafka2.ec2.internal:9092,kafka3.ec2.internal:9092"
      CONNECT_REST_PORT: 8083
      CONNECT_GROUP_ID: compose-connect-group
      CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs
      CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
      CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
      CONNECT_KEY_CONVERTER: io.confluent.connect.avro.AvroConverter
      CONNECT_KEY_CONVERTER_SCHEMA_REGISTRY_URL: 'http://schema-registry.ec2.internal:8081'
      CONNECT_VALUE_CONVERTER: io.confluent.connect.avro.AvroConverter
      CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: 'http://schema-registry.ec2.internal:8081'
      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: "kafka1.ec2.internal"
      CONNECT_LOG4J_ROOT_LOGLEVEL: "INFO"
      CONNECT_LOG4J_LOGGERS: "org.apache.kafka.connect.runtime.rest=WARN,org.reflections=ERROR"
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: "2"
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: "2"
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: "2"
      CONNECT_PLUGIN_PATH: "/usr/share/java"
      KAFKA_HEAP_OPTS: "-Xms512m -Xmx1g"

  kafka-connect-ui:
    restart: always
    image: landoop/kafka-connect-ui:0.9.4
    hostname: kafka-connect-ui
    ports:
    - "8003:8000"
    environment:
      CONNECT_URL: "http://connect.ec2.internal:8083/"
      PROXY: "true"