How to enable SSL in kafka and zookeeper?

Question

I need to enable SSL security in apache kafka and zookeeper? Is there any tutorial? I am facing issues with the truststore path.

Answer 1

you can go through below links to set SSL:

https://docs.confluent.io/platform/current/security/security_tutorial.html#generating-keys-certs

https://docs.confluent.io/3.0.0/kafka/ssl.html

This is the docker image I am currently using:

version: '3'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:latest
    container_name: zookeeper
    hostname: zookeeper
    ports:
      - 2181:2181
    environment:
      ZOOKEEPER_SERVER_ID: 1
      ZOOKEEPER_CLIENT_PORT: 2181

  broker:
    image: confluentinc/cp-kafka:latest
    container_name: broker
    hostname: broker
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,SSL:SSL
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:9092,SSL://broker:9093
      KAFKA_SSL_KEYSTORE_FILENAME: kafka.server.keystore.jks
      KAFKA_SSL_KEYSTORE_CREDENTIALS: kafka.key
      KAFKA_SSL_KEY_CREDENTIALS: kafka.key
      KAFKA_SSL_TRUSTSTORE_FILENAME: kafka.server.truststore.jks
      KAFKA_SSL_TRUSTSTORE_CREDENTIALS: kafka.key
      KAFKA_MIN_INSYNC_REPLICAS: 1
      KAFKA_NUM_PARTITIONS: 1
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 500
      KAFKA_DEFAULT_REPLICATION_FACTOR: 1
      KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_CONFLUENT_BALANCER_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      CONFLUENT_METRICS_ENABLE: 'false'
    volumes:
      - ./se:/etc/kafka/secrets