Apache Kafka Component Guide
Also available as:
PDF

Running MirrorMaker on Kerberos-Enabled Clusters

To run MirrorMaker on a Kerberos/SASL-enabled cluster, configure producer and consumer properties as follows:

  1. Choose or add a new principal for MirrorMaker. Do not use kafka or any other service accounts. The following example uses principal mirrormaker.

  2. Create client-side Kerberos keytabs for your MirrorMaker principal. For example:

    sudo kadmin.local -q "ktadd -k /tmp/mirrormaker.keytab mirrormaker/HOSTNAME@EXAMPLE.COM"

  3. Add a new Jaas configuration file to the node where you plan to run MirrorMaker:

    -Djava.security.auth.login.config=/usr/hdp/current/kafka-broker/config/kafka_mirrormaker_jaas.conf

  4. Add the following settings to the KafkaClient section of the new Jaas configuration file. Make sure the principal has permissions on both the source cluster and the target cluster.

    KafkaClient {
         com.sun.security.auth.module.Krb5LoginModule required
         useKeyTab=true
         keyTab="/tmp/mirrormaker.keytab"
         storeKey=true
         useTicketCache=false
         serviceName="kafka"
         principal="mirrormaker/HOSTNAME@EXAMPLE.COM";
        };
  5. Run the following ACL command on the source and destination Kafka clusters:

    bin/kafka-acls.sh --topic test-topic --add --allow-principal user:mirrormaker --operation ALL --config /usr/hdp/current/kafka-broker/config/server.properties

  6. In your MirrorMaker consumer.config and producer.config files, specify security.protocol=SASL_PLAINTEXT.

  7. Start MirrorMaker. Specify the new.consumer option in addition to your other options. For example:

    /usr/hdp/current/kafka-broker/bin/kafka-run-class.sh kafka.tools.MirrorMaker --consumer.config consumer.properties --producer.config target-cluster-producer.properties --whitelist my-topic --new.consumer