ZooKeeper role (and KRaft replacement) in Kafka - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a Kafka broker with ZooKeeper connection.

Kafka

bin/kafka-server-start.sh config/server.properties --override zookeeper.connect=[1]

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Alocalhost:9092

Blocalhost:2181

Clocalhost:9093

Dlocalhost:9094

Attempts:

3 left

💡 Hint

Common Mistakes

Using Kafka broker port instead of ZooKeeper port.

The Kafka broker connects to ZooKeeper at the default port 2181 on localhost.

2fill in blank

medium

Complete the configuration to enable KRaft mode in Kafka broker.

Kafka

process.roles=[1]

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Acontroller

Bbroker

Cbroker,controller

Dzookeeper

Attempts:

3 left

💡 Hint

Common Mistakes

Setting only 'broker' or 'controller' role alone.

In KRaft mode, the broker acts as both broker and controller, so both roles are set.

3fill in blank

hard

Fix the error in the KRaft controller quorum configuration.

Kafka

controller.quorum.voters=[1]

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A1@localhost:9093,2@localhost:9094,3@localhost:9095

Blocalhost:9093,localhost:9094,localhost:9095

Clocalhost:9093;localhost:9094;localhost:9095

D1:localhost:9093,2:localhost:9094,3:localhost:9095

Attempts:

3 left

💡 Hint

Common Mistakes

Using colons instead of '@', or missing voter ids.

The correct format for voters is 'id@host:port' separated by commas.

4fill in blank

hard

Fill both blanks to configure the KRaft metadata log directory and cluster id.

Kafka

metadata.log.dir=[1]
cluster.id=[2]

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A/var/lib/kafka/kraft-combined-logs

B/tmp/kafka-logs

C"A1B2C3D4-E5F6-7890-1234-56789ABCDEF0"

D"12345678-1234-1234-1234-123456789abc"

Attempts:

3 left

💡 Hint

Common Mistakes

Using default log directory or invalid cluster id format.

The metadata log directory is set to a dedicated KRaft logs folder, and the cluster id is a UUID string.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps broker ids to their ports in KRaft mode.

Kafka

broker_ports = [1]: [2] for [3] in range(1, 4)}

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Aid

Bid * 1000 + 9092

Dport

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names or incorrect port calculation.

This comprehension creates a dictionary where keys are broker ids and values are ports calculated by adding 9092 to 1000 times the id.