📦 Installation Command
Download from Apache Kafka website and extract (not in repos)
Apache Kafka Port & Configuration
kafka systemctl: kafka (custom service file)Distributed event streaming platform. High-throughput, fault-tolerant message queue.
🔌 Default Ports
9092
tcp
Kafka broker
9093
tcp
Kafka SSL
2181
tcp
Zookeeper (legacy)
9094
tcp
KRaft controller
⚙️ Configuration Files
/opt/kafka/config/server.properties/opt/kafka/config/kraft/server.properties (KRaft mode)/opt/kafka/config/consumer.properties/opt/kafka/config/producer.properties
📂 Default Directories
- config:
/opt/kafka/config - data:
/var/lib/kafka - logs:
/var/log/kafka - kafka_home:
/opt/kafka
🔐 Default Credentials
Username:N/A (no auth by default)
Password:N/A
💡 No authentication by default! Configure SASL/SSL for auth. Use ACLs for authorization.
📌 Dependencies
⚠️ Conflicts
✅ Works With
🛡️ Security Notes
Enable SASL authentication, use SSL/TLS, configure ACLs, use KRaft mode (no ZooKeeper) for new deployments
❓ Frequently Asked Questions
What port does Kafka use?
Kafka uses port 9092 for client connections. ZooKeeper uses 2181.
Does Kafka need ZooKeeper?
Traditional Kafka needs ZooKeeper. KRaft mode (new) removes this dependency.
Where is Kafka config?
Config at server.properties in Kafka installation directory.