# Kafka

Kafka is a self-hosted databases app. Apache Kafka is a distributed streaming platform designed to build real-time pipelines and can be used as a message broker or as a replacement for a log aggregation solution for big data applications. It is open source and self-hosted, installable on Kubernetes (Helm).

Canonical page: https://ourlocalhost.com/app/7304/kafka

## Description

Apache Kafka is a distributed streaming platform designed to build real-time pipelines and can be used as a message broker or as a replacement for a log aggregation solution for big data applications.

## Platform availability

Available on 1 of 9 platforms: Helm.

## Health score

80/100 (Excellent), based on 3 of 4 factors.
- Maintained: 100 (last commit 0 days ago)
- Popular: 91 (34,117 GitHub stars)
- Easy to install: 25 (1 install platform, install notes)

## Links

- Kubernetes (Helm): https://artifacthub.io/packages/helm/bitnami/kafka
- GitHub: https://github.com/apache/kafka
- Documentation: https://github.com/wurstmeister/kafka-docker
- Official website: https://kafka.apache.org/

## Common questions

### How should I configure Kafka listeners when running the Kafka Docker image so clients outside the container can connect?

Set KAFKA_ADVERTISED_LISTENERS to an address clients can actually use, while KAFKA_LISTENERS keeps the container-side ports such as 9092 and 9094. Publish the client-facing ports, usually 9092 for internal access and 9094 for external access, or clients may time out or refuse even though the container is running.

### Should I use wrapper scripts or CLI commands when applying Kafka production fixes?

Prefer documented CLI commands over wrapper scripts.

### How can I see more Kafka test logs during a local test run?

Change the log4j2.yaml file in the module's src/test/resources directory. By default, only a small number of logs are output while testing.

---
Source: Our Local Host (https://ourlocalhost.com/app/7304/kafka), the self-hosted and open-source app directory.