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Chapter 7. L
7.1. Listener
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Defines how clients connect to the Kafka cluster. Streams for Apache Kafka supports several listener types for exposing Kafka internally or externally.
Listener types:
- internal
- Kafka exposed only within the OpenShift cluster
- route
- Kafka exposed externally using OpenShift Routes
- loadbalancer
-
Kafka exposed externally using a
LoadBalancerservice - nodeport
-
Kafka exposed externally using
NodePortservices - ingress
- Kafka exposed externally using OpenShift NGINX Ingress with TLS passthrough
- cluster-ip
-
Kafka exposed using a per-broker
ClusterIPservice
7.2. Logging (configuration)
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Logging for Kafka components and Streams for Apache Kafka operators is configured through their custom resources. The configuration uses Log4j2 and supports dynamic updates without restarting pods.
Configuration methods:
- inline
- Loggers and levels are defined directly in the custom resource. Used for simple changes to log levels.
- external
-
Loggers and levels are defined in a
ConfigMapreferenced by the custom resource. Used for complex, reusable, or filtered configurations.
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