Maros Orsak created KAFKA-21277:
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Summary: Docker image: support KRaft dynamic quorum (KIP-853)
controllers
Key: KAFKA-21277
URL: https://issues.apache.org/jira/browse/KAFKA-21277
Project: Kafka
Issue Type: Improvement
Reporter: Maros Orsak
Assignee: Maros Orsak
The Docker image can only run controllers with static voters. With
controller.quorum.bootstrap.servers instead:
# KafkaDockerWrapper always formats with plain kafka-storage format. On a
controller without voters, StorageTool requires --standalone or
--no-initial-controllers, so the format fails and the container exits.
# The image configure script rejects KAFKA_ADVERTISED_LISTENERS on
controller-only nodes, but a dynamic voter needs an advertised controller
endpoint.
We should (i.) add a new env var (e.g. STORAGE_FORMAT_ARGS) appended to the
images format command and (ii.) allow KAFKA_ADVERTISED_LISTENERS on controllers
when it lists only controller listeners.
Default behaviour stays unchanged. Since the env vars are part of the images,
interface (KIP-975), this might require a small KIP.
Affects the 3.9.x+ version.
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