feat(devkit): add HOST listener for host-side client access#3280
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Add a HOST listener on port 29092 (container) mapped to NODE_ID*10000+9192 (host) so that host-side Kafka clients (Python, Java) can connect without /etc/hosts hacks. Previously advertised.listeners used container hostnames (node-0:9092) which are unresolvable from the host.
Gezi-lzq
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April 2, 2026 15:15
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Add a HOST listener on port 29092 (container) mapped to NODE_ID*10000+9192 (host) so that host-side Kafka clients (Python, Java) can connect without /etc/hosts hacks. Previously advertised.listeners used container hostnames (node-0:9092) which are unresolvable from the host.
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Gezi-lzq
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* feat(devkit): add HOST listener for host-side client access (#3280) Add a HOST listener on port 29092 (container) mapped to NODE_ID*10000+9192 (host) so that host-side Kafka clients (Python, Java) can connect without /etc/hosts hacks. Previously advertised.listeners used container hostnames (node-0:9092) which are unresolvable from the host. * refactor(devkit): simplify host port mappings and remove unused PLAINTEXT/CONTROLLER exports Remove unused PLAINTEXT and CONTROLLER host port mappings since they are unreachable from the host (advertised.listeners uses container hostnames). Reuse the X9092 port slots for HOST listener and change the container-side HOST port from 29092 to 9192 to avoid confusing collision with node-2.
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Summary
HOSTlistener (port 29092 in container) so host-side Kafka clients (Python, Java) can connect directlylocalhost:<NODE_ID*10000+9192>(9192, 19192, 29192, 39192, 49192)advertised.listenersused container hostnames (node-0:9092) which are unresolvable from the hostTest plan
just start-build 3— all nodes healthyKafkaProducerconnects vialocalhost:9192