...
| # | Issue | Notes | Decisions |
|---|---|---|---|
| 1 | kafka container port issue | The exposed port of kafka container changed from "19092" to "9092" in in docker-compose.yml | As per the technical discussion, there is no hard-coded port given in any java classes. |
| 2 | KAFKA_ADVERTISED_LISTENERS hostname resolution issue | The hostname changed from "kafka" to "localhost" in docker-compose.ymlport of KAFKA_ADVERTISED_LISTENERS has been changed to 29092. | As per the technical discussion, there is no hard-coded port given in any java classes. |
...
| # | Issue | Notes | Decisions |
|---|---|---|---|
| 1 | kafka container port issue | Open Questions: 1- Can we change the port to "9092"? | Since docker-compose.yml is being used for local env. setup and CSIT, it is possible to change to 9092. |
| 2 | KAFKA_ADVERTISED_LISTENERS hostname resolution issue | Open Questions: 1- Can we change the "kafka" to "localhost" in the listener? 2- Is it possible to update /etc/hosts in ONAP Jenkins? port to 29092? | As per local tests run by the team 2, and ONAP build, the required change has no negative effect. |
...
| Code Block | ||||
|---|---|---|---|---|
| ||||
kafka:
image: confluentinc/cp-kafka:6.2.1
container_name: kafka
ports:
- "19092:19092"
depends_on:
- zookeeper
environment:
KAFKA_BROKER_ID: 1
KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,CONNECTIONS_FROM_HOST://localhost:19092
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,CONNECTIONS_FROM_HOST:PLAINTEXT
KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 |
...
In order to solve this conflict, the current port has been changed to 9092 in docker-compose.yml
| Code Block | ||||
|---|---|---|---|---|
| ||||
kafka: image: confluentinc/cp-kafka:6.2.1 container_name: kafka ports: - '9092:9092' depends_on: - zookeeper environment: KAFKA_BROKER_ID: 1 KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,CONNECTIONS_FROM_HOST:PLAINTEXT KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,CONNECTIONS_FROM_HOST://localhost:9092 KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 |
2-The ConfluentKafkaLibrary also try to access the KAFKA_ADVERTISED_LISTENERS (PLAINTEXT://kafka:9092) natively.
However, it gets fail because of hostname to IP address resolution issue. There are two is a possible solution for this problem.
a- Add an entry into /etc/hosts like "127.0.0.1 kafka"b- Change the KAFKA_ADVERTISED_LISTENERS into port to 29092 into
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://
...
kafka:
...
29092,CONNECTIONS_FROM_HOST://localhost:
...
909