kafka-listeners | Whatever Client Won ’ t Connect to My Apache Kafka Cluster | Pub Sub library

by rmoff Go Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(8)Vulnerabilities Install Support

kandi X-RAY | kafka-listeners Summary

kafka-listeners is a Go library typically used in Messaging, Pub Sub, Docker, Kafka applications. kafka-listeners has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

See My Python/Java/Spring/Go/Whatever Client Won’t Connect to My Apache Kafka Cluster in Docker/AWS/My Brother’s Laptop. Please Help!. Also: Kafka Listeners – Explained.

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Support

kafka-listeners has a low active ecosystem.

It has 60 star(s) with 24 fork(s). There are no watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of kafka-listeners is current.

Quality

kafka-listeners has 0 bugs and 8 code smells.

Security

kafka-listeners has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

kafka-listeners code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

kafka-listeners does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

kafka-listeners releases are not available. You will need to build from source code and install.

It has 361 lines of code, 9 functions and 5 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed kafka-listeners and discovered the below as its top functions. This is intended to give you an instant insight into kafka-listeners implemented functionality, and help decide if they suit your requirements.

doProduce creates a new message and returns the message .
doConsume is used to create a new consumer
doAdmin executes the admin client
This is the main function .
Converts arguments into a Broker instance .
String returns a string representation of the broker

Get all kandi verified functions for this library.

kafka-listeners Key Features

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kafka-listeners Examples and Code Snippets

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Community Discussions

Trending Discussions on kafka-listeners

Running Kafka Confluent Platform on WSL 2 (Ubuntu Distribution) and Spring application on Windows (Broker may not be available)

Kafka Consumer is not receiving Messages on docker

Kafka Listeners - how many?

Unable for .NET client to send messages to Kafka on Docker

Cannot connect to kafka from ourside of its docker container

Connection to Kafka broker in Docker container fails

console-producer Error connecting to node kafka1:9092 (org.apache.kafka.clients.NetworkClient) java.net.UnknownHostException

Kafka Listener is not working! It is isolated in intranet

QUESTION

Running Kafka Confluent Platform on WSL 2 (Ubuntu Distribution) and Spring application on Windows (Broker may not be available)

Asked 2022-Mar-23 at 22:27

I'm running Confluent Platform in wsl 2(Ubuntu Distribution) and I also running a Spring application on Windows but when I send a message with a producer I have this error:

Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available. Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected

I have a look this articles: https://www.confluent.io/blog/kafka-client-cannot-connect-to-broker-on-aws-on-docker-etc/ and https://forum.confluent.io/t/running-kafka-connect-sink-on-separate-machine-from-zookeeper-topic-non-localhost/3038 and https://www.confluent.io/blog/kafka-listeners-explained/

But I don't find the solution.

What is the configuration in concluent/etc/kafka/server.properties file?

I've set this:

advertised.listeners=PLAINTEXT://127.0.0.1:9092
listener.security.protocol.map=PLAINTEXT:PLAINTEXT
listeners=PLAINTEXT://0.0.0.0:9092

Kafka is running on: "localhost:9092" and within WSL2 I can send and read messages correctly but it doesn't work my spring boot application on Windows.

I see this answer, but It doesn't work in my localhost: running Kafka on WSL and make producer on windows

Do I have to change something in my Windows configuration? In C:\Windows\System32\drivers\etc\hosts?

Could you please advice how to solve this error? Thanks in advance!

...

ANSWER

Answered 2022-Mar-23 at 22:26

You need to use ifconfig (or ip addr) inside WSL2 terminal, find its external interface IP, then use that as the advertised listener.

Then you'll need to use netsh interface portproxy command from Windows CMD to forward ports from the hypervisor to the host.

Or you can just use Docker for Windows, run Kafka and configure listeners there, and it'll forward ports correctly on its own

Source https://stackoverflow.com/questions/71569699

QUESTION

Kafka Consumer is not receiving Messages on docker

Asked 2022-Mar-01 at 17:30

I'm a begginer on kafka as well as docker, I have been doing a course and working with kafka producer and consumer but for some reason it is not working. When I do use of the producer the message are saved in the topic (I have already checked it) but when I try to get the message using the consumer it is not working and I have no idea why.

It had worked previously but not anymore.

The unique difference I have in this case is that I'm using the confluentinc image instead of the bitnami image.

So, if anyone has any idea or solution I would really appreciate it.

I share my compose and an screenshot so you can see it.

...

ANSWER

Answered 2022-Mar-01 at 17:30

Take a look at docker-compose logs broker...

You should see a lot of Error processing create topic request CreatableTopic(name='__consumer_offsets', numPartitions=50, replicationFactor=3

Without a valid __consumer_offsets topic, no consumer will be able to run and commit offsets. Similarly, transactions won't work either (which are enabled by default in latest Kafka)

Add these variables and re-create the containers

Source https://stackoverflow.com/questions/71299048

QUESTION

Kafka Listeners - how many?

Asked 2021-Dec-28 at 15:38

Update I'm updating this post to reflect the current configuration (and also, following @OneCricketeer response, more info)

According to this 2018 blog (which everyone seems to refer to) I am running Kafka (in a Docker Compose stack) with this configuration:

...

ANSWER

Answered 2021-Dec-21 at 17:15

Never modify /etc/hosts to "fix" your listeners.

Nothing has changed until Kafka completely removes the need for Zookeeper.

lead me to believe that either I'm missing something in the configuration of the container

There are default listeners, but ports in Docker Compose has nothing to do with the actual broker server configuration. There are not two ports listening for external traffic. Only one for each internal and external.

Note that you are returned kafka0, as per your advertised setting, which is not the hostname you've set in your compose file, so your internal clients will have errors resolving hostname kafka0...

seems that Kafka only listens on port 29092 when started like this

It listens on both just fine.

Source https://stackoverflow.com/questions/70432268

QUESTION

Unable for .NET client to send messages to Kafka on Docker

Asked 2021-Sep-01 at 10:10

I have set up Zookeeper and Apache Kafka on Docker (Windows) using the following docker-compose.yml:

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ANSWER

Answered 2021-Sep-01 at 10:10

Managed to get it working by modifying the docker-compose.yml specifically kafka's ports and KAFKA_ADVERTISED_LISTENERS; and removed KAFKA_LISTENERS.

Source https://stackoverflow.com/questions/69009339

QUESTION

Cannot connect to kafka from ourside of its docker container

Asked 2021-Aug-30 at 00:40

This is my docker compose file:

...

ANSWER

Answered 2021-Aug-30 at 00:39

You've forwarded the wrong port

9093 on the host needs to map to the localhost:9093 advertised port

Otherwise, you're connecting to 9093, which returns kafka:9092, as explained in the blog. Container hostnames cannot be resolved by the host, by default

Source https://stackoverflow.com/questions/68975387

QUESTION

Connection to Kafka broker in Docker container fails

Asked 2021-Jul-30 at 18:17

I'm trying to get a simple Debezium stack (with Docker Compose) running but the connection to the Kafka broker fails.

Here is my simplified docker-compose.yml:

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ANSWER

Answered 2021-Jul-30 at 18:17

You've set a listener to only be local, not external.

Change to

Source https://stackoverflow.com/questions/68586043

QUESTION

console-producer Error connecting to node kafka1:9092 (org.apache.kafka.clients.NetworkClient) java.net.UnknownHostException

Asked 2020-Mar-04 at 15:18

I am starting a container with kafka via docker-compose successfully. By successfully I mean, I can log in such kafka container and produce and consume messages straight from there. Also I can see another container (filebeat) depending on such kafka container connecting successfully.

docker-compose.yml

...

ANSWER

Answered 2020-Mar-04 at 15:18

KAFKA_ADVERTISED_PORT is deprecated. Just use the advertised listeners.
Your advertised listeners are the Docker service name, not a resolvable address to any code running outside of a container on that same Docker network.
You'll want to add in KAFKA_LISTENER_SECURITY_PROTOCOL_MAP
Just use an existing, functional Docker Compose

Btw, links is a deprecated Compose option too

Source https://stackoverflow.com/questions/60496310

QUESTION

Kafka Listener is not working! It is isolated in intranet

Asked 2020-Jan-07 at 15:36

My Kafka node is hosted in Google Cloud Dataproc. However, we realized that the Kafka installed through default initialization script is set up in such a way that it only allows intranet access. It is completely isolated from the outside world. The producer outside the google cloud network can't publish the message to Kafka and the Kafka message can't chain to its extranet subscriber.

Remark

I have whitelisted the producer IP

After read thru the other StackOverflow, blog post and documentation. I think it could due to advertised.listeners parts of Socket Server Settings in /usr/lib/kafka/server.properties.

First solution

I added advertised.listeners=PLAINTEXT://[External_IP]:19092

then sudo /etc/init.d/kafka-server restart

OUTCOME

However, when I trying to Kafkacat or telnet, it always failed. I also tested advertised.listeners with various port

Second solution from https://rmoff.net/2018/08/02/kafka-listeners-explained/

...

ANSWER

Answered 2020-Jan-06 at 23:18

Here is what worked for my cluster:

I've set the following properties from the second solution:

Source https://stackoverflow.com/questions/59589978

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

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