CODEWITHSUNDEEP
apache-kafka
Ghouibi Ghassen
Ghouibi Ghassen

Reputation: 111

Kafka Broker may not be available on 127.0.0.1:2181

I'm trying to run a kafka cluster with this command :

kafka-topics.sh --bootstrap-server 127.0.0.1:2181 --topic first_topic --create --partitions 3 --replication-factor 1

and i get this as an error:

[2022-02-03 11:25:28,635] WARN [AdminClient clientId=adminclient-1] Connection to node -1 (/127.0.0.1:2181) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)

So i tried to look at kafka_2.12-3.1.0\config\server.properties i have

listeners=PLAINTEXT://localhost:9092

Any help will be very appreciated.

Upvotes: 7

Views: 40330

Answers (3)

Juliano Soder
Juliano Soder

Reputation: 9

In my case i fixed that error log when I configured the bootstrap-servers into application.yml:

  spring:
    profiles: dev
    kafka:
      bootstrap-servers: 127.0.0.1:2181

Maybe the only line you need is bootstrap-servers: 127.0.0.1:2181

Upvotes: 0

MOODY AMAN
MOODY AMAN

Reputation: 1

This is because your zookeeper is not working ,I was facing the same issue but when I run the zookeeper with(I am using wsl)

"zookeeper-server-start.sh ~/kafka_2.13-3.3.1/config/zookeeper.properties" command it starts working

I am running Kafka also if you don't how to run, use this command

"kafka-server-start.sh ~/kafka_2.13-3.3.1/config/server.properties"

hint- modify kafka_2.13-3.3.1 this with the correct version of kafka you are using

Upvotes: 0

Robin Moffatt
Robin Moffatt

Reputation: 32130

2181 is typically the port used by ZooKeeper. If you want to specify that, and you're not running Kafka in KRaft (zookeeper-less mode) then you need to do as @Umeshwaran said and use the --zookeeper argument.

However, you can use --bootstrap-server, but if you are doing so then specify the broker address and port, which from your listeners config is 9092:

kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --topic first_topic --create --partitions 3 --replication-factor 1

This article should clarify things.

Upvotes: 3

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