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Kafka: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) #801

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sabond9 opened this issue Oct 1, 2019 · 18 comments
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Kafka: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) #801

sabond9 opened this issue Oct 1, 2019 · 18 comments

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@sabond9
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sabond9 commented Oct 1, 2019 •
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I using docker for running kafka and zookeeper. Kafka container stopped and can't connect to zookeeper. Kafka showed error

    Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
        [main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused

I'm using docker commands for running kafka and zookeeper


    docker run -d --name zookeeper -e ZOOKEEPER_CLIENT_PORT=2181 -p 2181:2181 -p 2888:2888 -p 3888:3888 confluentinc/cp-zookeeper:latest
    docker run -d --name kafka -e KAFKA_ZOOKEEPER_CONNECT=127.0.0.1:2181 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://127.0.0.1:9092 -p 9092:9092 confluentinc/cp-kafka:latest

How can I fix it?
There is the full kafka log

===> ENV Variables ...
ALLOW_UNSIGNED=false
COMPONENT=kafka
CONFLUENT_DEB_VERSION=1
CONFLUENT_MAJOR_VERSION=5
CONFLUENT_MINOR_VERSION=1
CONFLUENT_MVN_LABEL=
CONFLUENT_PATCH_VERSION=2
CONFLUENT_PLATFORM_LABEL=
CONFLUENT_VERSION=5.1.2
CUB_CLASSPATH=/etc/confluent/docker/docker-utils.jar
HOME=/root
HOSTNAME=335d4ecff726
KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://127.0.0.1:9092
KAFKA_VERSION=2.1.1cp1
KAFKA_ZOOKEEPER_CONNECT=127.0.0.1:2181
LANG=C.UTF-8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
PYTHON_PIP_VERSION=8.1.2
PYTHON_VERSION=2.7.9-1
SCALA_VERSION=2.11
SHLVL=1
ZULU_OPENJDK_VERSION=8=8.30.0.1
_=/usr/bin/env
===> User
uid=0(root) gid=0(root) groups=0(root)
===> Configuring ...
===> Running preflight checks ...
===> Check if /var/lib/kafka/data is writable ...
===> Check if Zookeeper is healthy ...
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:zookeeper.version=3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03, built on 06/29/2018 00:39 GMT
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:host.name=335d4ecff726
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.version=1.8.0_172
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.vendor=Azul Systems, Inc.
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.home=/usr/lib/jvm/zulu-8-amd64/jre
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.class.path=/etc/confluent/docker/docker-utils.jar
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.io.tmpdir=/tmp
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.compiler=<NA>
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.name=Linux
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.arch=amd64
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.version=4.9.184-linuxkit
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.name=root
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.home=/root
[main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.dir=/
[main] INFO org.apache.zookeeper.ZooKeeper - Initiating client connection, connectString=127.0.0.1:2181 sessionTimeout=40000 watcher=io.confluent.admin.utils.ZookeeperConnectionWatcher@b1bc7ed
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
[main] ERROR io.confluent.admin.utils.ClusterStatus - Timed out waiting for connection to Zookeeper server [127.0.0.1:2181].
[main-SendThread(localhost:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
[main] INFO org.apache.zookeeper.ZooKeeper - Session: 0x0 closed
[main-EventThread] INFO org.apache.zookeeper.ClientCnxn - EventThread shut down for session: 0x0
@orbitwebsig
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orbitwebsig commented Dec 23, 2019 •
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I have the same issue ~ hungry for the solution :( Did you ever find?

From some other thread ( https://github.com/bitnami/bitnami-docker-kafka/issues/37 ), supposedly these commands worked but I haven't tested them yet:

$ docker network create app-tier
$ docker run -p 5000:2181 -e ALLOW_ANONYMOUS_LOGIN=yes --network app-tier --name zookeeper-server bitnami/zookeeper:latest
$ docker run -p 9092:9092 -e ALLOW_PLAINTEXT_LISTENER=yes -e KAFKA_ZOOKEEPER_CONNECT=zookeeper-server:2181 --network app-tier --name kafka-server bitnami/kafka:latest

@Keerthikan
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I resolved my issue - it was due to a misconfiguration, the ip address it was trying to reach was incorrect. Could be the same for you?

@rehamfahmy
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I have the same issue,we want to solve it asap.could anyone tell me the solution or what cause this problem?

@ghost
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ghost commented Mar 2, 2020

INFO Socket error occurred: localhost/127.0.0.1:2181: Connection refused (org.apache.zookeeper.ClientCnxn)
Still facing the same issue anyone please help me.

@ghost
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ghost commented Mar 2, 2020

there is similar error on this ticket, and the user seems to have resolved it by adding
" cluster.enable=true " but im not sure to which config file..
pinpoint-apm/pinpoint#1369

@deadzg
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deadzg commented Mar 31, 2020 •
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In the kafka docker run command, give the IP address of zk container
Assumption: zk and kafka in the same network.

Below is the sample:
docker run -d -p 2181:2181 --name=adv-zk -e ZOOKEEPER_CLIENT_PORT=2181 -e ZOOKEEPER_TICK_TIME=2000 -e ZOOKEEPER_SYNC_LIMIT=2 confluentinc/cp-zookeeper:5.4.0

This will spin up zookeeper container and add it to default network.
Look for the ip address from the network for the zk-container: docker inspect <network-name>

Spin up kafka as below:
docker run -d --net=<same-network-as-of-zk> --name=adv-kafka-1 -p 9093:9093 -e KAFKA_ZOOKEEPER_CONNECT="<zk-ip>:2181" -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://localhost:29092 -e KAFKA_BROKER_ID=1 confluentinc/cp-kafka:5.4.0

@ketanpokar
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check whether you zookeeper is running on the port where your kafka instance is trying to connect zookeeper.

@sairameshv
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sairameshv commented Sep 14, 2020 •
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The following chunk of code might help you in running zookeeper as well as kafka successfully.

  • Start the zookeeper
    docker run --name=zookeeper -d -e ZOOKEEPER_CLIENT_PORT=2181 -p 2181:2181 -p 2888:2888 -p 3888:3888 confluentinc/cp-zookeeper:latest
  • Fetch the zookeeper's container IP
    Zookeeper_Server_IP=$(docker inspect zookeeper --format='{{ .NetworkSettings.IPAddress }}')
  • Start the Kafka server
    docker run --name=kafka -e KAFKA_ZOOKEEPER_CONNECT=${Zookeeper_Server_IP}:2181 -e KAFKA_LISTENERS=PLAINTEXT://localhost:9092 -d -p 9092:9092 confluentinc/cp-kafka:latest

@sabond9 , This should be solving the issue that you are facing

@OneCricketeer
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OneCricketeer commented Sep 16, 2020 •
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Better to use either

  • docker network create <name> and docker run --network=<name> -e KAFKA_ZOOKEEPER_CONNECT=zookeeper:2181 with zookeeper on same network
  • Docker Compose (provided in repo)

@01willtx
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Try what @sairameshv specified, it resolved this issue for me.

@karankumarshreds
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karankumarshreds commented Feb 10, 2021 •
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The issue is the ZKP does not run on the localhost ie 127.0.0.1 (default network)

  1. You need to check the actual IP allocated to it using:
docker inspect zookeeper --format='{{ .NetworkSettings.IPAddress }}'
  1. Take the output and use it as the ZKP IP address while running the KAFKA container:
docker run --name=kafka \
 -e KAFKA_ZOOKEEPER_CONNECT=<ip_from_above>:2181 \
 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://127.0.0.1:9092 \
 -p 9092:9092 confluentinc/cp-kafka:latest

This should work fine, it works fine for me (on both windows and linux)

@ghost
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ghost commented Apr 25, 2021

Using the Docker 'host' network mode instead of the default 'bridge' mode might help, at least this is the working solution for my project. The 'host' network mode bypasses the IP issue by using the network stack of the Docker host directly instead of creating an isolated Docker network.

As an example see: https://github.com/mwatzer/kafka-connect-transforms-json-extractor-test/blob/main/docker/kafka/docker-compose.yml

@mail2shobz
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Using the Docker 'host' network mode instead of the default 'bridge' mode might help, at least this is the working solution for my project. The 'host' network mode bypasses the IP issue by using the network stack of the Docker host directly instead of creating an isolated Docker network.

As an example see: https://github.com/mwatzer/kafka-connect-transforms-json-extractor-test/blob/main/docker/kafka/docker-compose.yml

Yes it works Thanks Buddy......

@sparween1101
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The following chunk of code might help you in running zookeeper as well as kafka successfully.

  • Start the zookeeper
    docker run --name=zookeeper -d -e ZOOKEEPER_CLIENT_PORT=2181 -p 2181:2181 -p 2888:2888 -p 3888:3888 confluentinc/cp-zookeeper:latest
  • Fetch the zookeeper's container IP
    Zookeeper_Server_IP=$(docker inspect zookeeper --format='{{ .NetworkSettings.IPAddress }}')
  • Start the Kafka server
    docker run --name=kafka -e KAFKA_ZOOKEEPER_CONNECT=${Zookeeper_Server_IP}:2181 -e KAFKA_LISTENERS=PLAINTEXT://localhost:9092 -d -p 9092:9092 confluentinc/cp-kafka:latest

@sabond9 , This should be solving the issue that you are facing

This worked for me. Thank you very much :)

@hsethiya-github
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If you are running kafka on windows , run below command ... it will work as well .

zookeeper-server-start.bat .\etc\kafka\zookeeper.properties

@njmsaikat
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127.0.0.1
I think usually it's just the default docker network IP : 172.17.0.3:2181
to connect to zookeeper and kafka exposed in localhost : 172.0.0.1:9092

@tomipolz
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tomipolz commented Feb 6, 2023 •
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after using the following:
docker inspect zookeeper
(assuming zookeeper is the container name of the zookeeper image)

when running kafka image, one of the following parameters:
-e KAFKA_ZOOKEEPER_CONNECT=172.17.0.3:2181
worked for me when attempting to run kafka image with zookeeper already running
is the 172.17.0.3:2181 same for everyone?

the entire command line is:
docker run --name kafka -p 9092:9092 -e KAFKA_ZOOKEEPER_CONNECT=172.17.0.3:2181 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://localhost:9092 -e KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR=1 confluentinc/cp-kafka

@tomipolz
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tomipolz commented Feb 6, 2023 •
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after using the following: docker inspect zookeeper (assuming zookeeper is the container name of the zookeeper image)

when running kafka image, one of the following parameters: -e KAFKA_ZOOKEEPER_CONNECT=172.17.0.3:2181 worked for me when attempting to run kafka image with zookeeper already running is the 172.17.0.3:2181 same for everyone?

the entire command line is: docker run --name kafka -p 9092:9092 -e KAFKA_ZOOKEEPER_CONNECT=172.17.0.3:2181 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://localhost:9092 -e KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR=1 confluentinc/cp-kafka

after deleting and restoring images, the ip has changed to 172.17.0.2:2181
this has to be checked by docker inspect <zookeeper container name>

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