Unable to start kafka with zookeeper (kafka.common.InconsistentClusterIdException)

Question

Below the steps I did to get this issue :

1. Launch ZooKeeper
2. Launch Kafka : .\bin\windows\kafka-server-start.bat .\config\server.properties

And at the second step the error happens :

ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer) kafka.common.InconsistentClusterIdException: The Cluster ID Reu8ClK3TTywPiNLIQIm1w doesn't match stored clusterId Some(BaPSk1bCSsKFxQQ4717R6Q) in meta.properties. The broker is trying to join the wrong cluster. Configured zookeeper.connect may be wrong. at kafka.server.KafkaServer.startup(KafkaServer.scala:220) at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:44) at kafka.Kafka$.main(Kafka.scala:84) at kafka.Kafka.main(Kafka.scala)

When I trigger .\bin\windows\kafka-server-start.bat .\config\server.properties zookeeper console returns :

INFO [SyncThread:0:FileTxnLog@216] - Creating new log file: log.1

How to fix this issue to get kafka running ?

Edit You can access to the proper issue on the right site (serverfault) here

Edit Here is the Answer

Answer 1

I managed to Solve this issue with the following steps :

1. Just Delete all the log/Data file created (or generated) into zookeeper and kafka.
2. Run Zookeper
3. Run Kafka

[Since this post is open again I post my answer there so you got all on the same post]

Answer 2

** 1. The easiest solution is to remove kafka logs and start again.

** 2. But the root cause is Kafka saved failed cluster ID in meta.properties.**

Try to delete kafka-logs/meta.properties from your tmp folder, which is located in C:/tmp folder by default on windows, and /tmp/kafka-logs on Linux

if kafka is running in docker containers, the log path may be specified by volume config in the docker-compose - see docs.docker.com/compose/compose-file/compose-file-v2/#volumes -- Chris Halcrow

** 3. How to find Kafka log path:**

Open server server.properties file which is located in your kafka folder kafka_2.11-2.4.0\config\server.properties (considering your version of kafka, folder name could be kafka_<kafka_version>):

Then search for entry log.dirs to check where logs locate log.dirs=/tmp/kafka-logs