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I cannot start zookeeper

I am new to kafka world, I want to start zookeeper then when I type this

bin/zookeeper-server-start.sh config/zookeeper.properties

I got the following error:

ERROR Unexpected exception, exiting abnormally  (org.apache.zookeeper.server.ZooKeeperServerMain)
java.net.BindException: Address already in use

ERROR Unexpected exception, exiting abnormally (org.apache.zookeeper.server.ZooKeeperServerMain)
java.net.BindException: Address already in use

Then I tried netstat -nlp|grep 2181

it but the process doesn't work

tcp        0      0 0.0.0.0:2181            0.0.0.0:*               LISTEN      -

Some light please

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4 answers


Sounds like a zookeeper server.

try:

bin/zkServer.sh stop

from the zookeeper directory to close it and then:



bin/zookeeper-server-start.sh config/zookeeper.properties

from catalog kafka

This fixed my problem

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There must be some process using port 2181. I had the same problem. First I checked the server state:

/usr/share/zookeeper$ bin/zkServer.sh status

or



/usr/share/zookeeper$ echo status | nc 127.0.0.1 2181

Then I tried to start kafka and it failed with the same error. I changed the resolution and it worked like sudo .. it didn't work either. As I have not seen any process using the port. I restarted my computer and it works!

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Maybe another user starts this process. check using jps if any process running Quorum kills it then try

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Check if it is executed zookeeper

or not using this command.

bin/kafka-topics.sh --list --zookeeper localhost:2181

Check to see if you have the number of topics if you are getting anything that means Zookeeper is already running. So, check if Zookeeper is running or not.

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