kafka Missing required configuration "zookeeper.connect" which has no default value - apache-kafka

Question

I setup kafka cluster in vm.
but i have a problem.
My kafka version is kafka 2.11-0.0.0
$ bin/kafka-server-start.sh config/zookeeper.properties
[2017-01-31 09:15:55,216] FATAL (kafka.Kafka$)
org.apache.kafka.common.config.ConfigException: Missing required configuration "zookeeper.connect" which has no default value.
at org.apache.kafka.common.config.ConfigDef.parse(ConfigDef.java:148)
at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:49)
at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:56)
at kafka.server.KafkaConfig.<init>(KafkaConfig.scala:702)
at kafka.server.KafkaConfig$.fromProps(KafkaConfig.scala:691)
at kafka.server.KafkaServerStartable$.fromProps(KafkaServerStartable.scala:28)
at kafka.Kafka$.main(Kafka.scala:58)
at kafka.Kafka.main(Kafka.scala)
please help me .
my zookeeper.properties (down)
zookeeper.properties
dataDir=/home/kafka01/zookeeper-data
# the port at which the clients will connect
clientPort=2181
# disable the per-ip limit on the number of connections since this is a non-production config
maxClientCnxns=0
initLimit=5
syncLimit=2
server.1=kafka01:2888:3888
server.2=kafka02:2888:3888
server.3=kafka03:2888:3888
server.properties
zookeeper.connect=kafka01:2181,kafka02:2181,kafka03:2181
what is the problem??

Answer 1

You are trying to start a kafka server but you are passing the wrong config file.
Usually you want to start a kafka server using the following command:
./kafka-server-start.sh ../config/server.properties
And is in this file where you specify the address of the zookeeper:
zookeeper.connect=kafka01:2181,kafka02:2181,kafka03:2181
The quickstart guide in the kafka official documentation is quite good, I recommend you to have a look at it. You can find it here.

Answer 2

You are trying to start kafka server with zookeeper config properties file and that's why you are getting the above error.
Use the commands below instead:
Zookeeper:
.\bin\windows\zookeeper-server-start.bat .\config\zookeeper.properties
Kafka:
.\bin\windows\kafka-server-start.bat .\config\server.properties

Answer 3

You stared the wrong script. It should be:
bin/zookeeper-server-start.sh config/zookeeper.properties

Answer 4

There are two ways you can start Kafka server:
Start the zookeeper server separately(on your local or another machine)
Start the zookeeper server which is embedded with Kafka server (kafka_2.12/libs/zookeeper-3.4.13.jar)
In first case:
I am assuming you have started the zookeeper server already and that is running on localhost:2181
So now you are good to start kafka server using following command
bin\windows\kafka-server-start.bat ..\..\config\server.properties
In server.properties file you have to tell Kafka server where is/are the zookeeper(s) running. Using property:
## zookeeper.connect=localhost:2181 [default]
zookeeper.connect=zk1:2181, zk2:2181, localhost:2181
In second case
Start the zookeeper first (embedded with the Kafka server)
bin\windows\zookeeper-server-start.bat ..\..\config\zookeeper.properties
Then, start the Kafka server:
bin\windows\kafka-server-start.bat ..\..\config\server.properties

Answer 5

This is the error because there is an issue with your command.
To start zookeeper run -
zookeeper-server-start.sh config/zookeeper.properties
To start server run -
kafka-server-start.sh config/zookeeper.properties

Answer 6

you need to start the zookeeper with
zookeeper-server-start.sh ~/kafka/config/zookeeper.properties
then you
need to start the kafka-server using
kafka-server-start.sh ~/kafka/config/server.properties
Now you kafka will run smoothly ....