Can't start zookeeper

user_5924113 0
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I'm using confluent platform, the zookeeper is active with status lookup. but when I try to start kafka with confluent it shows zookeeper is down.

$ sudo service zookeeper status
Redirecting to /bin/systemctl status  zookeeper.service
● zookeeper.service - Zookeeper
   Loaded: loaded (/etc/systemd/system/zookeeper.service; disabled; vendor preset: disabled)
   Active: active (running) since Tue 2017-08-08 17:25:34 PDT; 16h ago
     Docs: http://kafka.apache.org/documentation.html
  Process: 3774 ExecStop=/var/www/confluent/bin/zookeeper-server-stop (code=exited, status=1/FAILURE)
 Main PID: 3785 (java)
   CGroup: /system.slice/zookeeper.service
           └─3785 java -Xmx512M -Xms512M -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC -Djava.awt.headless=true -Xloggc:/var/log...

 zookeeper[3785]: [2017-08-08 17:26:09,005] INFO Processed session termination for sessionid: 0x15dc460fd0c0000 (org.apache.zooke...Processor)
 zookeeper[3785]: [2017-08-08 17:26:39,000] INFO Expiring session 0x15dc4364baf0004, timeout of 60000ms exceeded (org.apache.zook...perServer)
 zookeeper[3785]: [2017-08-08 17:26:39,000] INFO Expiring session 0x15dc4364baf0002, timeout of 60000ms exceeded (org.apache.zook...perServer)
 zookeeper[3785]: [2017-08-08 17:26:39,000] INFO Expiring session 0x15dc4364baf0003, timeout of 60000ms exceeded (org.apache.zook...perServer)
 zookeeper[3785]: [2017-08-08 17:26:39,001] INFO Processed session termination for sessionid: 0x15dc4364baf0004 (org.apache.zooke...Processor)
 zookeeper[3785]: [2017-08-08 17:26:39,002] INFO Processed session termination for sessionid: 0x15dc4364baf0002 (org.apache.zooke...Processor)
 zookeeper[3785]: [2017-08-08 17:26:39,002] INFO Processed session termination for sessionid: 0x15dc4364baf0003 (org.apache.zooke...Processor)
 zookeeper[3785]: [2017-08-09 09:56:26,711] INFO Accepted socket connection from /127.0.0.1:46446 (org.apache.zookeeper.server.NI...xnFactory)
 zookeeper[3785]: [2017-08-09 09:59:14,796] WARN Exception causing close of session 0x0 due to java.io.IOException: Len error -72...erverCnxn)
 zookeeper[3785]: [2017-08-09 09:59:14,796] INFO Closed socket connection for client /127.0.0.1:46446 (no session established for...erverCnxn)
Hint: Some lines were ellipsized, use -l to show in full.

$ confluent start kafka
Starting zookeeper
|Zookeeper failed to start
zookeeper is [DOWN]
Cannot start Kafka, Zookeeper is not running. Check your deployment
confluent-platform apache-kafka apache-zookeeper
5 Answers

I received the same message. In my case I didn't set $JAVA_HOME variable properly.

user_42917760

You are mixing two installations.

confluent start kafka would depend on you running confluent start zookeeper.

Rather, it seems you already have systemctl running Zookeeper, so you should ideally just configure your server.properties and use the regular kafka-server-start script. And/or create a systemctl file for Kafka.

user_23086830

  1. run $ confluent log zookeeper you will be able to see the log for any errors

  2. there is high chance zookeeper is already running and using the port 2181,

use $ sudo lsof -i :1-2181 to see which process is using that port and try to kill and try again or

run $ sudo netstat -plten | grep java to see processes and ports they are on.

run kill -9 <pid> to kill the process.

user_15634690
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