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Posted to dev@kafka.apache.org by "Manikumar Reddy (JIRA)" <ji...@apache.org> on 2016/07/15 07:35:20 UTC
[jira] [Resolved] (KAFKA-3102) Kafka server unable to connect to
zookeeper
[ https://issues.apache.org/jira/browse/KAFKA-3102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Manikumar Reddy resolved KAFKA-3102.
------------------------------------
Resolution: Duplicate
> Kafka server unable to connect to zookeeper
> -------------------------------------------
>
> Key: KAFKA-3102
> URL: https://issues.apache.org/jira/browse/KAFKA-3102
> Project: Kafka
> Issue Type: Bug
> Components: security
> Environment: RHEL 6
> Reporter: Mohit Anchlia
>
> Server disconnects from the zookeeper with the following log, and logs are not indicative of any problem. It works without the security setup however.
> I followed the security configuration steps from this site: http://docs.confluent.io/2.0.0/kafka/sasl.html
> In here find the list of principals, logs and Jaas file:
> 1) Jaas file
> KafkaServer {
> com.sun.security.auth.module.Krb5LoginModule required
> useKeyTab=true
> storeKey=true
> keyTab="/mnt/kafka/kafka/kafka.keytab"
> principal="kafka/10.24.251.175@EXAMPLE.COM";
> };
> Client {
> com.sun.security.auth.module.Krb5LoginModule required
> useKeyTab=true
> storeKey=true
> keyTab="/mnt/kafka/kafka/kafka.keytab"
> principal="kafka/10.24.251.175@EXAMPLE.COM";
> };
> 2) Principles from krb admin
> kadmin.local: list_principals
> K/M@EXAMPLE.COM
> kadmin/admin@EXAMPLE.COM
> kadmin/changepw@EXAMPLE.COM
> kadmin/ip-10-24-251-175.us-west-2.compute.internal@EXAMPLE.COM
> kafka/10.24.251.175@EXAMPLE.COM
> krbtgt/EXAMPLE.COM@EXAMPLE.COM
> [2016-01-13 16:26:00,551] INFO starting (kafka.server.KafkaServer)
> [2016-01-13 16:26:00,557] INFO Connecting to zookeeper on localhost:2181 (kafka.server.KafkaServer)
> [2016-01-13 16:27:30,718] FATAL Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
> org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 6000
> at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1223)
> at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:155)
> at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:129)
> at kafka.utils.ZkUtils$.createZkClientAndConnection(ZkUtils.scala:89)
> at kafka.utils.ZkUtils$.apply(ZkUtils.scala:71)
> at kafka.server.KafkaServer.initZk(KafkaServer.scala:278)
> at kafka.server.KafkaServer.startup(KafkaServer.scala:168)
> at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:37)
> at kafka.Kafka$.main(Kafka.scala:67)
> at kafka.Kafka.main(Kafka.scala)
> [2016-01-13 16:27:30,721] INFO shutting down (kafka.server.KafkaServer)
> [2016-01-13 16:27:30,727] INFO shut down completed (kafka.server.KafkaServer)
> [2016-01-13 16:27:30,728] FATAL Fatal error during KafkaServerStartable startup. Prepare to shutdown (kafka.server.KafkaServerStartable)
> org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 6000
> at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1223)
> at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:155)
> at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:129)
> at kafka.utils.ZkUtils$.createZkClientAndConnection(ZkUtils.scala:89)
> at kafka.utils.ZkUtils$.apply(ZkUtils.scala:71)
> at kafka.server.KafkaServer.initZk(KafkaServer.scala:278)
> at kafka.server.KafkaServer.startup(KafkaServer.scala:168)
> at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:37)
> at kafka.Kafka$.main(Kafka.scala:67)
> at kafka.Kafka.main(Kafka.scala)
> [2016-01-13 16:27:30,729] INFO shutting down (kafka.server.KafkaServer)
> "server.log" 156L, 6404C
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