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From "Sam Liu (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (KAFKA-3090) Zookeeper disconnects with "can't find default realm" message
Date Fri, 15 Jul 2016 10:10:20 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15379152#comment-15379152
] 

Sam Liu edited comment on KAFKA-3090 at 7/15/16 10:09 AM:
----------------------------------------------------------

Hi Mohit,
 what was the issue with the krb5.conf file?I am facing a similar issue.


was (Author: liuxinjian):
Hi Mohit,
 what's the issue with the krb5.conf file?I am facing a similar issue.

> Zookeeper disconnects with "can't find default realm" message
> -------------------------------------------------------------
>
>                 Key: KAFKA-3090
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3090
>             Project: Kafka
>          Issue Type: Bug
>          Components: security
>         Environment: RHEL 6
>            Reporter: Mohit Anchlia
>
> Server disconnects from the zookeeper with the following log. It appears that it can't
determine the realm even though the setup I performed looks ok.
> 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
> 3) [2016-01-12 14:53:13,132] WARN SASL configuration failed: javax.security.auth.login.LoginException:
Cannot locate default realm Will continue connection to Zookeeper server without SASL authentication,
if Zookeeper server allows it. (org.apache.zookeeper.ClientCnxn)
> [2016-01-12 14:53:13,134] INFO Opening socket connection to server localhost/127.0.0.1:2181
(org.apache.zookeeper.ClientCnxn)
> [2016-01-12 14:53:13,134] INFO zookeeper state changed (AuthFailed) (org.I0Itec.zkclient.ZkClient)
> [2016-01-12 14:53:13,139] INFO Accepted socket connection from /127.0.0.1:53028 (org.apache.zookeeper.server.NIOServerCnxnFactory)
> [2016-01-12 14:53:13,139] INFO Socket connection established to localhost/127.0.0.1:2181,
initiating session (org.apache.zookeeper.ClientCnxn)
> [2016-01-12 14:53:13,142] INFO Client attempting to establish new session at /127.0.0.1:53028
(org.apache.zookeeper.server.ZooKeeperServer)
> [2016-01-12 14:53:13,144] INFO Established session 0x152376012690001 with negotiated
timeout 6000 for client /127.0.0.1:53028 (org.apache.zookeeper.server.ZooKeeperServer)
> [2016-01-12 14:53:13,146] INFO Session establishment complete on server localhost/127.0.0.1:2181,
sessionid = 0x152376012690001, negotiated timeout = 6000 (org.apache.zookeeper.ClientCnxn)
> [2016-01-12 14:53:13,146] INFO zookeeper state changed (SyncConnected) (org.I0Itec.zkclient.ZkClient)
> [2016-01-12 14:53:19,087] INFO Terminate ZkClient event thread. (org.I0Itec.zkclient.ZkEventThread)
> [2016-01-12 14:53:19,088] INFO Processed session termination for sessionid: 0x152376012690001
(org.apache.zookeeper.server.PrepRequestProcessor)
> [2016-01-12 14:53:19,089] INFO Session: 0x152376012690001 closed (org.apache.zookeeper.ZooKeeper)
> [2016-01-12 14:53:19,089] INFO EventThread shut down (org.apache.zookeeper.ClientCnxn)
> [2016-01-12 14:53:19,089] INFO Closed socket connection for client /127.0.0.1:53028 which
had sessionid 0x152376012690001 (org.apache.zookeeper.server.NIOServerCnxn)
> [2016-01-12 14:53:19,090] 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)



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