[jira] [Created] (ZOOKEEPER-3206) Can't use Active Directory for Kerberos Authentication

["Stephane Maarek (JIRA)" <ji...@apache.org>]

Stephane Maarek created ZOOKEEPER-3206:
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             Summary: Can't use Active Directory for Kerberos Authentication
                 Key: ZOOKEEPER-3206
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3206
             Project: ZooKeeper
          Issue Type: Bug
          Components: kerberos
    Affects Versions: 3.4.13
            Reporter: Stephane Maarek


We're using Active Directory, and created service principals this way:

{code}
ktpass -princ ZOOKEEPER/host-1@TEST -mapuser zookeeper -mapOp  add -Target TEST
ktpass -princ ZOOKEEPER/host-2@TEST -mapuser zookeeper -mapOp  add -Target TEST
ktpass -princ ZOOKEEPER/host-3@TEST -mapuser zookeeper -mapOp  add -Target TEST
{code}

Using this format, one is not able to do {code}kinit ZOOKEEPER/host-1@TEST{code}, but one is able to do {code}kinit zookeeper@TEST -S ZOOKEEPER/host-1@TEST{code} to obtain a service ticket. 

In the Kafka project, it is fine for the SASL file to have {code}principal="kafka@TEST"{code}, and automatically it seems it acquires the correct service ticket (I"m not sure how).

In zookeeper, things fail when a client tries to connect, due to this line:
https://github.com/apache/zookeeper/blob/master/zookeeper-server/src/main/java/org/apache/zookeeper/util/SecurityUtils.java#L170

It'd be great for Zookeeper server to have the same kind of mechanism as Kafka for accepting client connections. This would allow us to have {code}principal="zookeeper@TEST"{code} in SASL. Otherwise, maybe support a JAAS new option so we can explicitly name the service ?

FYI - trying {code}principal="zookeeper/host-1@TEST"{code} does not work as due to how Active Directory works, it complains that the credentials cannot be found in the database (as we try to authenticate using the service name, not the user name)

I'm attaching some documentation I find relevant: https://serverfault.com/questions/682374/client-not-found-in-kerberos-database-while-getting-initial/683058#683058 




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