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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8373) KerberosPlugin: Using multiple nodes on same machine leads clients to fetch TGT for every request
Date Mon, 08 Feb 2016 22:36:40 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15137877#comment-15137877
] 

ASF subversion and git services commented on SOLR-8373:
-------------------------------------------------------

Commit 9ef144ddefe21f30c1c9ebd5246e7e03387488e1 in lucene-solr's branch refs/heads/branch_5_4
from [~jpountz]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=9ef144d ]

SOLR-8460, SOLR-8373, SOLR-8422, SOLR-7462, SOLR-8470: Add CHANGES entries for 5.4.1.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_5_4@1724198 13f79535-47bb-0310-9956-ffa450edef68


> KerberosPlugin: Using multiple nodes on same machine leads clients to fetch TGT for every
request
> -------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-8373
>                 URL: https://issues.apache.org/jira/browse/SOLR-8373
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Ishan Chattopadhyaya
>            Assignee: Noble Paul
>            Priority: Critical
>             Fix For: 5.3.2, 5.5, Trunk, 5.4.1
>
>         Attachments: SOLR-8373.patch, SOLR-8373.patch, SOLR-8373.patch, SOLR-8373.patch,
SOLR-8373.patch
>
>
> Kerberized solr nodes accept negotiate/spnego/kerberos requests and processes them. It
also passes back to the client a cookie called "hadoop.auth" (which is currently unused, but
will eventually be used for delegation tokens). 
> If two or more nodes are on the same machine, they all send out the cookie which have
the same domain (hostname) and same path, but different cookie values.
> Upon receipt at the client, if a cookie is rejected (which in this case will be), the
client gets a​​ TGT from the KDC. This is causing the heavy traffic at the KDC, plus intermittent
"Request is a replay" (which indicates race condition at KDC while handing out the TGT for
the same principal). I think having a (well configured) ticket cache is a potential solution,
but having cookies get rejected is bad enough.



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