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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2793) [QP MutualAuth]: Implement a mechanism to build "authzHosts" for dynamic reconfig servers
Date Fri, 01 Dec 2017 18:40:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274757#comment-16274757
] 

Patrick Hunt commented on ZOOKEEPER-2793:
-----------------------------------------

> Does this make sense to you?

Yes, I believe that addresses the concern. Like I said, I don't like it that much, but it
seems like an extreme situation. Might be worth thinking about more to ensure we don't miss
anything.

One other thing is that we should ensure the documentation reflects this issue. Operations
details plus how to handle this particular situation.

> [QP MutualAuth]: Implement a mechanism to build "authzHosts" for dynamic reconfig servers
> -----------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2793
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2793
>             Project: ZooKeeper
>          Issue Type: Sub-task
>          Components: quorum, security
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>             Fix For: 3.5.4, 3.6.0
>
>
> {{QuorumServer}} will do the authorization checks against configured authorized hosts.
During LE, QuorumLearner will send an authentication packet to QuorumServer. Now, QuorumServer
will check that the connecting QuorumLearner’s hostname exists in the authorized hosts.
If not exists then connecting peer is not authorized to join this ensemble and the request
will be rejected immediately. 
> In {{branch-3.4}} building {{authzHosts}} list is pretty straight forward, can use the
ensemble server details in zoo.cfg file. But with dynamic reconfig, it has to consider the
dynamic add/remove/update servers and need to discuss the ways to handle dynamic cases.



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