[jira] [Commented] (ZOOKEEPER-2014) Only admin should be allowed to reconfig a cluster

["Alexander Shraer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432063#comment-15432063 ] 

Alexander Shraer commented on ZOOKEEPER-2014:
---------------------------------------------

Hi Michael, all of this sounds good to me except for moving getConfig to ZooKeeperAdmin. I've explained why several times in the thread above (search for "getconfig"), please let me know if you disagree.

> Only admin should be allowed to reconfig a cluster
> --------------------------------------------------
>
>                 Key: ZOOKEEPER-2014
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2014
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.0
>            Reporter: Raul Gutierrez Segales
>            Assignee: Michael Han
>            Priority: Blocker
>             Fix For: 3.5.3
>
>         Attachments: ZOOKEEPER-2014.patch
>
>
> ZOOKEEPER-107 introduces reconfiguration support via the reconfig() call. We should, at the very least, ensure that only the Admin can reconfigure a cluster. Perhaps restricting access to /zookeeper/config as well, though this is debatable. Surely one could ensure Admin only access via an ACL, but that would leave everyone who doesn't use ACLs unprotected. We could also force a default ACL to make it a bit more consistent (maybe).
> Finally, making reconfig() only available to Admins means they have to run with zookeeper.DigestAuthenticationProvider.superDigest (which I am not sure if everyone does, or how would it work with other authentication providers). 



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