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From "Michael Han (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3476) Identify client request for quota control
Date Tue, 30 Jul 2019 16:50:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16896317#comment-16896317

Michael Han commented on ZOOKEEPER-3476:

The design looks good to me.

I have a patch that supports explicitly specifying client id as a string from user. It does
not require auth though, which means a malicious user could impersonate another user thus
potentially compromise the quota throttling. Though, in our environment, we think all our
clients are trustable and this is not a problem for us. This might be useful for use cases
where users don't want to enable auth.

This JIRA seems imply that to support client-id, authentication must be enabled. Do we want
to enforce this moving forward, or do we also want to support client-id without authentication
(for use case in a "trustable" environment)? 

> Identify client request for quota control
> -----------------------------------------
>                 Key: ZOOKEEPER-3476
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3476
>             Project: ZooKeeper
>          Issue Type: Sub-task
>          Components: server
>            Reporter: Mocheng Guo
>            Priority: Major
> In order to support quota, we need a way to identify clients. If security is enabled,
we might be able to use secured identity inside client certificate. But a generalized client-id
based approach would be better to cover scenario without security.
> The proposal here is to utilize existing zookeeper auth protocol to accept client identity.
>  # The client id should be sent by client once connection is established.
>  # Sending client id is optional. Note that server needs to enable auth provider if client
does send in client id auth request or request would be denied without auth provider on server
>  # client id is JSON withe client_id as mandatory field. Additional fields can be added
like client contact information, client version...
>  # This client identity will be cached in server connection and attached to requests
from the connection.

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