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https://issues.apache.org/jira/browse/SOLR-6736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597334#comment-14597334
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Noble Paul commented on SOLR-6736:
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We need a change of plan right now.

The problem I see is that this handler is enabled by default right now. That 
means anyone who starts a cluster now will have this feature enabled. I propose 
a combination of a system property and the new authentication system for 
security

1) A node must be started with {{-Denable.zk.write.handler=true}} for it to 
enable this handler
2) The default security model will kick in automatically if security is enabled 
. So, we may not need to sign the payload



> A collections-like request handler to manage solr configurations on zookeeper
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-6736
>                 URL: https://issues.apache.org/jira/browse/SOLR-6736
>             Project: Solr
>          Issue Type: New Feature
>          Components: SolrCloud
>            Reporter: Varun Rajput
>            Assignee: Anshum Gupta
>            Priority: Minor
>             Fix For: 5.0, Trunk
>
>         Attachments: SOLR-6736.patch, SOLR-6736.patch, SOLR-6736.patch, 
> SOLR-6736.patch, SOLR-6736.patch, SOLR-6736.patch, newzkconf.zip, 
> test_private.pem, test_pub.der, zkconfighandler.zip, zkconfighandler.zip
>
>
> Managing Solr configuration files on zookeeper becomes cumbersome while using 
> solr in cloud mode, especially while trying out changes in the 
> configurations. 
> It will be great if there is a request handler that can provide an API to 
> manage the configurations similar to the collections handler that would allow 
> actions like uploading new configurations, linking them to a collection, 
> deleting configurations, etc.
> example : 
> {code}
> #use the following command to upload a new configset called mynewconf. This 
> will fail if there is alredy a conf called 'mynewconf'. The file could be a 
> jar , zip or a tar file which contains all the files for the this conf.
> curl -X POST -H 'Content-Type: application/octet-stream' --data-binary 
> @testconf.zip 
> http://localhost:8983/solr/admin/configs/mynewconf?sig=<the-signature>
> {code}
> A GET to http://localhost:8983/solr/admin/configs will give a list of configs 
> available
> A GET to http://localhost:8983/solr/admin/configs/mynewconf would give the 
> list of files in mynewconf



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