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https://issues.apache.org/jira/browse/NIFI-5041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16435216#comment-16435216
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ASF GitHub Bot commented on NIFI-5041:
--------------------------------------

GitHub user peter-toth opened a pull request:

    https://github.com/apache/nifi/pull/2630

    NIFI-5041 Adds SPNEGO authentication to LivySessionController

    Thank you for submitting a contribution to Apache NiFi.
    
    In order to streamline the review of the contribution we ask you
    to ensure the following steps have been taken:
    
    ### For all changes:
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You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/peter-toth/nifi NIFI-5041

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/nifi/pull/2630.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2630
    
----
commit 2ca8d0ea6e883b3f646a320522c9dee52bacd78f
Author: Peter Toth <ptoth@...>
Date:   2018-04-10T12:27:51Z

    NIFI-5041: Adds SPNEGO authentication to LivySessionController

----


> Add convenient SPNEGO/Kerberos authentication support to LivySessionController
> ------------------------------------------------------------------------------
>
>                 Key: NIFI-5041
>                 URL: https://issues.apache.org/jira/browse/NIFI-5041
>             Project: Apache NiFi
>          Issue Type: Improvement
>    Affects Versions: 1.5.0
>            Reporter: Peter Toth
>            Priority: Minor
>
> Livy requires SPNEGO/Kerberos authentication on a secured cluster. Initiating 
> such an authentication from NiFi is a viable by providing a 
> java.security.auth.login.config system property 
> (https://docs.oracle.com/javase/8/docs/technotes/guides/security/jgss/lab/part6.html),
>  but this is a bit cumbersome and needs kinit running outside of NiFi.
> An alternative and more sophisticated solution would be to do the SPNEGO 
> negotiation programmatically.
>  * This solution would add some new properties to the LivySessionController 
> to fetch kerberos principal and password/keytab
>  * Add the required HTTP Negotiate header (with an SPNEGO token) to the 
> HttpURLConnection to do the authentication programmatically 
> (https://tools.ietf.org/html/rfc4559)



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