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https://issues.apache.org/jira/browse/NIFI-866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14703697#comment-14703697
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Joseph Witt commented on NIFI-866:
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Nice! Is patch.2 all that is necessary or does it build on patch.1?
> Kerberos support for Hadoop processors
> ---------------------------------------
>
> Key: NIFI-866
> URL: https://issues.apache.org/jira/browse/NIFI-866
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Extensions
> Reporter: Ricky Saltzer
> Assignee: Ricky Saltzer
> Attachments: NIFI-866.2.patch, NIFI-866.patch,
> multiprincipal_secure_nonsecure.png
>
>
> Currently the AbstractHadoopProcessor only supports talking to non-kerberos
> Hadoop clusters. Even though the user might be supplying a Hadoop
> configuration which indicates the authentication implementation is Kerberos,
> NiFi will still attempt to connect via SIMPLE authentication. This results in
> a processor exception.
> *Goals:*
> * Minimal configuration for Kerberos support
> * Shouldn't have to configure individual processors (e.g. user could have
> tens to hundreds of these processors)
> *Non-Goals:*
> * Support more than one kerberos principal at a time
> * Support both secure and non-secure connections at the same time
> *Basic Usage Proposal:*
> Edit _conf/nifi.properties_ and modify the following values
> {code:title=nifi.properties|borderStyle=solid}
> ..
> # kerberos #
> nifi.kerberos.enabled=true
> nifi.kerberos.krb5.file=/path/to/krb5.conf
> nifi.kerberos.keytab=/path/to/user.keytab
> nifi.kerberos.principal=user@REALM
> {code}
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