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https://issues.apache.org/jira/browse/NIFI-3011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15664940#comment-15664940
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Andy LoPresto commented on NIFI-3011:
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It appears it does not mention it in the main X-Pack documentation, but in the
[advanced
settings|https://www.elastic.co/guide/en/x-pack/current/security-settings.html#_java_keystore_files],
there does appear to still be an option for keystore and truststore files and
passwords. In addition, it appears there is an option for
{{xpack.ssl.key_passphrase}}, which would allow a password to be used with
{{xpack.ssl.key}} as mentioned above.
> Support Elasticsearch 5.0 for Put/FetchElasticsearch processors
> ---------------------------------------------------------------
>
> Key: NIFI-3011
> URL: https://issues.apache.org/jira/browse/NIFI-3011
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
>
> Now that Elastic has released a new major version (5.0) of Elasticsearch, the
> Put/FetchElasticsearch processors would need to be upgraded (or duplicated)
> as the major version of the transport client needs to match the major version
> of the Elasticsearch cluster.
> If upgrade is selected, then Put/FetchES will no longer work with
> Elasticsearch 2.x clusters, so in that case users would want to switch to the
> Http versions of those processors. However this might not be desirable (due
> to performance concerns with the HTTP API vs the transport API), so care must
> be taken when deciding whether to upgrade the existing processors or create
> new ones.
> Creating new versions of these processors (to use the 5.0 transport client)
> will also take some consideration, as it is unlikely the different versions
> can coexist in the same NAR due to classloading issues (multiple versions of
> JARs containing the same class names, e.g.). It may be necessary to create an
> "elasticsearch-5.0" version of the NAR, containing only the new versions of
> these processors.
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