Github user nickwallen commented on the issue:
https://github.com/apache/incubator-metron/pull/288
If I manually login to each ES master and remove the `http.cors.enabled =
true` from `/etc/elasticsearch/elasticsearch.yml` then restart ES, I am able to
connect to ES with Kibana.
Of course, once Ambari gets involved it undoes my manual edit. I have not
yet figured out how to 'unset' this through Ambari yet.
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