If you enable SSL on ranger, you need to update the truststore. Please refer http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_security/content/configure_ambari_ranger_ssl.html
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Hbase generates large amount of audit logs, so consider that when storing them in audit DB. Audit to DB support is removed from HDP 2.5, so you should consider Solr sooner rather than later.
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Ranger plugins refresh policies from ranger admin every 30 seconds. You can monitor this in Ranger UI -> Audit -> plugins screen and notice when the changes have been downloaded.
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