This article documents an OSGI configuration file name change. This name change is the result of a known issue that Liferay platform users have experienced while using Elasticsearch 6 with their Liferay DXP 7.0 environment.
Compatibility with Elasticsearch 6 has been introduced for environments patched with Fix Pack DE-42 and above. See LPS-77358.
Resolution
Earlier supported versions of Elasticsearch used:
com.liferay.portal.search.elasticsearch.configuration.ElasticsearchConfiguration.config
If you are currently operating with Elasticsearch 6, please use:
com.liferay.portal.search.elasticsearch6.configuration.ElasticsearchConfiguration.cfg