# PKI authentication for "elastic" user

**URL:** <https://discuss.elastic.co/t/pki-authentication-for-elastic-user/178960>\
**Category:** Elasticsearch\
**Created:** [April 29, 2019, 4:09pm UTC](https://discuss.elastic.co/t/pki-authentication-for-elastic-user/178960 "2019-04-29T16:09:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![tiuser4567](https://avatars.discourse-cdn.com/v4/letter/t/8dc957/32.png) [@tiuser4567](https://discuss.elastic.co/u/tiuser4567)\
**Post date:** [April 29, 2019, 4:11pm UTC](https://discuss.elastic.co/t/pki-authentication-for-elastic-user/178960/2 "2019-04-29T16:11:02Z")

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Sorry, found the answer, it is using the "reserved" realm.

Didn't find "reserved" realm in the documentation "[https://www.elastic.co/guide/en/elastic-stack-overview/7.0/setting-up-authentication.html](https://www.elastic.co/guide/en/elastic-stack-overview/7.0/setting-up-authentication.html)"

but only through another post [Authentication of [elastic] was terminated by realm [reserved]](https://discuss.elastic.co/t/authentication-of-elastic-was-terminated-by-realm-reserved/112206)

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