# Logstash certificate not trusted **URL:** \ **Category:** Elasticsearch\ **Tags:** elastic-stack-security\ **Created:** [October 21, 2015, 4:57pm UTC](https://discuss.elastic.co/t/logstash-certificate-not-trusted/32701 "2015-10-21T16:57:04Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![soodlikesjava](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@soodlikesjava](https://discuss.elastic.co/u/soodlikesjava)\ **Post date:** [October 22, 2015, 4:28am UTC](https://discuss.elastic.co/t/logstash-certificate-not-trusted/32701/4 "2015-10-22T04:28:04Z")
For PKI auth I have raised an issue which you can follow here > [@PKI authentication in logstash Elastic Search Output not working](https://discuss.elastic.co/t/pki-authentication-in-logstash-elastic-search-output-not-working/32738): > > Hi all, I am trying to achieve PKI auth in Logstash elastic search output plugin using shield trail license .Below are my configs Logstash : output { elasticsearch { cluster =\> "abc" host =\> ["host1","host2:port"] protocol : "http" ssl =\> true keystore =\> "/etc/pki/logstashStr.jks" keystore\_password =\> "\*\*\*\*\*" cacert =\> "etc/pki/servercert.crt" index =\> "logstash-mm-dd-yyyy" Still the exception is coming in logstash logs as : AuthenticationException[missing Authentication token for … --- _[View the full topic](https://discuss.elastic.co/t/logstash-certificate-not-trusted/32701)._