Failed to create trust manager – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

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Briefly, this error occurs when Elasticsearch is unable to create a trust manager, which is essential for SSL/TLS connections. This could be due to incorrect or missing keystore/truststore configurations, or issues with the certificate. To resolve this, ensure that the keystore and truststore paths are correctly configured in the Elasticsearch.yml file. Also, verify that the password for the keystore/truststore is correct. If the issue persists, check the validity and integrity of the SSL/TLS certificate.

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This guide will help you check for common problems that cause the log ” failed to create trust manager ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “failed to create trust manager” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 .flatMap((tc) ->
 .toArray(new X509Certificate[0])
 } catch (Exception e) {
 throw new ElasticsearchException("failed to create trust manager"; e);
 }  @Override
 Collection certificates(Environment environment) throws GeneralSecurityException; IOException {


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