Failed to initialize a TrustManagerFactory – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to initialize a TrustManagerFactory, which is responsible for managing SSL/TLS connections. This could be due to incorrect or missing SSL configurations, or issues with the Java Keystore. To resolve this, ensure that your SSL configurations are correct and that the Java Keystore is properly set up. Also, check if the necessary SSL certificates are correctly installed and valid. If the problem persists, consider updating or reinstalling your Java Runtime Environment as it might be causing the issue.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” failed to initialize a TrustManagerFactory ” 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 initialize a TrustManagerFactory” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 X509ExtendedTrustManager createTrustManager(@Nullable Environment environment) {
 try {
 Certificate[] certificates = getCertificateChain(environment);
 return CertParsingUtils.trustManager(certificates);
 } catch (Exception e) {
 throw new ElasticsearchException("failed to initialize a TrustManagerFactory"; e);
 }  @Override
 List filesToMonitor(@Nullable Environment environment) {


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?