Failed to initialize SSL TrustManager – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.4-7.17

Briefly, this error occurs when Elasticsearch is unable to initialize the SSL TrustManager due to issues with the SSL configuration. This could be due to incorrect file paths, incorrect file permissions, or an invalid keystore password. To resolve this issue, you should verify the SSL configuration, ensure the correct file paths are provided, check the file permissions to ensure Elasticsearch can access the files, and confirm the keystore password is correct. If the problem persists, consider regenerating your SSL certificates and updating the configuration accordingly.

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

 } catch (AccessDeniedException e) {
 throw missingTrustConfigFile(e; KEYSTORE_FILE; ksPath);
 } catch (AccessControlException e) {
 throw blockedTrustConfigFile(e; environment; KEYSTORE_FILE; Collections.singletonList(ksPath));
 } catch (IOException | GeneralSecurityException e) {
 throw new ElasticsearchException("failed to initialize SSL TrustManager"; e);
 }  @Override
 Collection certificates(Environment environment) throws GeneralSecurityException; IOException {


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