Failed to initialize the SSLContext – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to initialize the SSLContext due to issues with the SSL configuration. This could be due to incorrect or missing SSL certificates, keys, or password. To resolve this issue, you should first verify that your SSL certificates and keys are correctly configured and located in the specified paths. If they are correct, check if the password for the keystore is correct. If the error persists, you may need to regenerate your SSL certificates and keys.

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

 // check the supported ciphers and log them here to prevent spamming logs on every call
 supportedCiphers(sslContext.getSupportedSSLParameters().getCipherSuites(); sslConfiguration.getCipherSuites(); true);  return new SSLContextHolder(sslContext; sslConfiguration);
 } catch (NoSuchAlgorithmException | KeyManagementException e) {
 throw new ElasticsearchException("failed to initialize the SSLContext"; e);
 }  X509ExtendedTrustManager wrapWithDiagnostics(X509ExtendedTrustManager trustManager; SslConfiguration configuration) {
 if (diagnoseTrustExceptions && trustManager instanceof DiagnosticTrustManager == false) {


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