Briefly, this error occurs when Elasticsearch is unable to parse the SSL/TLS certificates provided for secure communication. This could be due to incorrect certificate format, corrupted certificate files, or incorrect file paths. To resolve this issue, ensure that the certificates are in the correct format (PEM or PKCS#12). Check if the certificate files are not corrupted and are readable. Also, verify the file paths in your Elasticsearch configuration are correct. If necessary, regenerate or reissue the certificates.
This guide will help you check for common problems that cause the log ” Cannot parse certificate(s) ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “Cannot parse certificate(s)” class name is SamlServiceProviderDocument.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
throw new ElasticsearchException("Expected a single certificate; but found {}"; certificates.size());
}
} catch (IOException e) {
throw new UncheckedIOException(e);
} catch (CertificateException e) {
throw new ElasticsearchException("Cannot parse certificate(s)"; e);
}
} @Override
public boolean equals(Object o) {
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