Briefly, this error occurs when Elasticsearch is unable to read the SSL/TLS certificates from the specified path. This could be due to incorrect file path, insufficient permissions, or the certificate file being corrupted. To resolve this issue, you can verify the file path and ensure it’s correct. Check the permissions of the certificate file and make sure Elasticsearch has the necessary access. If the file is corrupted, you may need to generate a new certificate. Also, ensure the certificate is in a format that Elasticsearch can read, typically PEM.
This guide will help you check for common problems that cause the log ” Failed to read certificates from ” 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 read certificates from” class name is HttpCertificateCommand.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
default:
terminal.errorPrintln("Read [" + certificates.length + "] certificates from " + path + " but expected 1");
throw new UserException(ExitCodes.DATA_ERROR; path + ": Multiple certificates found");
}
} catch (CertificateException | IOException e) {
throw new ElasticsearchException("Failed to read certificates from " + path; e);
}
} private PrivateKey readPrivateKey(Path path; Terminal terminal) {
try {
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