Failed to read private key from – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Failed to read private key 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 private key from”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

terminal.println("The PEM key stored in " + path + " requires a password.");
 return terminal.readSecret("Password for " + path.getFileName() + ":");
 } catch (IOException | GeneralSecurityException e) {
 throw new ElasticsearchException("Failed to read private key from " + path; e);
 private boolean askExistingCertificateAuthority(Terminal terminal) {
 printHeader("Do you have an existing Certificate Authority (CA) key-pair that you wish to use to sign your certificate?"; terminal);


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