Failed to load settings from ” + source + ” – How to solve this Elasticsearch error

Opster Team

July-20, 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 load settings from ” + source + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: source and settings.

Log Context

Log “Failed to load settings from [” + source + “]”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

public Builder loadFromSource(String source; XContentType xContentType) {
 try (XContentParser parser = XContentFactory.xContent(xContentType)
 .createParser(NamedXContentRegistry.EMPTY; LoggingDeprecationHandler.INSTANCE; source)) {
 this.put(fromXContent(parser; true; true));
 } catch (Exception e) {
 throw new SettingsException("Failed to load settings from [" + source + "]"; e);
 return this;


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