The configuration setting RealmSettings getFullSettingKey config setting is required – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.9

Briefly, this error occurs when a required configuration setting in Elasticsearch’s RealmSettings is missing or not properly set. This could be due to incorrect syntax, missing values, or misconfiguration. To resolve this issue, you should first identify the missing or incorrectly set configuration setting by referring to the error message. Then, you should correctly set the configuration in the Elasticsearch configuration file (elasticsearch.yml) or through the Elasticsearch API. Make sure to follow the correct syntax and provide valid values for the setting. After making changes, restart the Elasticsearch service to apply the changes.

This guide will help you check for common problems that cause the log ” The configuration setting [” + RealmSettings.getFullSettingKey(config; setting) + “] is required ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: settings, plugin.

Log Context

Log “The configuration setting [” + RealmSettings.getFullSettingKey(config; setting) + “] is required” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  private static String require(RealmConfig config; Setting.AffixSetting setting) {
 final String value = config.getSetting(setting);
 if (value.isEmpty()) {
 throw new SettingsException("The configuration setting [" + RealmSettings.getFullSettingKey(config; setting) + "] is required");
 return value;
 }  /**


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