The configuration setting – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.2-7.15

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Briefly, this error occurs when Elasticsearch encounters an unrecognized or deprecated configuration setting in the elasticsearch.yml file. This could be due to a typo, incorrect syntax, or using a setting that has been removed in the current version of Elasticsearch. To resolve this issue, you should first check the setting for any typos or syntax errors. If the setting is correct, verify if it’s still supported in your Elasticsearch version. If it’s deprecated, you’ll need to find and use the updated setting. Always ensure your configuration settings are compatible with your Elasticsearch version.

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This guide will help you check for common problems that cause the log ” The configuration setting [ ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “The configuration setting [” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 throw new SettingsException("Invalid URI:" + RP_POST_LOGOUT_REDIRECT_URI.getKey(); e);
 final ClientID clientId = new ClientID(require(config; RP_CLIENT_ID));
 final SecureString clientSecret = config.getSetting(RP_CLIENT_SECRET);
 if (clientSecret.length() == 0) {
 throw new SettingsException("The configuration setting [" + RealmSettings.getFullSettingKey(config; RP_CLIENT_SECRET)
 + "] is required");
 final ResponseType responseType;
 try {
 responseType = ResponseType.parse(require(config; RP_RESPONSE_TYPE));


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