Is not set – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2-2

Briefly, this error occurs when Elasticsearch is not properly configured or installed in your system. It could also mean that the Elasticsearch service is not running. To resolve this issue, you can try the following: 1) Check if Elasticsearch is properly installed by running the command ‘elasticsearch’ in your terminal. 2) Ensure that the Elasticsearch service is running. You can do this by using the command ‘service elasticsearch status’ or ‘systemctl status elasticsearch’ depending on your operating system. 3) Check your Elasticsearch configuration file for any errors or missing parameters.

This guide will help you check for common problems that cause the log ” {} is not set. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cloud-aws, discovery-gce, plugin and plugins.

Log Context

Log “{} is not set.” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         return true;

    private static boolean checkProperty(String name; String value; ESLogger logger) {
        if (!Strings.hasText(value)) {
            logger.warn("{} is not set."; name);
            return false;
        return true;


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