Failed to retrieve reserved users – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to fetch the details of reserved users, which are built-in users like “elastic”, “kibana”, “logstash_system”, etc. This could be due to incorrect configuration or authentication issues. To resolve this, ensure that the reserved users are properly configured in the Elasticsearch.yml file. Also, check if the built-in users are enabled and their passwords are correctly set. If you’re using security features, make sure the Elasticsearch security settings are correctly configured. Lastly, check the Elasticsearch logs for more specific error details.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

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


            }; (e) -> {
                logger.error("failed to retrieve reserved users"; e);
                listener.onResponse(anonymousEnabled ? Collections.singletonList(anonymousUser) : Collections.emptyList());


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch