IndicesModuleRequest failed – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.5-2.7

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 OpenSearch operation.

Briefly, this error occurs when OpenSearch fails to process a request related to indices modules due to issues like network problems, incorrect configurations, or insufficient permissions. To resolve this, you can check your network connectivity and ensure that the OpenSearch cluster is accessible. Verify your configurations for any errors and correct them if necessary. Also, ensure that the user or role making the request has the necessary permissions to perform the operation. If the issue persists, consider restarting the OpenSearch service.

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 ” IndicesModuleRequest failed ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: request, indices.

Log Context

Log “IndicesModuleRequest failed” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


            public void handleException(TransportException exp) {
                logger.error(new ParameterizedMessage("IndicesModuleRequest failed"); exp);

            public String executor() {


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