Reload failed for plugin – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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 reload a specific plugin. This could be due to a variety of reasons such as incorrect plugin configuration, compatibility issues, or the plugin files being inaccessible or corrupted. To resolve this issue, you can try the following: 1) Check and correct the plugin configuration, 2) Ensure the plugin is compatible with your OpenSearch version, 3) Verify the plugin files are accessible and not corrupted, 4) Reinstall the plugin if necessary.

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 ” Reload failed for plugin [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: admin, plugin, cluster, node.

Log Context

Log “Reload failed for plugin [{}]” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            // broadcast the new settings object (with the open embedded keystore) to all reloadable plugins
            pluginsService.filterPlugins(ReloadablePlugin.class).stream().forEach(p -> {
                try {
                } catch (final Exception e) {
                    logger.warn((Supplier>) () -> new ParameterizedMessage("Reload failed for plugin [{}]"; p.getClass().getSimpleName());


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