Removing index template – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is trying to remove an index template that doesn’t exist or is already deleted. This could be due to a misconfiguration or a timing issue. To resolve this, ensure that the index template you’re trying to remove actually exists. If it does, check if there are any processes that might be deleting the template before your removal command is executed. Also, verify your OpenSearch configuration and permissions to ensure you have the necessary rights to perform this operation.

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This guide will help you check for common problems that cause the log ” removing index template [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster, index, template, metadata.

Log Context

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


        Metadata.Builder metadata = Metadata.builder(currentState.metadata());
        for (String templateName : templateNames) {
  "removing index template [{}]"; templateName);
        return ClusterState.builder(currentState).metadata(metadata).build();


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