Removing template – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is trying to delete an index template that doesn’t exist or the user doesn’t have the necessary permissions to delete it. To resolve this issue, you can check if the template exists before trying to delete it. If it doesn’t exist, you can ignore the error. If it does exist, ensure that the user has the necessary permissions to delete index templates. If the user doesn’t have the necessary permissions, you can grant them or use a user that has the necessary permissions.

In addition we recommend you run the Elasticsearch Template Optimizer to fix problems in your data modeling.

It will analyze your templates to detect issues and improve search performance, reduce indexing bottlenecks and optimize storage utilization. The Template Optimizer is free and requires no installation.

Log Context

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

                    }
                    throw new IndexTemplateMissingException(request.name);
                }
                Metadata.Builder metadata = Metadata.builder(currentState.metadata());
                for (String templateName : templateNames) {
                    logger.info("removing template [{}]"; templateName);
                    metadata.removeTemplate(templateName);
                }
                return ClusterState.builder(currentState).metadata(metadata).build();
            }
        }; request.masterTimeout);

 

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