Failed to modify role-mapping – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch is unable to update the role mapping due to issues like incorrect syntax, insufficient permissions, or a non-existent role. To resolve this, ensure that the syntax of the role mapping is correct and the role exists. Also, check if the user has the necessary permissions to modify role mappings. If the cluster is in a read-only mode, you may need to switch it to read-write mode. Lastly, ensure that the Elasticsearch version supports the role mapping feature.

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 “failed to modify role-mapping [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } else {
            try {
                inner.accept(request; ActionListener.wrap(r -> refreshRealms(listener; r); listener::onFailure));
            } catch (Exception e) {
                logger.error(new ParameterizedMessage("failed to modify role-mapping [{}]"; name); e);


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