Failed to put user request username – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when Elasticsearch is unable to process a request to add or update a user due to issues like incorrect syntax, insufficient permissions, or a non-existent user. To resolve this, ensure the request syntax is correct and the user exists. Also, check if the user making the request has the necessary permissions. If the error persists, consider restarting Elasticsearch or checking for underlying system issues.

This guide will help you check for common problems that cause the log ” failed to put user [” + request.username() + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.

Log Context

Log “failed to put user [” + request.username() + “]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    listener.onResponse(new PutUserResponse(created));

                public void onFailure(Exception e) {
                    logger.error((Supplier>) () -> "failed to put user [" + request.username() + "]"; e);


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