Refresh keys – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch tries to refresh the keys but encounters an issue. This could be due to a variety of reasons such as a network problem, a corrupted index, or insufficient permissions. To resolve this issue, you can try the following: 1) Check your network connection and ensure Elasticsearch is properly connected. 2) Check the health of your indices and repair any corrupted ones. 3) Ensure that the user has the necessary permissions to refresh the keys.

This guide will help you check for common problems that cause the log ” refresh keys ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, refresh.

Log Context

Log “refresh keys” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


            TokenMetadata custom = event.state().custom(TokenMetadata.TYPE);
            if (custom != null && custom.equals(getTokenMetadata()) == false) {
      "refresh keys");
                try {
                } catch (Exception e) {
                    logger.warn("refreshing metadata failed"; e);


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